The macroevolutionary patterns that occurred once animals were able to survive outside of the water are associated with the development of airways to obtain oxygen form the air and also the development of extremities to move in terrestrial environments.
What is a macroevolutionary pattern?A macroevolutionary pattern makes reference to any adaptive change in the phenotype of a given taxonomic group in order to fits with new environmental conditions such as occurred when animals moved from aquatic environments to terrestrial conditions.
This type of evolutionary pattern (macroevolutionary pattern) is well known to be associated with the presence of mutations in developmental genes that produce changes in the morphological features of an individual which are then selected by natural selection.
Therefore, with this data, we can see that macroevolutionary patterns are associated with changes at a high scale in the phenotype to fit certain environmental conditions.
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name the highlighted muscle, which originates at the medial clavicle and the manubrium of the sternum.
The muscle that is highlighted is the sternocleidomastoid, which arises from the sternum's manubrium and medial clavicle.
Describe the medial clavicle.The sternoclavicular joint is formed by the clavicle's medial articulation with the sternum's manubrium (SC joint). An intra-articular disc is located between the clavicle and the sternum in this joint, which is encased in a fibrous capsule.
To keep the scapula in place and allow the arm to hang freely, the medial clavicle acts as a strut. The location of it is directly above the first rib. Its rounded medial end, also referred to as the sternal end, articulates with the manubrium of the sternum at the sternoclavicular joint (breastbone).
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What is electrolyte balance in the body?
The electrolytes present in our body should be in the right concentration. This is said to be electrolyte balance.
Why does an electrolyte imbalance occur?
Electrolyte imbalance is caused when the body fluids are present in large amount. When we sweat or vomit more, it can be due to the lower level of some electrolytes. So, it is necessary that the electrolytes should be in proper proportion.
Electrolytes plays a very important role in our body. It helps in regulation of fluids present in blood and blood plasma, normalizes the pH of blood, allows the contraction of muscles and so on. For all these necessary roles to occur, our electrolytes should be in proper concentration. This is called electrolyte balance.
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Cell grown in a petri dih tend to divide until they form a thin layer covering the bottom of the dih. If cell are removed from the middle of the dih, the cell bordering the open pace will begin dividing until they have filled the empty pace. What doe thi experiment how?
Cell grown in a petri dih tend to divide until they form a thin layer covering the bottom of the dih by turning the regulators on and off, you can regulate cell division and growth.
Cell division and growth are managed and controlled by signal proteins. For instance, mitogens help remove undesirable restrictions that would otherwise prevent the progression of the cell cycle. Growth factors promote cell growth by producing proteins. Apoptosis is also inhibited by a number of survival factors. Cell division and growth can be turned on or off depending on these three factors. Life requires the process of mitosis to occur. A cell divides into two identical daughter cells after replicating all of its parts, including its chromosomes. Mitosis is a crucial process, and certain genes carefully control each stage.
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Over a long period of time, helpful variations in a species replace the unfavorable ones. This change can lead to.
Over a long period of time, helpful variations in a species replace the unfavorable ones. This change can lead to. Fossilization .
Fossilization is the system of an animal or plant becoming preserved in a difficult, petrified shape. Fossilization frequently outcomes in the affect of an organism being left in a rock. while a leaf or an animal skeleton will become a fossil, it's fossilization.
Fossils are the remains or traces of historic lifestyles which have been preserved via herbal techniques. Examples of fossil consist of shells, bones, stone imprints of animals or microbes, exoskeletons, objects preserved in amber, petrified wood, coal, hair, oil, and DNA remnants. There are five sorts of fossils: frame Fossils.
Fossils supply us a useful insight into the history of existence on the planet. they are able to train us where existence and human beings came from, show us how the Earth and our surroundings have changed through geological time, and the way continents, now broadly separated, had been as soon as connected.
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Which genotypes are possible from a cross of parents with the genotypes dd x dd?.
Dwarf dd genotypes are those that can emerge through parent crosses between individuals of the dd X dd genotype.
Genotypes are essentially the genetic part of an organism that makes up its personality.
There are three types of genotypes: heterozygous, homozygous dominant, and homozygous recessive.
To reflect the character "height," consider mating parents with the genotypes homozygous tall TT and homozygous dwarf TT.
Genotypes Tt, Tt, Tt, and Tt will be heterozygous in the offspring.
In this case, the investigation focuses on the genotypes that might be produced by a cross between parents that have the dd X dd genotype.
Due to the homozygous nature of the parents, the genotypes, or dd X dd, would be dwarf.
Homozygous traits typically lead to homozygous genotypes unless one parent is heterozygous for the character.
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Define oligopotent, multipotent, totipotent, and pluripotent cells are
a. An oligopotent cell can simply be defined as that special stem cell which has the ability to form two or more cell types within a particular tissue tissue.
b. A multipotent cell is defined as the cells which possess the feature renew itself by means of cell division which forms a specialized cell in a tissue.c. A totipotent cell is a cell which produces a fertile adultd. Pluripotent cell refers to the cell which can form other cells and tissues.How do oligopotent cells form cells in a tissue?It follows that these oligopotent cells are produced from the mesoderm which usually, frequently and most of the time differentiate into other cells and tissues. They have the ability to form specialized cells in a specific tissue simply because of their dividing capacity
So therefore, it can be deduced from the explanation above that an oligopotent cell develops to form other specialized cells in a tissue.
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If a dog cell has 72 chromosomes, how many chromosomes will each daughter cell have?
Answer:
1. Two daughter cells will be produced. The cell division process known as mitosis (single cell cycle) always produces two identical daughter cells, irrespective of the number of chromosomes.
2. 72 chromosomes. As stated above, the daughter cells are identical to the parent cells and have the same amount of chromosomes.
Explanation:
Not sure if this helps but I tried :)
hat does the intrinsic growth rate of a species measure? How does it vary among species? (consider r/k selection,etc)
The intrinsic growth rate of a species measures the max potential for growth under ideal conditions for a species. The r-selected species show high growth because they can give rise to a large number of offspring at once and the k-selected species have slow growth as they reproduce fewer species.
The r-selected species are the organisms that involve all their potential and energy in reproducing. They give birth to a large number of species at once and hence provide very less or no parental care.
The k-selected species do not give all the energy in reproducing and hence they offer parental care to the offspring. Thus, these offspring live longer than the offspring of the r-selected species.
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What is the mRNA code formed from the 5'-3' strand of DNA with the code AAA GCA TTG AGC GGC?
a
AAA GCA TTG AGC GGC
b
UUU CGT UUC TCG GCG
c
GCC GCU CAA UGC UUU
d
AAA GCT AAC TGC CCG
e
UUU CGU AAC UCG CCG
The mRNA code formed from the 5'-3' strand of DNA with the code AAA GCA TTG AGC GGC is as follows: UUU CGU AAC UCG CCG (option E).
What is transcription?Transcription is the process by which mRNA is synthesized from DNA molecule in the nucleus of the cell.
The DNA molecule is made up of sub-units called nucleotides, which are four in number as follows:
Adenine (A)Guanine (G)Cytosine (C)Thymine (T)However, during the process of transcription, the Adenine base is decoded into Uracil (U), which is only found in mRNA.
This suggests that the mRNA sequence that will be transcribed from the above-mentioned DNA sequence is as follows: UUU CGU AAC UCG CCG.
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For the red onion skin experiment, in what cellular structure is red onion pigment stored and you were observing shrinkage?.
Anthocyanins is the red pigment present in leaves, petals and fruit of onion.
What are anthocyanins?Plant-based pigments called anthocyanins are thought to have health advantages. They are part of a group of substances called flavonoids, which have antioxidant properties. They do this by combating free radicals, which are unstable chemicals that harm cells and raise the chance of developing certain diseases. Water-soluble pigments called anthocyanins not only give some plants their colour but also shield them from harsh temperatures.
Although it is obvious that anthocyanin-rich foods contribute to a healthy diet, it is still unknown if they can prevent or treat any illnesses. It is not clear how much anthocyanins must be consumed to be taken into account, even in cases where there is proof of their advantages, such as the decreased risk of heart disease.
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The red pigment found in onion leaves, petals, and fruit is called anthocyanin.
Describe anthocyanins?Anthocyanins, a type of plant pigment, are known to have positive health effects. They belong to the class of compounds known as flavonoids, which have antioxidant effects. They accomplish this by battling free radicals, unstable molecules that damage cells and increase the risk of contracting specific diseases. Some plants get their color from water-soluble pigments called anthocyanins, which also protect them from extreme temperatures.
What effects do anthocyanins have on the body?Anthocyanins have actions that are anti-obesity, anti-inflammatory, anti-microbial, anti-cancer, anti-diabetic, and prevent cardiovascular disorders. Anthocyanins produced from food plants are therefore possible components for pharmaceuticals.
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Benthic organisms that live on or attached to rocky areas and firm sediments are collectively called ______, whereas animals that live buried in the substrate and are associated with soft sediments, such as mud or sand, are collectively called ______.
Benthic organisms that live on or attached to rocky areas and firm sediments are collectively called epifauna, whereas animals that live buried in the substrate and are associated with soft sediments, such as mud or sand, are collectively called infauna.
Benthic is a term that refers to anything that belong to the bottom like that of the sea, ocean, lake, etc. There are various species of plants and animals that reside in the benthic region of the waterbodies. These organisms are termed as benthos.
Soft sediments are the structures formed due to the deformation of the solid particles like rocks. These include mud, silt, and sand. The soft sediments are the benthic region of the waterbodies where various organism reside.
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a eukaryotic gene contains three introns and four exons. the first intron becomes mutated such that the spliceosome cannot recognize the boundaries between the intron and the exon (the splice sites). this intron contains a stop codon that is in frame with the first exon. what will occur when this gene is expressed?
When it occurs, this gene is expressed then splicing mutation may disrupt already-existing splice sites, produce new ones, or activate cryptic ones.
The point mutation at the cis consensus sequences causes incorrect exon and intron recognition in messenger RNA and causes the creation of an aberrant transcript of the altered gene.
It can happen in both introns and exons. They may also change the messenger RNA's secondary structure, which would inhibit the binding of the spliceosome components, or they may affect the binding of splicing enhancers and silencers. Exon/exon fragment skipping caused by these mutations often occurs during pre-mRNA splicing. The shortened protein will be produced if the ensuing deletion is an in-frame one.
A premature stop codon (PTC) can be added and a truncated protein can be created when the deletion causes the open reading frame to shift. However, a protective process known as nonsense-mediated decay accelerates mRNA degradation when the PTC is present in the transcript (NMD). Similar to gene deletion or nonsense mutation, the faulty messenger RNA is degraded to stop the production of abnormal proteins.
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you perform a cross between red ladybugs and white ladybugs and see all the offspring produced are pink ladybugs. what type of inheritance pattern occurred?
Cross the red ladybug with the white ladybug to make sure all offspring are pink ladybugs. types of inheritance patterns have emerged as incomplete dominance
Incomplete dominance results from matings in which each parent's contribution is genetically unique and which produces offspring that are phenotypically intermediate. Incomplete dominance is also called as the semi-dominance and the partial dominance. Mendel described dominance, but not imperfect dominance. Imperfect dominance is a form of gene interaction in which both alleles of a gene are partially expressed at one locus, often resulting in intermediate or dissimilar phenotypes. Also known as partial dominance. For example, in roses, the red allele is dominant over the white allele.
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cyanide binds with at least one protein complex involved in producing atp. if a cell is exposed to cyanide, most of the bound cyanide is likely to be localized within which of the following organelles?
The correct answer is option (A.) mitochondria
If a cell is exposed to cyanide, most of the cyanide will be found within the mitochondria.
Heme-containing proteins include Fe3+, which cyanide binds to. As a result, the electron transport chain's terminal cytochrome complex IV is inhibited. Cyanide's blockade of complex IV depletes ATP, which leads to cell death. Cytochrome a3 that has been reduced cannot be reoxidized by oxygen. As a result, both cellular respiration and ATP generation are hindered, effectively depriving the cells, tissues, and ultimately the entire body of oxygen. Reduced oxygen saturation and metabolic acidosis develop as a result of hypoxia. The severity of cyanide poisoning is indicated by the degree of lactic acidosis. Plasma lactate is a sign of cyanide poisoning in a collapsed person. Up to 98% of the cyanide in the bloodstream in cases of severe cyanide poisoning is securely attached to red blood cells.
Myocardial depression and a decrease in cardiac output are the secondary responses. The development of VF and cardiovascular collapse follows bradycardia, hypotension, and cardiac arrhythmia.
The autonomic shock brought on by the production of biogenic amines plays a part in severe cyanide poisoning. The observed shock-like state is not due to cytochrome oxidase inhibition, but rather to coronary artery vasoconstriction, which increases central venous pressure. Rhodanese in the liver converts CN to thiocyanate, which is eliminated in the urine.
The complete question is:
Cyanide binds to at least one molecule involved in producing ATP. If a cell is exposed to cyanide, most of the cyanide will be found within the
a. mitochondria.
b. ribosomes.
c. peroxisomes.
d. Lysosomes.
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If pacific field male crickets in hawaii attract females by rubbing their wings together to sing, why is it that in some places up to 90% of the males no longer sing? how could this have evolved?.
On three of Hawaii's islands, including Kauai and Oahu, the fly Ormia ochracea, a new North American predator, was posing a threat to the crickets. This fly is drawn to the singing of the male crickets, lays her eggs on the cricket's body, and the hatched fly larvae consume the host, killing it.
Define Crickets mating.For the crickets, the founder effect has numerous effects, especially on their mating system. A male cricket's "singing"—the chirping noise it makes by rubbing its wings together—usually attracts female crickets. The wings' serrated surface allows for this unusually powerful call, however on the Hawaiian islands of Kauai and Oahu, some males have abnormalities that cause the serration to disappear; as a result, they are unable to sing.
Females in Australia, the population of origin, are quite picky when it comes to mate acceptance and highly favor singing males. It turns out that female acceptance of men is a hereditary feature in and of itself. by conducting mating tests on females from various groups on the mainland and islands.
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What would be the result of a cytosine base being substituted for a thymine base in a dna segment during dna replication?.
The sequence could code for the incorrect amino acid during translation if a cytosine base is changed to a thymine base in a DNA segment during DNA replication. Mutation is the term used to describe a change in the DNA sequence.
What is cytosine?Nucleotides are typically one of the first concepts covered while learning about DNA and RNA replication. One of the five nitrogenous bases that make up the building blocks of nucleic acids, along with adenine, thymine, guanine, and uracil, is cytosine. Cytosine is one of three pyrimidine bases, the other two being thymine and uracil. It is also known by its IUPAC name, 6-amino-1H-pyrimidine-2-one. Because pyrimidine bases only have one ring in their structures, they are smaller than their purine counterparts. Purines, on the other hand, have two rings. Pyrimidines can bond with purines and thus maintain a constant size throughout the double-stranded helices of DNA and RNA thanks to this size difference.
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If a cytosine base in a DNA segment is changed to a thymine base during DNA replication, the sequence might translate as the incorrect amino acid. The term "mutation" refers to a change in the DNA sequence.
What does cytosine do?When learning about DNA and RNA replication, nucleotides are frequently one of the first concepts covered. Cytosine, along with adenine, thymine, guanine, and uracil, is one of the five nitrogenous bases that make up the building blocks of nucleic acids.
One of three pyrimidine bases, along with thymine and uracil, is cytosine. Additionally, it is referred to by its IUPAC name, 6-amino-1H-pyrimidine-2-one. Pyrimidine bases are smaller than purine bases because their structures only contain one ring. On the other hand, purines have two rings. Due to this size disparity, pyrimidines can bond with purines and keep their size constant throughout the double-stranded helices of DNA and RNA.
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Scientists study upper atmospheric conditions to __________.
Answer:
Predict weather conditions and climate.
Step-by-step:
Applying science and technology to forecast the weather is known as weather forecasting. It involves determining the atmosphere's state at a specific location and moment in time.
Hope this helps! :)
Scientists study upper atmospheric conditions to understand various aspects of Earth's atmosphere and its interactions with the environment, which is option A. So the correct answer is option A.
The upper atmosphere plays a crucial role in climate and weather patterns. Studying upper atmospheric conditions helps scientists understand atmospheric circulation, temperature variations, wind patterns, and the transport of pollutants and greenhouse gases. This knowledge contributes to climate modeling, weather forecasting, and understanding long-term climate trends. So the correct answer is option A.
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Scientists study upper atmospheric conditions to __________.
A.understand various aspects of Earth's atmosphere
B.Not to know various aspects of Earth's atmosphere
if an e. coli cell experiences high internal concentration of glutamine and low concentration of alpha keto-glutarate, what happens to the status of the enzyme glutamine synthetase?
The Krebs cycle, which regulates the organism's overall pace of the citric acid cycle, is keyed by the chemical alpha-ketoglutarate (AKG).
Explain about the Krebs cycle?Alpha-ketoglutarate, often known as AKG, is a nutrient that cells utilize to develop and mend after wounds and other types of trauma. It is particularly crucial for the recovery of muscle tissue. AKG intravenously avoided a reduction in protein synthesis in the muscles of individuals recovering from surgery, according to a controlled study.
Alpha-ketoglutarate is occasionally administered intravenously (IV) during heart surgery to prevent damage to the heart from poor blood flow and to stop muscle breakdown following trauma or surgery.
In 2014, researchers revealed that the chemical, AKG, might increase the lifespan of the microscopic Caenorhabditis elegans worms by more than 50%.
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What is the primary biomolecule that cells use for energy?
Answer:
Explanation: Adenosine triphosphate (ATP), energy-carrying molecule found in the cells of all living things. ATP captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes.
the molecule that copies or transcribe the dna in the nucleus of eukaryotic cells, which contains the information for protein synthesis is, group of answer choices
Genes use transcription and translation, two processes, to make proteins. The cell nucleus contains a substance called RNA (ribonucleic acid).
What do cells do, and what are they?Cellular are the important building blocks of all living creatures. A human body has many billions of cells. They provide the body with structure, take in nutrients from food, convert that food into energy, and carry out certain functions.
What's a cell's structure?The three parts that constitute a cell are the cytoplasm, the nuclear, and the outer layer. The cytoplasm contains millions of tiny, distinct components known as organelles and intricate networks of microscopic fibers.
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when using the hill equation:a.it is possible to observe positive cooperativity.b.it is possible to observe negative cooperativity.c.it is possible to observe both positive, negative and no cooperativity.d.it will never be 1 for a multisubunit protein.e.it cannot be applied to noncooperative binding.
"It is possible to observe negative cooperativity" when utilizing the hill equation.
What exactly is negative cooperativity?Negative cooperativity occurs when one or more molecules of a ligand attach to a multimeric receptor, making subsequent ligand molecules more difficult to bind. Negative cooperativity can make a multimeric receptor's response more graded than it would otherwise be. When the binding of a first ligand or substrate molecule lowers the rate of subsequent binding, this is referred to as negative cooperativity. This term is applicable not just to ligand-receptor interaction, but also whenever two or more molecules undergo two successive binding events. When the binding of a first ligand or substrate molecule lowers the rate of subsequent binding, this is referred to as negative cooperativity.
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Selecting from the following, which tooth and surface are most likely to exhibit pit and fissure carries?
- 18, facial
- 19, lingual
- 4 buccal
- 15, buccal
- 9 incisal
The tooth and surface most likely to have pits and fissures is, 9 incisa. Correct answer: E.
Why the tooth and surface most likely to have pits and fissures is 9 incisa?The tooth and surface most likely to have pits and fissures is the incisor. This is because the incisor is the tooth that is most exposed to the outside world and therefore is more likely to come into contact with acidic or sugary substances that can cause pits and fissures.
Incisors are the eightSPJ4 teeth in the front of the mouth that are used for biting and cutting food. The incisors are the four teeth on either side of the two front teeth (central incisors).
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What are the components of blood?
The components of human blood are:
The components of human blood are the blood cells and plasma. The blood cells are of types such as RBCs, WBCs, and platelets. The plasma consists of the clotting factor and other proteins.
What is blood?The human blood has a fluid part called plasma and a cellular part. Red blood cells (RBC), white blood cells (WBC), and platelets make up the cellular portion of the blood.
The plasma component of the blood consists of clotting factors such as fibrinogen and other proteins like albumin. RBC carries the oxygen that is bound to haemoglobin. WBC protects the body from pathogens.
Hence, the components are plasma, RBC, WBC, and platelets.
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When you look at the structure of dna, what are the reasons dna can be collected at the interface of both solutions?.
The reason why DNA is collected at the interface of both the solutions( isopropyl alcohol or ethanol and strawberry mixture) is that the DNA precipitates in the presence of ethanol or isopropyl alcohol. DNA tends to cluster together when it exits the solution, making it visible. When the stirrer or transfer pipet is spun at the junction of the two layers, the long strands of DNA will encircle it.
Deoxyribonucleic acid (DNA) extraction, to put it simply, is the process of removing DNA from the cells or viruses that normally contain it.
DNA extraction is frequently the first step in many diagnostic procedures used to identify environmental viruses and bacteria, as well as to diagnose illnesses and hereditary diseases.
The below ingredients are required in order to perform a DNA extraction experiment:
60 ml 2-propanol1.5g Sodium Chloride(NaCl)8 ml Dawn dishwashing liquid3 strawberries20 drops per test of 2 M Sulfuric acid ([tex]H_{2} SO_{4}[/tex] )40 drops per test of the Dische reagentA detergent (similar to dishwashing liquid) and salt are used to dissolve the cells during DNA extraction in the lab, and alcohol is used to precipitate the DNA. With a detergent and a lot of salt, soft fruit like strawberries and kiwis can have their cells lysed, liberating DNA. By gently stirring the interface with a glass rod after adding alcohol to the point where it creates a boundary on top of the lysate, you can precipitate DNA.
After then, DNA will be released as a transparent mass or fiber. Other treatments (enzyme destruction of the cell wall or mechanical rupture) are required in order to release the DNA from other cells, such as bacterial or fungal cells, as well as many other plant cells, which are not as easily lysed open.
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When cells in the artery wall take up ______ in an uncontrolled fashion, they become_____ cells.
When cells in the artery wall take up lipid in an uncontrolled fashion, they become droplets and grow to accomodate cells.
What are cells?The smallest component of all living things, including cells and tissues in the body, that is capable of independent living. The cell membrane, nucleus, and cytoplasm make up a cell's three basic structural components. In addition to enclosing the cell, the cell membrane also regulates the molecules that enter and exit the cell.All living things are composed primarily of cells. Trillions of cells make up the human body. In addition to absorbing nutrients from meals and converting those nutrients into energy, they also provide the body structure and perform certain tasks.
There are two different types of cells: eukaryotic cells, which have nuclei, and prokaryotic cells, which lack nuclei but still include nucleoid regions. Prokaryotes are organisms with only one cell,In contrast, eukaryotes can be single cells or multicellular.
The cell, discovered by Robert Hooke in 1665, has a long and fascinating history that ultimately paved the way for many of today's scientific breakthroughs
Within the fat cell, lipid is stored in a droplet. This droplet can enlarge, and the cell membrane will grow to accomodate its swollen contents.
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effector molecule binding changes the behavior of enzymes by altering the equilibrium between the tense (t) state and the relaxed (r) state. effectors are classified as either homotropic or heterotropic. match each description with homotropic effectors, heterotropic effectors, or both. some statements may not describe either type of effector. you are currently in a sorting module. turn off browse mode or quick nav, tab to items, space or enter to pick up, tab to move, space or enter to drop. homotropic effector heterotropic effector both'
Effector molecule binding changes the behavior of enzymes by altering the equilibrium between the disturbing (t) kingdom and the comfortable (r) country. effectors are labeled as either homotropic or heterotropic. in shape every description with homotropic effectors.
Homotropic effector-
Both -
The phrase
Is relevant and can be applied to homotropic effector molecules since the heterotropic effector molecules have the possibility and affinity to change the sigmoidal curve to a more potential hyperbolic curve contingent upon the allosteric effector being positive or negative modulator.
The expression isn't relevant for both homotropic and heterotrophic effectors since the two of them can tie to the allosteric site of allosteric enzymatic compounds.
The phrase is significant and can be applied to both homotropic and heterotropic effectors.
The expression is significant and applied for homotropic effectors just as when substrate molecules tie to the allosteric site of an enzyme then it is regarded as a homotropic effector. The heterotropic effectors are effectors apart from substrate molecules.
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Disclaimer:- Your question is incomplete, please see below for the complete question.
Effector molecule binding changes the behavior of enzymes by altering the equilibrium between the tense (t) state and the relaxed (r) state. effectors are classified as either homotropic or heterotropic. match each description with homotropic effectors, heterotropic effectors, or both. some statements may not describe either type of effector. you are currently in a sorting module. turn off browse mode or quick nav, tab to items, space or enter to pick up, tab to move, space or enter to drop.
A. homotropic effector
B. heterotropic effect
C. or both'
Which organelles are found in plant cells but not in animal cells?
O cell membrane, vacuole
O cell wall, chloroplasts
O cell wall, vacuole
O cell membrane, chloroplasts
Answer:
cell wall chloroplasts
Cell walls and chloroplast are the organelles that are found in plant cells but not in animal cells A hard structure situated outside the cell membrane is called a cell wall and it is present in plant cells.
The cell wall supports and shields the cell's structure. Cell walls do not exist in animal cells.
Chloroplasts, specialized organelles involved in photosynthesis, are another component of plant cells. The pigment chlorophyll, which is found in chloroplasts, absorbs light energy and uses it to synthesize glucose.
The photosynthesis process cannot be performed by animal cells because they lack chloroplasts.
Hence, the chloroplasts and cell walls are the organelles that are present in plant cells but not in animal cells.
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What is the correct term for rising water vapor meeting colder air and turning back into water droplets?.
The meeting of water vapor with cooler air and turning it back into water droplets is called condensation.
What is condensation?
Condensation is the process by which the state changes from gas to liquid. Condensation is the reverse of the process of evaporation or vaporization. Condensation occurs when vapor is cooled to become a liquid. But it can also occur when a vapor is compressed (ie the pressure is increased) to a liquid or undergoes a combination of cooling and compression. The liquid that has condensed from the vapor is called condensate.
The condensation process occurs when water vapor in the air passes through a surface that is colder than the dew point of the water vapor. Air temperature plays an important role in the condensation process, for example in the event of the formation of dew in the morning.
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Classify each of the characteristics below as pertaining to gene regulation in either prokaryotes or eukaryotes.
Genes are located on one chromosome.
Genes are located on different chromosomes.
Some genes are organized into operons, and mRNA transcripts often specify more than one protein.
Transcription and translation occur in the cytoplasm.
Transcription occurs in the nucleus, whereas translation occurs in the cytoplasm.
mRNA splicing must occur to remove introns.
Gene regulation in prokaryotes: One chromosome contains all the genes. Operons are collections of genes, and many mRNA transcripts indicate many proteins. Transcription and translation occur in the cytoplasm.
Gene regulation in eukaryotes: Different chromosomes contain different genes. Introns must be cut out through mRNA splicing. Translation takes place in the cytoplasm, whereas transcription takes place in the nucleus.
What is gene regulation?Only some of a cell's genes are translated and expressed (transcribed) by the cell. By activating or deactivating the expression of the proper genes, cells respond to environmental cues. Even though all cells in the body (with a few exceptions) have the same genome, cells in different tissues and organs develop, or become specialized, by producing diverse sets of proteins in multicellular animals. These alterations in gene expression, or differences in gene expression between cells, are often controlled at the transcriptional level.
Gene expression is regulated at three main levels:
Transcriptional regulation,Translational management,Post-translational regulation.To know more about gene regulation, visit:
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looking at your results of the ames test using bacteriological agar medium plates lacking the amino acid histidine, you find that there are many colonies growing on the agar. how do you interpret this result?
Interpret this result is the chemical being tested is mutagenic.
What is mutagenic?A mutation-causing agent (a change in the DNA of a cell). Mutagens can damage cells and result in diseases like cancer thanks to the DNA mutations they produce. Radiation from x-rays, ultraviolet light, and certain compounds are a few examples of mutagens.
In the field of genetics, a mutagen is a physical or chemical agent that permanently modifies genetic material, typically DNA, in an organism and raises the frequency of mutations above the background level of natural occurrence.
Physical, chemical, or biological mutagens can all be mutagenic agents. Mutagenicity is the property of a chemical that permits the induction of mutations or changes in DNA base pairs.
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