The option (b) is correct- they open channels to allow signaling molecules to enter pancreatic cells.
What is insulin ?
The hormone insulin lowers the blood level of glucose, a type of sugar. The pancreatic beta cells create and release glucose when the blood glucose level rises, such as after eating.
What is glucose ?
The major sugar present in your blood is known as blood sugar or glucose. All of your body's cells receive glucose from your blood to utilize as fuel. Blood sugar levels that are too high are a symptom of diabetes.
Therefore, option (b) is correct- they open channels to allow signaling molecules to enter pancreatic cells.
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This is a microscopic image of an animal tissue.
0800,00
Which type of animal tissue is shown in the image?
OA. Epithelial tissue
B. Muscular tissue
C. Nervous tissue
O D. Connective tissue
There is a microscopic image of animal tissue. The type of animal tissue shown in the image is epithelial tissue. The correct option is A.
What is epithelial tissue?The surface of the body is covered with epithelial tissue, which also coats internal organs and cavities and gives rise to glands.
In epithelial tissue, the cells frequently follow a predictable pattern and have uniform shapes and sizes. The tissue in the photograph resembles epithelial tissue in that it looks to be made up of cells that are layered, uniformly shaped, sized, and arranged in a single layer.
Therefore, the correct option is A. Epithelial tissue.
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The question is incomplete. Your most probably complete question is given below: the image is added.
in a particular environment, there are no obvious fitness differences between individual with dark hair and those with light hair. the term that best describes this situation is random mating random selection neutral variation random variation natural selection
In a particular environment, if there are no obvious fitness differences between individuals with dark hair and those with light hair, the term that best describes this situation is neutral variation.
Neutral variation refers to differences in traits that do not affect an individual's fitness, or its ability to survive and reproduce in a particular environment. In the case of the individuals with dark and light hair, if there are no differences in their fitness, then the differences in their hair color are likely due to neutral variation. This means that the differences in hair color are not influenced by natural selection and do not give an advantage or disadvantage to the individuals carrying them. Random mating, random selection, and random variation all refer to processes that are influenced by chance rather than by any inherent advantage or disadvantage of a particular trait. Natural selection, on the other hand, is the process by which traits that are beneficial for survival and reproduction are passed on to future generations, while traits that are detrimental are less likely to be passed on.
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Explain why stains would be removed faster with detergent in water at 35degrees celsius rather thab at 15 degrees celsius
Answer: hm
Explanation: and hm
A break in a blood vessel occurs and damaged cells release chemicals to begin the process of blood clotting. As clotting gets under way, signals are sent by cells for each step to release more chemicals that accelerate the process. Eventually the wall is patched and bleeding is stopped. While the cells are signalling, what type of feedback is occuring?
a.This process is not controlled through feedback.
b.Positive and negative feedback are occuring together.
c.Positive
d.Negative
Consequently, the right answer is (c) - Positive feedback
Damaged cells produce chemicals when blood vessels rupture, which starts the blood clotting process. Platelets then arrive at the wound site and begin to release chemicals that draw other platelets to the damaged area. This kind of binding is cooperative, thus one molecule indicates the release of another molecule. Clot formation is the end consequence, and as a result, bleeding is stopped. The cooperative binding is a form of positive feedback because each person contributes more.
Regarding the bad choices
a. Blood clotting involves positive reinforcement.
b. The only positive feedback loop that causes blood coagulation.
d. Blood clotting is not a function of it.
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Keratins, neurofilaments, and vimentins are all categories of intermediate filaments. Which of the following properties below is not true of these types of intermediate filaments?
(a) They strengthen cells against mechanical stress.
(b) Dimers associate by noncovalent bonding to form a tetramer.
(c) They are found in the cytoplasm.
(d) Phosphorylation causes disassembly during every mitotic cycle.
Keratins, neurofilaments, and vimentins are cytoplasmic intermediate filaments that are stable once formed. The nuclear intermediate filaments are disassembled and reformed during mitosis; this process is regulated by phosphorylation.
Phosphorylation is the connection of a phosphate group to a molecule or an ion in chemistry. This process, as well as its inverse, dephosphorylation, is common in biology and may be influenced by natural selection. Protein phosphorylation frequently activates a large number of enzymes. The inclusion of a phosphoryl (PO3) group in a chemical compound is known as phosphorylation. This reaction is critical in biological systems for the storage and transport of free energy via energy carrier molecules.
As a result, intermediate filaments can be found in incredibly durable structures such as hair, scales, and fingernails. Intermediate filaments' primary function is to promote cell cohesion and inhibit the acute fracture of epithelial cell sheets under tension.
Intermediate filaments are made up of smaller strands shaped like rods. Eight rods are aligned in a delayed arrangement with another eight rods, and these elements all twist together to form an intermediate filament's rope-like conformation.
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How would the life cycle of an animal RNA virus be affected if its Viral RNA polymerase enzymes were completely destroyed in the host cell's cytoplasm ?
Answer:
If the viral RNA polymerase enzymes were completely destroyed in the host cell's cytoplasm, it would severely affect the life cycle of an animal RNA virus. The viral RNA polymerase is an essential enzyme that is responsible for synthesizing viral RNA from a viral DNA template. Without this enzyme, the virus would be unable to replicate and produce new viral particles. This would ultimately halt the virus's life cycle and prevent it from spreading to other host cells.
A crucial enzyme that produces viral RNA from a viral DNA template is called viral RNA polymerase. The virus wouldn't be able to reproduce and create new viral particles without this enzyme.
What is RNA virus?An animal RNA virus's ability to replicate itself would be greatly hampered if the viral RNA polymerase enzymes were fully eliminated from the cytoplasm of the host cell.
To maintain their survival, RNA viruses take use of every known mechanism of genetic diversity.
High mutation rates, high yields, and quick replication timeframes are distinguishing characteristics of RNA virus replication. Because of this, RNA viruses reproduce as intricate and dynamic mutant swarms known as viral quasispecies.
Therefore, in the end, this would stop the virus's cycle and stop it from spreading to further host cells.
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The letters in the diagram below represent genes on a particular chromosome.
Gene B contains the code for an enzyme that cannot be synthesized unless gene A is also active. Which statement best explains why this can occur?
(1) A hereditary trait can be determined by more than one gene.
(2) Genes are made up of double-stranded segments of DNA.
(3) All the genes on a chromosome act to produce a single trait.
(4) The first gene on each chromosome controls all the other genes on the chromosome.
More than one gene may contribute to a genetic trait.
Polygenic Character
A trait that is influenced by two or more genes, such as height or skin tone, is referred to as a polygenic trait. Polygenic traits do not follow the laws of Mendelian inheritance since several genes are involved.
Multifactorial traits are many polygenic qualities that are additionally influenced by the environment.
Multigenic trait We've discovered that the genetic component of many of the most significant health conditions of our time, such as cancer, heart disease, and diabetes, is caused by the interactions of many different genes as we've gotten better at identifying regions of the human genome that are associated with disease and at analyzing complex genomic data. Thus, polygenic, or having numerous genes. Studying these problems has been exciting since it has revealed how much may be done to improve human health by using the methods currently available to forecast the hazards associated with polygenic features.
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PLEASE HELP BY TONIGHT: The ability to taste phenylthiocarbamide (PTC) is controlled in humans by a single dominant allele (T). A woman who is a nontaster married a man and they had three children, two boy tasters and a girl nontaster. All the grandparents were tasters. Create a pedigree of this family of this trait. Solid symbols should signify nontasters. Where possible, indicate whether the tasters are TT or Tt.
Answer:
T (TT)
|
Tt
/ \
Tt tt
/
TT Tt
Explanation:
In this pedigree, the solid symbols (circles or squares) represent nontasters (tt), and the open symbols (circles or squares with a horizontal line) represent tasters (TT or Tt). The parents of the three children are both tasters (Tt), and both sets of grandparents are tasters (TT). The two boys are tasters (TT or Tt), and the girl is a nontaster (tt).
which of the following research questions would best guide an investigation of the link between the structure of the signaling molecules and the evolution of quorum sensing?
Bacteria secrete signal molecules into their current circumstance and utilize these to direct a large number of their key aggregates. This is called majority detecting and it is remembered to advance since it permits cells to detect their thickness.
Quorum sensing (QS) is a flagging instrument by which microorganisms impart among themselves and with different creatures (1-3). Through QS, they sense and answer ecological changes by means of sign transduction occasions involving flagging particles in a thickness-subordinate way (4).
In the majority of detecting, microbes screen the thickness of the populace (the number of different microorganisms nearby) in view of synthetic signs. While the flagging arrives at an edge level, every one of the microorganisms in the populace will change their way of behaving or quality articulation simultaneously.
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Answer:
Did these species evolve from a common ancestor that used a similar signaling molecule?
Explanation:
Effervescence occurs when this mineral reacts with hydrochloric acid
Answer:
Magnesite
The mineral magnesite, which has a chemical composition of MgCO3, will effervesce weakly with warm hydrochloric acid and very weakly with cold acid.
22. The diagram shows how some organisms interact with each other.
What does the diagram represent?
A. The flow of energy throughout a population
B. The flow of energy throughout an ecosystem
C. The energy levels received by each organism
D. The energy levels received by each community
The diagram shows how some organisms interact with each other and represents the flow of energy throughout an ecosystem and is therefore denoted as option B.
What is Food web?This consists of all the food chains which are present n a single ecosystem and also shows the feeding relationship between organisms which are present in a community.
Food web consists of all the organisms in the ecosystem such as the primary producer in the form of plants and tertiary consumers in the form of bigger animals such as hawk, lion etc and how energy flows in the form of food.
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acute labyrinthitis is sudden onset of inflammation of the structures that form the membranous labyrinth. which of the following structures would not be inflamed with this condition? a) Semicircular canals
b) Malleus
c) Utricle
d) Cochlea
Malleus would not be inflamed with acute labyrinthitis because The malleus is an ossicle it is not part of the inner ear.
The condition known as labyrinthitis, which affects balance, can be brought on by an infection or inflammation of the inner ear. When you have an upper respiratory infection, such as the flu, you may occasionally contract it.
Viruses frequently induce labyrinthitis-causing inner ear infections. At times, bacteria may also be the culprit. Doctors must distinguish between viral and bacterial diseases since their symptoms can sometimes be so similar.
The malleus, or hammer, is a hammer-shaped small bone or ossicle of the middle ear. It connects with the incus, and is attached to the inner surface of the eardrum. The word is Latin for 'hammer' or 'mallet'. It transmits the sound vibrations from the eardrum to the incus (anvil).
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Rabbits _______, whereas Pacific salmon _______.
O have embryonic diapause; do not
O are iteroparous; are semelparous
O have seasonal reproductive seasons; do not
O have internal fertilization; fertilize eggs with spermatophores
O are semelparous; reproduce only once
While Pacific salmon were semelparous, rabbits become iteroparous. used to characterize organisms with several generations of reproduction.
What kind of organisms are iteroparous?An organism that has many reproductive processes during its lifespan is said to be iteroparous. An illustration of an iteroparous organism is the pig. We come to the conclusion that the majority of insects might be called iteroparous rather than semelparous, meaning that many insects have various reproductive efforts during their adult lives.
Plants are they iteroparous?Whereas all angiosperms are semelparous, not everyone perennial flora are. This distinction is significant. Numerous species of animals and plants have long lifespans before experiencing a single, enormous, lethal reproductive episode.
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You continue your analysis by crossing the forked and twist lines. Your results are as follows: Which of the following statements best explains the outcome of this cross? O The forked mutation has recombined with the twist mutation. O The forked mutation and the twist mutation are codominant alleles of the same locus. O The forked mutation is incompletely dominant to the twist mutation. O The twist mutation is incompletely dominant to the forked mutation. O The forked mutation is epistatic to the twist mutation. O The twist mutation is epistatic to the forked mutation.
The Codominant alleles of the same gene include the twist mutation and the forked mutation.
A monohybrid cross is one in which the two lines crossed are mutant via mutation at the same locus and in which the F2 lacks wild-type offspring. The phenotype in codominance displays both alleles present in the genotype. Alleles from the genotype are mixed together in the phenotype in incomplete dominance. In contrast to codominance, which involves the child displaying the features of both parents, incomplete dominance occurs when neither parent's characteristics are fully expressed in the offspring.
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Sara is an excellent ballet dancer who just began taking a class in modern dancing. as she learns this new style, practicing the different movements involved, which of the following parts of her brain will play the biggest part in helping her learn?
- basal ganglia
- amygdala
- hippocampus
- pariental lobe
the Basal ganglia of her brain will play the biggest part in helping her learn this new style of ballet dancing.
The term "basal ganglia" refers to a group of subcortical cores that are primarily responsible for engine control, as well as other tasks such as engine learning, chief capacities and practices, and so on.
The basal ganglia are a bunch of structures in your brain's center that form significant associations. These connections allow multiple parts of your brain to communicate with one another. The basal ganglia monitor the signals sent by your brain that allow you to move your muscles.
There are a few contrasts in humans and a few primates, primarily in the division of the globus pallidus into an outer and inner district, and in the division of the striatum.
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Feeding relationships can be represented by different models—how can we decide when one model is better than another?
Im offering 25 points help me
Feeding relationships can be represented by different models and we can decide when one model is better than another if the flow of energy and matter is well represented.
What is Feeding relationship?This is referred to as a model which involves one organism eating another to gain nutrition being represented in various ways.
An example is a food chain which depicts how energy and matter flows in the ecosystem as a result of it being represented by the organisms involved and also the diorection in which the flow occurs which is therefore the reason why it was chosen as the correct choice.
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What role does deforestation play in Latin American politics?
Answer:
Deforestation is a significant issue in Latin American politics. It is a major contributor to climate change and has negative impacts on the environment and biodiversity in the region. Deforestation also has economic and social consequences, as it can lead to soil erosion and loss of valuable resources, such as timber and medicinal plants.
In recent years, deforestation has been a major focus of environmental policies in many Latin American countries. Governments have implemented a range of measures to address deforestation, including legislation to protect forests, support for sustainable agriculture and forestry, and initiatives to reduce illegal logging and land clearance.
However, deforestation continues to be a challenge in the region, and there are often conflicting interests between different stakeholders, including local communities, ranchers, loggers, and conservationists. As a result, deforestation remains a complex and contentious issue in Latin American politics.
Identify a true statement of the subjective effects of marijuana.
infrequent smokers are likely to experience more intense subjective effects
Infrequent smokers are likely to experience more intense subjective effects.
Cannabis also known as marijuana among other names, is a psychoactive drug from the cannabis plant. Native to Central or South Asia, the cannabis plant has been used as a drug for both recreational and entheogenic purposes and in various traditional medicines for centuries.
Tetrahydrocannabinol (THC) is the main psychoactive component of cannabis, which is one of the 483 known compounds in the plant, including at least 65 other cannabinoids, such as cannabidiol (CBD). Cannabis can be used by smoking, vaporizing, within food, or as an extract.
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which of the following is found in the posterior mediastinum? group of answer choices thoracic duct heart right lymphatic duct primary bronchi thymus
The posterior thoracic mediastinum contains the descending aorta. A)Thoracic duct is found in posterior mediastinum. So, correct option is A.
The posterior Mediastinum is a sporadic three-sided space running lined up with the vertebral segment. The most striking blood vessel branches in this district are the proximal bits of the intercostal courses. It is limited in front by the pericardium above, and by the back surface of the stomach beneath, behind by the vertebral section from the lower boundary of the fourth to the twelfth thoracic vertebra, and on one or the other side by the mediastinal pleura.
It contains the thoracic piece of the dropping aorta, the azygos and the two hemiazygos veins, the vagus and splanchnic nerves, the throat, the thoracic pipe, and some lymph organs.
Hence, correct option is A.
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(Complete question) is:
which of the following is found in the posterior mediastinum? group of answer choices
a)thoracic duct
b)heart right lymphatic duct
c)primary bronchi
d)thymus
they are termed dominant and ____, for the ____ allele typically masks the expression of the other allele when they are both located in the same cell.
They are termed dominant and Recessive, for the dominant allele typically masks the expression of the other allele when they are both located in the same cell.
Every gene in a species that reproduces sexually, including humans and other animals, has two copies. The two copies, which are referred to as alleles, may differ slightly from one another. The differences can alter protein expression or produce variations in the produced protein: when, where, and in what quantities protein is produced. Proteins influence traits, so varieties in protein movement or articulation can deliver various phenotypes.
The relationship between two gene versions is referred to as dominant. Each parent gives an individual two copies of each gene or allele. One allele will be expressed if a gene has different alleles; It is the most common gene. Masked is the effect of the other allele, which is called recessive.
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FILL IN THE BLANK. Angular movements (flexion, extension, hyperextension, etc.), like bending your arm at your elbow involves the use of the ______________ joints.
Angular movements involves flexion, extension, hyperextension etc. like bending your arm at your elbow involves the use of the attached joints.
Angular movements are delivered by changing the point between the bones of a joint. There are a few unique kinds of precise developments, including flexion, expansion, hyperextension, kidnapping, adduction, and circumduction. Flexion, or twisting, happens when the point between the bones diminishes.
Moving the lower arm up at the elbow or moving the wrist to push the hand toward the lower arm are instances of flexion. In expansion, something contrary to flexion, the point between the bones of a joint increments. Fixing an appendage after flexion is an illustration of expansion.
Augmentation past the typical physical position is alluded to as hyperextension. This incorporates moving the neck back to look up or bowing the wrist so the hand gets away from the lower arm.
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which of the following statements about the clonal selection theory of immune system function is false?
-a. antigens are recognized by receptor proteins inside the lymphocyte
-b. an activated lymphocyte makes many copies of itself in response to an infection
-c. cloned cells persist after the pathogen is eliminated
-d. each lymphocyte recognizes one antigen
The false statement about the clonal selection theory of immune system function is statement A, “antigens are recognized by receptor proteins inside the lymphocyte.” This statement is false because antigens are actually recognized by receptor proteins on the surface of the lymphocyte.
The clonal selection theory of immune system function states that when antigens enter the body, they are recognized by receptor proteins on the surface of the lymphocyte. This triggers the activation of the lymphocyte, which will then make many copies of itself in response to the infection. The cloned cells will persist in the body even after the pathogen has been eliminated. Each lymphocyte has the ability to recognize one antigen.
The clonal selection theory of immune system function is the basis for the human body’s ability to respond and protect itself from disease. It is a complex process that allows the body to recognize, fight, and remove foreign invaders, therefore protecting us from harmful bacteria and viruses.
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hormones often interact in an integrative way, producing different but complimentary results. examples of this include all of the following except .
hormones often interact in an integrative way, producing different but complimentary results, examples of this include all except lowering blood sugar by insulin.
integrative Effects In, hormones may have distinct effects that complement one another. explicit tissues and organs. Important are these integrative effects. in coordinating the various physiological systems' activities.
Insulin makes it easier for blood sugar to get into the cells of the body and be used for energy. Insulin additionally flags the liver to store glucose for some time in the future. When sugar from the blood reaches cells, levels in the bloodstream fall, prompting insulin to also fall.
thus, lowering blood sugar with insulin is not an integrative way.
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Which enzyme synthesizes tRNA?
Reverse transcriptase
RNA polymerase
Aminoacyl-tRNA synthetase
Ribosomal RNA
DNA polymerase
RNA polymerase enzyme synthesizes tRNA in the cytoplasm of the cell.
A type of RNA molecule known as transfer ribonucleic acid (tRNA) aids in the translation of a messenger RNA (mRNA) sequence into a protein. During translation, the process of making a protein from an mRNA molecule, tRNAs act at specific locations in the ribosome.
An enzyme known as RNA polymerase is responsible for making mRNA, tRNA, and rRNA.
The genes for tRNAs and the smallest species of ribosomal RNA, 5S rRNA, are transcribed by RNA polymerase III. RNA polymerase III also transcribes some of the small RNAs (snRNAs and scRNAs) involved in splicing and protein transport, while others are polymerase II transcripts.
The mature tRNA in eukaryotes is made in the nucleus and sent to the cytoplasm for charging.
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Part B - Relationship between population size and growth rate
A population of animals in a specific environment with a K of 2500 has rmax of 1.0 per individual per year and exhibits logistic growth as follows:
dN/dt}=rmax.N.(K-N)/K
Arrange the following population sizes in order of decreasing growth rate.
Rank the population sizes(N)from fastest to slowest growth rate. If two population sizes have the same growth rate, overlap them. (For help calculating growth rate, see Hint 1.)
Arrangement of the population sizes in the order of decreasing growth rate 1250> 1000 = 1500(same growth rate) > 750> 500> 250.
More and more of the offspring will survive if the rate of growth increases. As a result, there is a cumulative effect in which the slope gets steeper as the growth rate increases.
growth rate is given by as dN/dt=rmax.N.(K-N)/K
where r = 1.0 and K = 2500 are constant
at N = 750
dN/dt = 0.1 × 750 × (2500-750)/2500
= 52.5
at N = 500
dN/dt = 0.1 × 500 × (2500-500)/2500
= 40
at N = 1000
dN/dt = 0.1 × 1000 × (2500-1000)/2500
= 60.0
at N = 1250
dN/dt = 0.1 × 1250 × (2500-1250)/2500
= 62.5
at N = 250
dN/dt = 0.1 × 250 × (2500-250)/2500
= 22.5
at N = 1500
dN/dt = 0.1 × 1500 × (2500-1500)/2500
= 60
the more value of dN/dt, the more will be the growth rate.
hence, 1250> 1000 = 1500(same growth rate) > 750> 500> 250.
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the brain area just anterior to the precentral gyrus that controls learned, repetitious, or patterned motor skills and coordinates simultaneous or sequential actions is the
The brain area just anterior to the precentral gyrus that controls learned, repetitious, or patterned motor skills and coordinates simultaneous or sequential actions is the Premotor cortex.
The premotor cortex is an important part of the brain that is thought to have full influence over voluntary muscle movements. The premotor cortex is roughly six times the size of the primary motor cortex. The motor area of the premotor cortex is located anterior to the primary motor cortex. The premotor cortex is in charge of the body's more proximal muscles and trunk muscles.
The premotor cortex is in charge of organizing and planning activities and movements. Prefrontal and premotor neuron activity prompts activation of the primary motor cortex and spinal cord neurons.
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T/F in general, the metabolic oxidation of protein in mammals is less efficient, in terms of energy conserved, than the metabolic oxidation of carbohydrate or fat.
It is true that the metabolic oxidation of protein in mammals is less efficient, in terms of energy conserved, than the metabolic oxidation of carbohydrates or fat.
Aerobic life naturally results in protein oxidation in vivo. Changes in the amino acids of proteins caused by oxygen radicals and other activated oxygen species, either as byproducts of cellular metabolism or from the environment, typically result in the loss of protein function or enzymatic activity.
Adenosine triphosphate (ATP) can be produced by oxidizing carbohydrates and protein. Amino acids can enter the metabolic pool when proteins are broken down. After that, the amino acids can enter the metabolic pathway at any one of the following points: the citric acid cycle, the conversion of acetyl CoA, and the conversion of pyruvate. Glycolysis is where carbohydrates begin their journey through the metabolic pathway.
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Help me please on #4 I will mark brainzillest
Differentiated cells may look different but they have the same functions, the cells become grouped with similar cells result into formation of tissues, they make up tissues and organs of multicellular organisms. Thus, the correct option is B.
What is Cell differentiation?
Cellular differentiation or cell differentiation is the process through which a stem cell undergoes change from an undifferentiated form to a differentiated one. Usually, the cell changes to a more specialized type in this process.
The fundamental benefits of cellular differentiation includes the formation of more specialized and efficient cells which are involved in performing specific functions. For example, to ease water transport through the tracheary parts of the xylem, these cell loses its protoplasm and develops a lignified cell wall. The red blood cells in the living organisms which loose organelles to make more space for the hemoglobin pigment in the cell.
Therefore, the correct option is B.
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In fruit flies, the recessive pr and cn mutations cause brown and bright-red eyes, respectively (wild-type flies have brick-red eyes). The double mutant pr-cn combination has orange eyes. An F1 female who is wild-type is crossed to an orange-eyed male. Their F2 progeny have the following distributions:
| Wild Type | 8 |
| Brown | 241 |
| Bright-Red | 239 |
| Orange | 12 |
According to the Cell Theory, the is the basic unit of life; according to the Organismal Theory the is the basic unit.
Answer: The second part
Explanation:
The cell theory was proposed by Theodor Schwann in 1839. There are three parts to this theory. The first part states that all organisms are made of cells. The second part states that cells are the basic units of life.