Answer: The following statements are true about plant cells-
-They have a cell wall
-They have the same functions
Explanation:
A cell wall is present in a plant cell to keep its structure and rigidity. They are made from cellulose.
All plant cells have a nucleus, ribosomes, mitochondria and cell membrane and they all have the same functions as they would have in an animal cell.
Statement 1 is false as plant cells are eukaryotic, which means they have a nucleus.
Statement 2 is also false because a plant cell needs a cell membrane to separate the vacuole and the organelles.
Hope that helped :)
6. The drawings below represent three different birds. The beak shape makes it easy for
each bird to obtain food in a different way.
The differences in beak shape are examples of
(1 point)
0000
camouflage
dynamic equilibrium
competition
biological adaptation
The differences in beak shape are examples of the biological adaptation of the birds to obtain food.
What is biological adaptation?Biological adaptation is a characteristic of an organism's phenotypic traits in relation to environmental selection pressures. Adaptive features are those that have form and function characteristics that enable the organism to successfully sustain the synergy between a feature's biological purpose and a stated selection force. The quantity of energy required to sustain the synergy can be used to gauge how well an adaptation is working, with lower energy requirements suggesting better adaptation.
What is a beak?An external anatomical feature called the beak, bill, or rostrum is usually present in birds but can also be seen in turtles, non-avian dinosaurs, a few mammals, and other animals. To eat, groom, manipulate things, kill prey, battle, probe for food, court, and feed young, an animal uses its beak.
Hence, the differences in beak shape are examples of the biological adaptation of the birds to obtain food.
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Which of the following can be a challenge when implementing a green space? (1 point)
O making sure no buildings are around it
O making sure there are enough sidewalks
O making sure it is not shaded
O making sure access is equitable
Answer: D. making sure access is equitable
Explanation: When implementing a green space, one of the challenges can be ensuring equitable access. It is important to make sure that the green space is easily accessible to all members of the community, regardless of their location or socioeconomic status. This can involve factors such as the proximity of the green space to residential areas, public transportation options, and the presence of sidewalks or pathways that allow people to reach the green space safely.
Which of the following is the best explanation of why it is difficult to discriminate the color of an object at night?
Rods contain a single kind of visual pigment.
Cones come in three types, each sensitive to different wavelengths of light.
The foveae are densely packed with cones.
As many as 100 cones may converge on one ganglion cell.
The response is A. Cones occur in three varieties, each of which is sensitive to a particular range of light wavelengths.
Cones are the three different types of light-detecting cells found in the eyes. Green is the color that is easiest to notice throughout the day because light & color travel in waves.
Several of the cones are "less active" in the absence of daylight, which makes colors harder to discern. As a result, yellow is easier to notice at night since there is less light to aid in color perception.
Cone and rod cells can be found in the retina. We can see in low light thanks to our rod cells, and we can perceive color thanks to our cone cells.
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What is an
example of a
physiological
adaptation in
emperor penguins?
A. the coloring of their bodies to camouflage in the water
B. huddling together in the winter and rotating to keep
warm
C. controlling their heart rates to slow down to use less
oxygen and go longer without food this is the answer
Answer:
C. controlling their heart rates to slow down to use lessoxygen and go longer without food
Explanation:
An example of a physiological adaptation in emperor penguins is controlling their heart rates to slow down to use less oxygen and go longer without food.
Emperor penguins are adapted to live in the extreme cold of the Antarctic. They have several physiological adaptations that allow them to survive in this environment. One of these adaptations is their ability to control their heart rates. When they are swimming or diving, emperor penguins can slow down their heart rates to conserve oxygen and go longer without food. This allows them to conserve energy and survive in the cold water.
Other physiological adaptations in emperor penguins include their thick layers of blubber, which help to insulate their bodies and keep them warm, and their specialized feathers, which help to reduce heat loss from their bodies. These adaptations allow emperor penguins to thrive in the harsh conditions of the Antarctic.
The body loses water in a variety of ways. Put the water output mechanisms in order from greatest contribution to fluid loss (1) to least contribution to fluid loss (4) per day.
The maximum to minimum body water loss occurs by: Urine production, Skin losses, Lung respiration and minimum by Feces
What are the ways in which body loses water ?Through breathing, sweating, and peeing, the body continuously loses water. You become dehydrated if you don't drink enough water or other liquids.
The majority of fluid loss happens through the stools, sweat, and urine, but it's not only those things. The quantity of body fluid lost daily through the skin, respiratory system, and water in the feces that cannot be readily measured is known as insensible fluid loss.
Physical exercise also influences increased respiratory water loss due to the increased expiratory volume and frequency of breathing. Various environmental elements like temperature, humidity, radiation, and atmospheric pressure mostly affect sweating and urine water loss.
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please help Conduct online research on a coastline nearby or any coastline of your choice and describe the geological process of the coastline. Add a note on how these features affects the lives of people living in the area.
Seacoasts are land. Coastlines are where land meets water. Waves, tides, and currents form coasts. Waves degrade land. For example: Great Ocean Road, Australia.
What is a coastline?The coastline is the area of a shoreline where land and water converge. Coastlines are shaped in part by currents, tides, and waves. The ground is eroded or worn away when waves crash upon the shore.
Coastal regions can be divided into four categories: emergent, submergent, discordant, and concordant. Submergent beaches have sunk below the water, while emerging coastlines have protruded from it.
Beaches, mudflats, cliffs, and caverns are just a few of the many varied characteristics of coasts. These coastal characteristics are shaped by tides, waves, and water currents (flow). Glaciers, which are massive rivers of ice, and volcanic lava flow both alter some beaches.
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What role does correctly giving credit to the real researcher play in any academic writing?
To prevent plagiarism in your writing, sources must be properly cited. When ideas, facts, and language you use were actually written by another author, improper citation of sources could give the impression that they are your own. Plagiarism is more than simply using another author's words verbatim.
How significant is it when writing an academic paper to properly credit the original author?Why citing is crucial. For several reasons, it's crucial to cite the sources you used for your study: by citing the sources you used to gather your information, you can convince your audience that you did thorough research. to acknowledge the work of other scholars and give them due credit for their contributions.
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the fact that the human brain is not completely developed at birth means that___greatly influence(s) human brain development.
The fact that the human brain is not completely developed at birth means that environment greatly influence(s) human brain development.
Human brain development is a complex procedure and unlike other organs, the human brain is not completely developed at the time of birth.
Apart from the development inside the mother, the environment also has a major influence on the development of the human brain.
This is the reason, the brain of each person is influenced by the exposure to the environment that he gets. The development of the cognitive brain is associated with various environmental aspects of society. Hence, not all of the brain of a person has been developed at the time of birth.
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although a deletion heterozygote carries one normal chromosome, it may still exhibit a mutant phenotype if the deletion removes a gene that is
In diploid organisms, loss of heterozygosity (LOH), a type of genetic anomaly, refers to the loss of one copy of a complete gene and the surrounding chromosomal area.
One copy of the missing gene is still there since diploid cells contain two copies of each of their genes, one from each parent.In diploid organisms, loss of heterozygosity (LOH), a type of genetic anomaly, refers to the loss of one copy of a complete gene and the surrounding chromosomal area. One copy of the missing gene is still there since diploid cells contain two copies of each of their genes, one from each parent.However, there is no longer any heterozygosity, which refers to minute variations in the gene versions acquired from each parent.
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Multiple sclerosis is brought about by __________.O a buildup of amyloid protein in the brainO a viral infection of the meningesO the gradual breakdown of the myelin sheath of the CNSO the destruction of cells in the basal ganglia
The immune system wrongly attacks the brain and nerves, which results in multiple sclerosis. Thus, Multiple sclerosis is brought about by _____immune system_____.
What is multiple sclerosis ?Multiple sclerosis doesn't have a known etiology. A body's immune system attacking its own tissues is regarded as an autoimmune disease. The fatty substance that covers and shields the nerve fibers in the brain and spinal cord in MS is destroyed by this immune system error (myelin).
The myelin sheath, a layer that surrounds and shields the nerves, is attacked by the immune system in MS. As a result of the damage and scarring to the sheath and possibly the underlying nerves, messages moving along the nerves slow down or are disrupted.
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Taigas, tundras, and tropical rainforests share what common abiotic component?
Responses
freezing temperatures
freezing temperatures
a lot of sunlight
a lot of sunlight
nutrient-poor soil
nutrient-poor soil
little precipitation
Answer:
A lot of sunlight
Explanation:
Although taigas and tundra's have colder climates, they receive a lot of indirect sunlight. Tropical rainforests receive a lot of sunlight as well.
If your instructor asked you to trace the process of urine formation, which of the following identifies the steps in the correct order?
Glomerular filtration occurs first and then reabsorption and secretion occur simultaneously
Three phases are involved in the production of urine: Glomerular filtration occurs through the semipermeable and glomerulus and glomerulus capsule.
What are the four steps in the creation of urine?Plasma is the first step in four fundamental procedures that create urine.
Filtration.
Reabsorption.
In the distal tubule and collecting duct, hormones regulate reabsorption, regulating the pace at which sodium and water are transported based on systemic circumstances.
Secretion.
Excretion.
Give a brief description of each of the four urinary tract structures?Organs that filter blood to produce urine include two kidneys. the organ that houses the bladder and stores urine. Your two ureters, or tubes, join your kidneys and bladder. the tube that joins your bladder to the outside of your body, the urethra.
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Which of the following cranial nerves is mispaired?A. trochlearB. opticC. facialD. abducensE. accessory
The cranial nerve which is not correctly paired is (D) Abducens-V.
Cranial nerves are those nerves which originate precisely from the brain. By convention, there are twelve pairs of cranial nerves that are present in the brain. The Abducens nerve is the sixth (VI) cranial nerve. It is associated with one's ability to move the eyes. The Trigeminal nerve is the fifth (V) cranial nerve.
The question is incomplete. The complete question is:-
Which one among the following cranial nerves is not paired correctly ?
(A) Trochlear - IV
(B) Optic - II
(C) Facial - VII
(D) Abducens - V
(E) Accessory - XI
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ucu to ucc in a bacterium there is mutation in the gene for the repressor protein of the lac operon when lactose is present how owuld this mutation affect the function of the lac operon
The mutation in the gene for the repressor protein of the lac operon when lactose is present, the lac repressor loses its ability to bind DNA.
What is the lac operon?The lаc operon is а group of genes with one promoter thаt encodes proteins to use lаctose, аs аn energy source for enteric bаcteriа. Enteric bаcteriа аre bаcteriа found in the intestines.
Since glucose is much eаsier to breаk down thаn lаctose, the lаc operon will only turn on if there is no glucose present аnd only lаctose present. In order to determine when to turn it on, the lаc operon contаins two regulаtory proteins thаt function аs sensors. The lаc repressor is аble to sense the аmount of lаctose, аnd the cаtаbolite аctivаtor protein (CАP) is аble to sense the аmount of glucose. Both the lаc repressor аnd the CАP аre bound to the lаc operon DNА аnd аssist with trаnscription bаsed on the аmount of lаctose аnd glucose.
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neurons are specialized to send stimuli to the brain, whereas ___ neurons send signals to the effectors of the nervous system.
The neurons are specialized to send stimuli to the brain, whereas _sensory neurons send signals to the effectors of the nervous system.Sensory (afferent) neurons – afferent neurons are specialised to stumble on stimuli and transmit the statistics to CNS.
Neurons ship and get hold of electric indicators to talk with every different withinside the fearful device and with different styles of cells withinside the frame, specially muscle mass. At one cease, neurons have branch-like projections referred to as dendrites that permit them to get hold of indicators.
For example, sensory neurons ship statistics from the eyes, ears, nose, tongue, and pores and skin to the mind. Motor neurons convey messages farfar from the mind to the relaxation of the frame to permit muscle mass to move. Sensory afferent neurons deliver statistics from tissues and organs into the principal fearful device. Efferent neurons transmit indicators from the principal fearful device to the effector cells and are on occasion referred to as motor neurons.
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5. This discovery has been turned into a gene editing tool (CRISPR). Describe
how it works. (You need to listen to quite a bit of the podcast to understand
this)
Answer:
CRISPR is a genome editing tool that edits DNA
Explanation:
What primary consumers live in the Colorado plateau, what do they eat?
Answer:
Primary consumers make up the second level of the food pyramid and are also known as herbivores. They eat only primary producers such as plants or algae and nothing else. Their main predators are secondary consumers or sometimes also intermediate predators and top predators.
Darwin discovered that some
individuals are more suited to their
environment and that these
individuals were more likely to
survive and reproduce. What did
he call this phenomenon?
DNA replication
Evolution by natural selection this is answer
Answer: it is evolution
Explanation:
The energy required for the chemical reaction of 21.7 grams of nitrogen to produce ammonia is
kilojoules.
The energy required for the chemical reaction of 21.7 grams of nitrogen to produce ammonia is -71.1 KJ/mol.
What is a chemical reaction?A chemical reaction is the process which involves a change in the chemical composition of compounds. It involves formation of new chemical bonds between atoms.
In this case, since the formation of ammonia by starting with nitrogen and therefore hydrogen is:
N₂ + 3H₂ ⇒ 2NH₃
This chemical reaction has energy:
ΔfH(NH₃) = -45.90 KJ/ mol
We can compute the energy required for this chemical reaction by first computing the moles of ammonia yielded by 21.7 grams of nitrogen (28.02 g/mol) via stoichiometry:
nNH₃ = 21.7 N₂ × 1 mol N₂/ 28.02g N₂ × 2 mol NH₃/ 1 mol N₂ = 1.55 mol NH₃
Thus, the energy turns out:
Q = n NH₃ ΔfH(NH₃) = 1.55 mol NH₃ × -45.90 KJ/ mol
Q = -71.1 KJ
Hence, the ΔH of the chemical equation will be = -71.1 KJ/mol
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find the p-wave that travels the distance below
In order to be able to complete the above task, that is, deriving the time taken for the P-wave to travel the distances given, further information is required such as a graph showing the time-distance graph. See the example attached.
What is an example showing how to derive the distance traveled by a p-wave?For example, the accompanying graph shows that if the epicenter of an earthquake is 4000 kilometers away, the P-wave will arrive 7 minutes later. That means the first tremors will be felt at your position 7 minutes after the rupture at the epicenter.
Remember that P-waves are one of the two primary forms of elastic body waves, often known as seismic waves in seismology. Because P waves move quicker than other seismic waves, they are the first to reach at any afflicted area or seismograph following an earthquake. P waves may travel through gases, liquids, and solids.
A P-wave's velocity can be represented as:
P wave velocity = ((B + 1.3G)/Density)1/2,
where:
B is the bulk modulus, which is the resistance to volume change; and G is the Shear modulus, which is the resistance to form change.Learn more about P-waves;
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Tephroite ( a type of mineral ) important uses
( another uses than making jewerly and genstone )
(it'd might say Biology, but this is geology and there no such thing as geology when putting in school level and subject)
The minerals of the olivine group such as tephroite are used for a umber of different purposes such as in the conditioners, for the making of jewellery.
What are the uses of Tephroite?Tephroite is the manganese end-member mineral of the olivine group of the nesosilicate minerals. The formula of Tephroite is Mn₂SiO₄. It is a solid solution series which exists between the tephroite and its analogue mineral substances, such as the group endmembers fayalite and forsterite. Divalent iron or magnesium atom may readily replace the manganese atom present in the olivine crystal structure of the tephroite because of their higher reactivity than manganese atom.
Most of the olivine group minerals are used in the metallurgical processes in the blast furnace. The high-magnesium olivine that is forsterite is added to the blast furnaces to remove impurities from steel and to form aconditioner. Olivine group minerals also have been used as a refractory material. These minerals are used to make refractory brick and are also used as a casting sand.
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what is an omnivore and a carnivore and herbivore
This makes up the ribosomal subunits and reads the mRNA.
a. ribosome
b. rna polymerase
c. rRNA
d. tRNA
e. mRNA
tRNA makes up the ribosomal sub units and reads the mRNA as it is made up of two sub units where the mRNA is attached to the lower unit and it reads the mRNA that is doing proof reading as well.
What is the full form of tRNA ?
The full form of tRNA is transfer RNA.
Ribosome is the unit of the cell that is responsible for the protein synthesis and these make up the cells' proteins. rna polymerase is responsible for synthesising the RNA strand and continuing the synthesis.
tRNA is the transfer RNA that containsw the two ribosomal subunits where the two of the units are joined together and on the lower unit is the mRNA attached to which the amino acid synthesis take place and that reading is done by the tRNA is done in order to check the pattern as per the instructions.
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For which of the following conditions would you MOST likely encounter a ventricular peritoneum shunt?
you MOST likely encounter a ventricular peritoneum shunt in hydrocephalus.
Another way to treat hydrocephalus is ventriculopleural diversion (VPLS), which diverts additional cerebrospinal fluid into the pleural space. Pleural effusion develops and accumulates as a result of an imbalance between CSF production and absorption.
How long does a ventriculoperitoneal shunt last?After several years, especially in younger children, the VP shunt may need to be replaced. The life expectancy of a newborn shunt is her two years. Adults or children 2 years and older may not need shunt replacement for 8 years or longer.
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A neuroscientist is interested in seeing how quickly groups of neurons can respond to a complex
sequence of stimuli. Which parameters would be most important for measuring responses given
the technique she chooses to use?
EEG stands for electroencephalography, a procedure in which electrodes are tiny detectors that are applied to the scalp using a cap or a headset. The electrical activity of clusters of neurons that simultaneously transmit electrical impulses with a similar pattern is measured by EEG.
What method is the most widely used to gauge brain activity?Electroencephalography (EEG), magneto encephalography (MEG), and functional magnetic resonance imaging (fMRI) are the three most popular and often utilized measurements (EEG). EEG is the most adaptable and economical approach among these techniques.
Which of the following can be used to assess the neuronal activity of the brain?An EEG can identify variations in brain activity that may help in the diagnosis of several brain illnesses, including epilepsy or another seizure disorder.
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what are 3 requirements for a trait to become more common over time in a population ?
The three requirements for a trait to become more common over time in a population area;
inbreeding among the populationno random selection of genesno immigration of species occurWhat are traits?Traits are qualities or characteristics that are shared between living organisms as a result of the transfer of these traits from parents to offspring.
Traits are determined by genes.
Genes are the basic unit of inheritance. Genes are regions of DNA that code for a particular product.
The combination of the genes present in an organism is responsible for the traits that are observed in organisms.
The combination of genes in an organism is known as the genotype whereas the observable traits in an organism is known as the phenotype.
Genes for a particular trait in an organism have alternate forms known as alleles. When an organism has similar copies of the allele for a trait, the organism is said to be homozygous for that trait, but when an organism has different alleles for a trait, the organism is said to be heterozygous for that trait.
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which of the following iucn conservation categories would be a priority for protection of a species, compared to others?
920 species have been prioritized as being Endangered or Critically Endangered (IUCN) AND limited to a single remaining location, including mammals, birds, amphibians, reptiles, conifers, and reef-building corals.
Explain about the IUCN?The IUCN is the foremost authority on the state of nature and the steps that must be taken to protect it. Its expertise are divided into six Commissions: one for ecosystem management, one for social and economic policy, one for environmental law, one for protected areas, and one for education and communication.
The IUCN has grown to be the world's foremost authority on the state of the natural world and the steps that must be taken to protect it since its founding in 1948. For human advancement, economic development, and nature conservation to occur simultaneously, the information and resources that IUCN offers are essential.
The International Union for the Conservation of Nature (IUCN), officially known as the International Union for the Conservation of Nature and Natural Resources and formerly known as the World Conservation Union, is a network of environmental organizations.
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Genes contain the keys for constructing
purines
nucleosomes
proteins
pyrimidines
Answer:
proteins
Explanation:
aaaaaaaaaaaaaaaaaaa
Answer: The answer is C. Proteins
Explanation:
22. What is the central iden of "A Brief History of DDT"?
ects. but its harmful effects led to limited use.
B. Rachel Carson was attacked by the chemical Kennedy defended her.
C. Pesticides such as DDT cause liver tumors in mice and cancer in humans.
D. If it hadn't been for Rachel Carson, farmers would still be spraying their crops with DDT:
Pesticides such as DDT cause liver tumors in mice and cancer in humans.
what is DDT ?
The first of the current synthetic pesticides, DDT (dichloro-diphenyl-trichloroethane), was created in the 1940s. Malaria, typhus, and other human illnesses spread by insects were the first to be successfully treated with it in both military and civilian populations. Additionally, it worked well to control insects in houses, institutions, gardens, dwellings, and crop and livestock production. Due to DDT's widespread usage and early effectiveness as a pesticide in the US and other nations, many insect pest species have developed resistance to it.
DDT is:
a substance that is known to be extremely persistent in the environment, builds up in fatty tissues, and
in the high atmosphere, may travel great distances.
Although the concentration of DDT in the environment and animals has dropped since it was no longer used in the United States, residual danger from earlier usage is still present due to its persistence.
Concerns about hazards to the environment, wildlife, and public health led to the EPA's 1972 prohibition. A possible causal link between DDT exposure and reproductive impacts is also postulated.
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Discuss how crossing-over leads to greater variability of phenotypes. list when and where it occurs in your answer.
The exchange of chromosomal segments between nonsister chromatids during meiosis is known as crossing over or recombination. Genetic diversity is increased by the cross-over of novel gene combinations that do not exist in either parent in the gametes.
Where does the crossing take place?When homologous chromosomes are fully coupled during the pachytene stage of meiosis, crossing-over takes place. Chiasmata, which retain the two homologs of a bivalent together until segregation at anaphase I, are apparent as the sites of crossing-over at diplotene, when homologs split.
To boost genetic variety, a process called crossing over takes place between homologous chromosomes. An exchange of chromosomal segments occurs during crossing over. The outcome is a hybrid chromosome with a distinctive genetic material pattern.
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