selective pressures an change if the environment changes.
The correct answer is option C.
The picky pressure description is an evolutionary force that causes a particular phenotype to be more favorable in certain environmental conditions. picky pressures are considered forces that drive elaboration via natural selection. Some phenotypes are more favorable than others, depending on external conditions. Natural selection is one variable in elaboration, but it isn't the only type of selection. Other types of selection include artificial, sexual and kin selection.
These picky pressures affect in accommodations-particular cultures or body plans that give an advantage in a specific terrain. Selection pressures are external agents which affect an organism's capability to survive in a given terrain. Selection pressures can be negative( decreases the circumstance of a particularity) or positive( increases the proportion of a particularity)
Learn more about selective pressures at
https://brainly.com/question/30748568
#SPJ4
How do small molecules, such as water, oxygen, and carbon dioxide, enter and exit cells by passive transport?
A. They flow from areas of lower concentration to areas of higher concentration.
B. They move through the cell membrane randomly, regardless of the concentrations.
C. They are pushed through the cell membrane by carrier proteins when they are needed.
D. They flow from areas of higher concentration to areas of lower concentration.
help me please
Answer:
D. They flow from areas of higher concentration to areas of lower concentration.
Explanation:
Gases like carbon dioxide and oxygen can move across the cell membrane via diffusion. Diffusion is the movement of gas molecules from a region of higher concentration, to a region of lower concentration through a semi-permeable membrane.
The small molecules enter and exit cells by passive transport as: (D) They flow from areas of higher concentration to areas of lower concentration.
In passive transport, small molecules like water, oxygen, and carbon dioxide move across the cell membrane without the need for energy expenditure by the cell. The movement of these molecules occurs along the concentration gradient.
This process is driven by the natural tendency of molecules to achieve equilibrium, where their concentrations are evenly distributed on both sides of the cell membrane. As a result, small molecules like water (osmosis), oxygen, and carbon dioxide will diffuse through the cell membrane in the direction of lower concentration until equilibrium is reached.
To know more about passive transport, here
brainly.com/question/11345842
#SPJ2
wavelength of 3.0 x 106-7 what is the frequency of a uvb ray
The frequency of the UVB ray would be 1.00 x 10^15 Hz.
Frequency of a waveTo calculate the frequency of a UVB ray with a wavelength of 3.0 x 10^-7 meters, we can use the following equation:
c = λν
where c is the speed of light (approximately 3.00 x 10^8 m/s), λ is the wavelength in meters, and ν is the frequency in hertz (Hz).
Rearranging the equation to solve for frequency, we get:
ν = c/λ
Plugging in the values for c and λ, we get:
ν = (3.00 x 10^8 m/s) / (3.0 x 10^-7 m)
ν = 1.00 x 10^15 Hz
Therefore, the frequency of a UVB ray with a wavelength of 3.0 x 10^-7 meters is approximately 1.00 x 10^15 Hz.
More on the frequency of a wave can be found here: https://brainly.com/question/30333783
#SPJ1
what is the angle formed by the intervertebral foramina and the midsagittal plane in the thoracic spine
The angle formed by the intervertebral foramina and the midsagittal plane in the thoracic spine is 90 degrees. The spinal column is composed of a series of vertebrae. Each of these vertebral bodies has a central hole or opening, known as the vertebral foramen.
In addition, on each side of the vertebra, there is a smaller opening known as the intervertebral foramina through which the spinal nerves exit. The angle formed by the intervertebral foramina and the midsagittal plane in the thoracic spine is 90 degrees. The midsagittal plane is a vertical plane that runs through the center of the body, dividing it into equal right and left halves. The thoracic spine, also known as the upper back, is part of the spine that starts beneath the neck and extends down to the abdomen.
Learn more about intervertebral foramina: https://brainly.com/question/30788968
#SPJ11
which of the following are prevented from entering the interstitial fluid of the brain, due to the blood-brain barrier?Waste products in the blood
Some hormones
Nicotine
Alcohol
The following substances are prevented from entering the interstitial fluid of the brain, due to the blood-brain barrier: Nicotine and Alcohol.
The blood-brain barrier is a semipermeable barrier that separates the blood from the brain's interstitial fluid, thus preventing potentially harmful substances from entering the brain. It is made up of endothelial cells, which line the capillaries in the brain's blood vessels, as well as astrocytes, which provide structural support and regulation. The blood-brain barrier allows certain substances to pass through, such as glucose and amino acids, while restricting others. The following substances are prevented from entering the interstitial fluid of the brain due to the blood-brain barrier: Nicotine and Alcohol.To learn more about the interstitial fluid of the brain please visit:
https://brainly.com/question/14703398
#SPJ11
What are tube feet used for? Choose all that apply.
A.movement
B.reproduction
C.air exchange
D.sensing
For movement and sensing, tube feet are used.
What purpose serve tube feet?In addition to aiding in movement, tube feet are utilised by urchins to grab food and are a component of their respiratory system. Sea urchin that goes past the spines. The tube feet have respiratory and sensory functions on the top side of the body, close to the anus.
How do tube feet help with movement?As water is injected into the tube feet, they are thin tubes that stretch. The starfish's epidermis has a sieve plate that allows water to enter, and its muscles force water into each tube foot. The chamber of the tube foot is filled with water during its entire length.
To know more about tube feet visit:-
https://brainly.com/question/29494088
#SPJ1
what is the most likely reason for why the hearts of some vertebrates evolved to have four chambers, when ancestral fish had only two chambers?
Answer: The most likely reason for why the hearts of some vertebrates evolved to have four chambers when ancestral fish had only two chambers is because a four-chambered heart allows for a more efficient separation of oxygenated and deoxygenated blood.
Animals with a four-chambered heart have an efficient circulatory system that enables them to deliver oxygen to their tissues effectively. The four-chambered heart is a result of a morphological evolution from the original two-chambered heart. It is more efficient because of the separation of the oxygen-rich blood and the oxygen-poor blood into two different chambers, allowing for more effective oxygenation of the blood.
The atrium and ventricle of a two-chambered heart pump blood together into a single artery. On the other hand, the four-chambered heart separates oxygenated and deoxygenated blood, making it easier to transport blood to the body. In the heart of four-chambered animals, deoxygenated blood flows to the lungs from the right side, while oxygenated blood flows to the rest of the body from the left side.
Thus, the most likely reason for why the hearts of some vertebrates evolved to have four chambers when ancestral fish had only two chambers is that a four-chambered heart allows for a more efficient separation of oxygenated and deoxygenated blood.
Learn more about heart here:
https://brainly.com/question/16566688#
#SPJ11
a mutation in a single gene may cause a major change in the body of a fruit fly, such as an extra pair of legs or wings. yet it probably takes the combined action of hundreds or thousands of genes to produce a wing or leg. how can a change in just one gene cause such a big change in the body? bolditalicunderline
A change in a single gene can trigger a chain reaction of genetic events that result in significant alterations that can result in an extra pair of legs or wings in the body of a fruit fly.
A mutation in a single gene may cause a major change. However, it may take the combined action of hundreds or thousands of genes to create a wing or leg. A mutation in a specific gene can cause cascading impacts that activate or deactivate various genes in a pathway or network, resulting in significant modifications to a body part or behavior. For example, the wingless gene in fruit flies can cause the absence of wings. The fruit flies with the wingless gene mutation may lack some of the gene products required for wing formation or fail to produce any wings at all. Another gene, the Distal-less gene, is responsible for creating the proper limb structure for legs and wings. When the Distal-less gene is mutated, it can cause problems in limb formation that result in additional limb formation, such as extra legs or wings. A single gene mutation can cause significant changes in body parts if it is part of a series of genes involved in a particular process. The role of each gene in the development of an organism's morphology and function is also regulated by its placement in a network or pathway of genes. Mutations can trigger a chain reaction of genetic events that result in significant alterations. The amount of impact on a body part or behavior of a mutation is determined by the gene's place in the network and the strength and complexity of its interactions.Learn more about mutation: https://brainly.com/question/14438201
#SPJ11
Which of these environmental factors is least likely to disrupt a female's
reproductive cycle?
A. Birth control medication
B. Physical stress
C. Poor nutrition
D. Regular sleep habits
in missouri, the marbled salamander breeds in late fall (october-december). in the same region, the closely related spotted salamander breeds in early spring (february-march). thus, these species are kept separate because of:
The marbled salamander breeds in late fall and the closely related spotted salamander breeds in early spring in the same region are kept separate because of temporal isolation.
Temporаl isolаtion occurs when mаting between two closely relаted species, with overlаpping rаnge, is prevented due to the difference in the time of sexuаl mаturity. If behаviorаl isolаtion revolves аround the difference in mаting rituаls of species аnd mechаnicаl isolаtion аround the difference in their genitаliа, temporаl isolаtion revolves аround the difference in their time of sexuаl mаturity.
Simply put, the two species cаnnot mаte becаuse their breeding seаson doesn’t mаtch. Mаybe the two species breed in different seаsons - the marbled salamander breeds in late fall (October-December) and the closely related spotted salamander breeds in early spring (February-March).
For more information about temporal isolation refers to the link: https://brainly.com/question/29335383
#SPJ11
3. cartilage is separated from surrounding tissues by a fibrous a. perichondrium b. lacunae c. canaliculi d. matrix e. periosteum
Cartilage is separated from surrounding tissues by a fibrous "a. perichondrium."
Cartilage is the strong, flexible, and semi-transparent connective tissue that can be found in numerous parts of the human body. Perichondrium is the outermost layer of the cartilage that covers it and separates it from surrounding tissues. The cartilage cells that produce and maintain the matrix are known as chondroblasts. As the cells become embedded in the matrix, they become chondrocytes, which are the cells that continue to maintain the matrix for the life of the cartilage.
The perichondrium is a fibrous layer that separates cartilage from surrounding tissues. It is made up of two layers, the outer layer being fibrous and the inner layer being cellular. The perichondrium provides cartilage with oxygen and nutrients, allowing it to grow and repair itself. The periosteum, which is found on the outer surface of the bone, is made up of two layers: an outer fibrous layer and an inner osteogenic layer. The periosteum provides an attachment point for tendons and ligaments and is also involved in bone growth and repair.
Learn more about cartilage at brainly.com/question/21192006
#SPJ11
while the ph of saliva ranges from 6.5 to 11.5, the ph in the stomach is about ph 2. what would you expect the optimum ph to be for the enzymes secreted into your stomach that digest proteins into amino acids? what would you expect the optimum ph to be for the salivary enzyme amylase, which digests starches into sugars?
The optimal pH for enzymes secreted into the stomach that digest proteins into amino acids would be pH 2. The optimal pH for the salivary enzyme amylase, which digests starches into sugars, is pH 7.
The term pH is used to describe the acidity or alkalinity of a solution. The pH scale ranges from 0 to 14, with 0 being the most acidic and 14 being the most alkaline. pH has a significant impact on enzyme activity, and enzymes are essential in many physiological processes in our bodies, including digestion.
To break down food, the body uses different enzymes. Different enzymes work best at different pH levels, so the body must maintain the pH of each organ or compartment within a particular range to optimize enzyme activity.
Saliva is a digestive juice secreted by salivary glands in the mouth, which helps in the digestion of food. The salivary enzyme amylase, which digests starches into sugars, works best in a slightly acidic pH of around 7.0.
The stomach is a muscular organ that secretes a mixture of digestive juices called gastric juice. The pH of gastric juice in the stomach is very acidic, typically ranging from 1.5 to 3.5. Pepsin, a digestive enzyme that breaks down proteins into smaller peptides, works best in this low-pH environment. Pepsinogen, the precursor to pepsin, is also produced in the stomach and requires a low pH for activation.
Learn more about pepsin at https://brainly.com/question/15604041
#SPJ11
factors that aid venous return include all except . group of answer choices urinary output pressure changes in the thorax activity of skeletal muscles venous valves
Factors that aid venous return include all except a. urinary output.
The blood circulatory system in the human body is responsible for the supply of oxygen to tissues and the removal of carbon dioxide from the body. Blood flow through veins and capillaries is slower than blood flow through arteries. Venous return is the volume of blood returned to the heart per unit time from the periphery. It is determined by two factors that are the pressure difference between the peripheral venous system and the right atrium and the resistance to blood flow between the two sites.
Pressure changes in the thorax is factors that aid venous return, the pressure difference between the right atrium and the peripheral veins is increased when the intrathoracic pressure decreases during inspiration. It promotes venous return by increasing the pressure gradient between the peripheral veins and the right atrium. Activity of skeletal muscles also factors that aid venous return, the contraction of skeletal muscles causes the peripheral veins to compress and blood to be forced to the heart. The last factors that aid venous return is venous valves, valves in peripheral veins prevent backflow of blood in the veins due to gravity, the valves ensure blood flow in the correct direction. Thus, all the factors aid venous return except urinary output.
Learn more about skeletal muscles at:
https://brainly.com/question/8313215
#SPJ11
DNA gives each cell its identity. DNA is the ______ that codes for all necessary components within the cell and allows the cell to ___________
DNA is the genetic material that codes for every component a cell needs to function and divide properly. DNA also enables a cell to carry out its duties.
What all does DNA use to write for?Our individual genetic blueprint is found in a lengthy molecule called DNA, also known as deoxyribonucleic acid. It contains the directions for generating every protein in our cells, much like a recipe book.
Which DNA molecule's information-coding region is present?The base is the region of the nucleotide that codes for genetic material. A sugar, a phosphate group, and a base make up each nucleotide. Deoxyribose is the name of the sugar found in DNA.
To know more about DNA visit:-
https://brainly.com/question/264225
#SPJ9
Which of the following is an example of an environmental or selective pressure that could cause a species to evolve?
A. Air pressure in the atmosphere
B. lake that’s gradually running out of water
C. fight between two members of the same species.
Answer:
C. fight between two members of the same species.
Explanation:
A lake that's gradually running out of water is an example of an environmental or selective pressure that could cause a species to evolve. As the water level decreases, the species living in the lake will have to adapt to the changing conditions, which could lead to evolution. Species that cannot adapt to the changing environment will either die out or migrate to other areas.
how does spirogyra (or other protists) benefit from being able to reproduce by both asexual and sexual reproduction?
Spirogyra is a type of protist that can reproduce both sexually and asexually. Sexual reproduction increases genetic diversity, while asexual reproduction increases the population size.
Sexual reproduction enables Spirogyra to exchange genetic information between individuals, which increases genetic diversity. This allows them to adapt more quickly to changing environmental conditions and better resist predators or competitors.
Asexual reproduction is advantageous because it can occur quickly, allowing for a rapid increase in the population size. This is beneficial for survival as it increases the chances of finding a favorable habitat. Additionally, it enables Spirogyra to reproduce when resources are scarce or when environmental conditions are unfavorable for sexual reproduction.
Overall, sexual and asexual reproduction both provide important benefits to Spirogyra. Sexual reproduction increases genetic diversity, while asexual reproduction increases the population size. Both of these strategies can increase the chance of survival of Spirogyra, allowing it to thrive in its environment.
For more such questions on Spirogyra.
https://brainly.com/question/21348113#
#SPJ11
which of the following is a false statement? group of answer choices fertility largely determines a population's age structure. the age-sex structure of a population partially determines how many births it will produce. fertility does not contribute to population growth. fertility change can create its own momentum via the age structure.
The false statement among the given options is C. "Fertility does not contribute to population growth."
Fertility plays a crucial role in population growth as it directly affects the number of births within a population. A population's age structure is indeed largely determined by fertility (Option A). High fertility rates can lead to a large proportion of young individuals in a population, whereas low fertility rates can result in an aging population. This age structure, in turn, affects the population's potential for growth.
Option B is also true because the age-sex structure of a population influences the number of births it will produce. In a population with a high proportion of individuals of reproductive age, there will generally be more births, whereas a population with a smaller proportion of individuals in this age group will produce fewer births. The age-sex structure also affects the dependency ratio, which is the proportion of dependents (children and elderly) to working-age individuals. This ratio has significant implications for a society's economy and welfare systems.
Lastly, Option D is true as well. Fertility changes can create their own momentum via the age structure. When fertility declines, the proportion of individuals in younger age groups decreases, leading to fewer people of reproductive age in the future. This can slow down population growth, even if fertility rates were to increase again later on. Conversely, an increase in fertility can lead to a higher proportion of young individuals in the population, creating a momentum for population growth as these individuals enter their reproductive years. Therefore, the correct option is C.
The question was incomplete, Find the full content below:
which of the following is a false statement?
A. fertility largely determines a population's age structure
B. the age-sex structure of a population partially determines how many births it will produce.
C fertility does not contribute to population growth
D. fertility change can create its own momentum via the age structure.
Know more about Fertility here:
https://brainly.com/question/29971065
#SPJ11
How long is an average life cycle for a rotifer?
5 to 45 days
5 to 45 months
5 to 45 years
5 to 45 weeks
The average life cycle for a rotifer is 5 to 45 days. This means that from the time of birth to the time of death, the rotifer can live anywhere within this range, but on average their lifespan falls within this timeframe. Rotifers are small aquatic animals that reproduce quickly and have a short lifespan. Their lifespan can vary based on factors such as environmental conditions and food supply. However, in general, they live for a relatively short period compared to other organisms like humans who have a lifespan of decades....
ᕙ(＠°▽°＠)ᕗ
true or false? an organism that is radially symmetric has many well-developed head regions.
The given statement "an organism that is radially symmetric has many well-developed head regions" is false because in radially symmetric organisms the head region is not well-developed.
An organism that is radially symmetric does not have many well-developed head regions. Radial symmetry is a kind of symmetry in which the body is arranged radially, i.e., arranged in such a manner that there are equal halves that spread out from the center. Cnidarians and echinoderms are examples of animals that have radial symmetry.
The organisms that have radial symmetry, unlike those that have bilateral symmetry, do not have well-developed head regions. Radial symmetry, in contrast to bilateral symmetry, allows for equally distributed feeding from any point on the body's surface, which makes sense for animals that are sessile or free-floating in their aquatic environment. Therefore, an organism with radial symmetry does not have many well-developed head regions.
Thus, the statement is false.
Read more about "Radial symmetry"; https://brainly.com/question/20350476
#SPJ11
describe the difference between species richness and species evenness. how are each calculated? can an ecosystem have a high richness and low evenness and vice versa?
Species richness is a measure of the number of species present in an ecosystem while species evenness is a measure of how evenly the abundance of each species is distributed.
Species richness is calculated by counting the number of species present in a certain area while species evenness is calculated by comparing the relative abundance of each species. Yes, an ecosystem can have a high richness and low evenness, or a low richness and high evenness.
Species richness is a measure of the number of different species present in an ecosystem. This can be calculated by counting the number of different species in a certain area. Species evenness, on the other hand, is a measure of how evenly the abundance of each species is distributed.
This can be calculated by comparing the relative abundance of each species, such as by looking at the ratio of each species’ abundance. In an ecosystem with a high species richness and a low species evenness, this means that the number of different species present is high, but the abundance of each species is not evenly distributed. Conversely, in an ecosystem with a low species richness and a high species evenness, the number of different species present is low, but the abundance of each species is more evenly distributed.
To know more about Species richness click on below link:
https://brainly.com/question/14020242#
#SPJ11
the ac transposase gene consists of a single orf (open reading frame) comprised of exons and introns?
The AC transposase gene consists of a single ORF (open reading frame) composed of four exons and three introns. An ORF is a continuous sequence of DNA nucleotides that encodes a functional polypeptide chain or protein. An exon is a protein-coding nucleotide sequence within a gene that encodes the genetic code for the protein. An intron is a non-coding segment of DNA found between exons that does not encode a protein. In other words, an intron is a sequence of DNA that does not participate in the formation of a protein.
The AC transposase gene is a specific DNA sequence that encodes for the transposase protein in maize. The Ac element is a class II transposable element found in the maize genome. The Ac transposase is the protein encoded by the AC transposase gene. The Ac transposase protein is a member of the larger family of transposases. It is responsible for the mobilization of the Ac transposable element from one location in the maize genome to another by cleaving and rejoining DNA sequences. The AC transposase gene consists of a single ORF composed of four exons and three introns.
Here you can learn more about AC transposase gene
https://brainly.com/question/12294587#
#SPJ11
as exercise intensity increases, there is a progressive increase in the reliance of carbohydrate metabolism in the exercising skeletal muscles. this fact has been described as the
The fact that as exercise intensity increases, there is a progressive increase in the reliance on carbohydrate metabolism in the exercising skeletal muscles has been described as the energy continuum theory.
Energy continuum theory states that as exercise intensity increases, the body shifts from relying primarily on fatty acids for energy to primarily relying on carbohydrates for energy. In skeletal muscles, glycogen stores are broken down to provide energy, which is then used to power muscle contraction. Therefore, increased reliance on carbohydrate metabolism during exercise allows for higher intensity and longer duration of exercise. This fact has been described as carbohydrate oxidation or carbohydrate catabolism. Carbohydrate metabolism refers to the breakdown of carbohydrates in the body to produce energy. Carbohydrates are one of the primary sources of energy for the body. It is important to note that carbohydrates are stored in the body as glycogen in the liver and muscles. When the body needs energy, glycogen is converted into glucose and enters the bloodstream to provide the necessary energy. When exercising, the body demands more energy, which means that the rate of metabolism increases to provide energy. As exercise intensity increases, the body relies more on carbohydrate metabolism, and it provides the necessary energy to meet the demands of the exercising skeletal muscles. The faster the carbohydrate metabolism, the more energy is produced, and the muscles can continue to perform during the exercise. When there is a depletion of glycogen in the muscles, there is fatigue, and the performance of the muscles deteriorates. Therefore, it is important to maintain glycogen levels in the muscles to maintain optimal performance during exercise.Learn more about metabolism: https://brainly.com/question/1490181
#SPJ11
What causes the earth's cycle of day and night?
Select the words from the drop-down menus to correctly complete the explanation. IT'S SCIENCE NOT BIOLIGY!
The earth
Choose...
around its axis, which is an imaginary line
Choose...
. At any given moment, half of the earth faces
Choose...
the sun and has daytime, while the other half of the earth faces
Choose...
the sun and has nighttime.
Answer:The earth
rotates
around its axis, which is an imaginary line between the North and South Poles. At any given moment, half of the earth faces the sun and has
daytime, while the other half of the earth faces away from the sun and has nighttime.
Explanation: I took the test
polar bodies are cell structures that are typically found inside an ovum. true or false
Answer: yes
Explanation: the polar body is small haploid cell that is creaat t the same time egg cell during oo genesis but generally doesnot have to fertilize
Which is not a major component of plasma membranes?
select all that apply select all the habitats where one could expect to find archaea or bacteria. multiple select question. very high in the atmosphere hot springs sterilized surfaces in the deepest parts of oceans intestines of animals
The habitats where one could expect to find archaea or bacteria are
intestines of аnimаlsin the deepest pаrts of oceаnshot springsvery high in the аtmosphereDNА sequence compаrisons аnd structurаl аnd biochemicаl compаrisons consistently cаtegorize аll living orgаnisms into 3 primаry domаins: Bаcteriа, Аrchаeа, аnd Eukаryа (аlso cаlled Eukаryotes; these terms cаn be used interchаngeаbly).
Prokаryotes, especiаlly Аrchаeа, cаn survive in extreme environments thаt аre inhospitаble for most living things. They can survive in intestines of аnimаls, in the deepest pаrts of oceаns, hot springs, and very high in the аtmosphere. Prokаryotes hаve been аnd аre аble to live in every environment by using whаtever energy аnd cаrbon sources аre аvаilаble.
For more information about archaea refers to the link: https://brainly.com/question/1475001
#SPJ11
assume that ptosis (droopy eyelid) is inherited as an autosomal dominant human trait. among 100 people who are known to be heterozygous for the ptosis allele, 80 have ptosis and 20 have normal eyelids. what is the penetrance for ptosis?
The penetrance of ptosis in this population is 80%. This means that 80% of individuals carrying the ptosis allele express the phenotype associated with it.
Penetrance = (Number of individuals with ptosis)/(Total number of individuals carrying the ptosis allele)
Penetrance = 80/100
Penetrance = 0.8
Phenotype refers to the observable physical and biochemical characteristics of an organism, which result from the interaction of its genetic makeup (genotype) with environmental factors. These characteristics include traits such as eye color, height, behavior, and susceptibility to certain diseases.
Phenotypes are important in understanding how traits are inherited and how they evolve over time. Scientists study phenotypes to learn about the underlying genetic and environmental factors that contribute to the expression of certain traits. By understanding how phenotypes are inherited, scientists can make predictions about the likelihood of certain traits appearing in future generations.
To learn more about Phenotype visit here:
brainly.com/question/28447708
#SPJ4
which of the following is not a function of cholecystokinin (cck)? which of the following is not a function of cholecystokinin (cck)? increase production of pancreatic juice increase production of stomach acid open hepatopancreatic sphincter stimulate gallbladder to release bile
Increased generation of stomach acid is not one of cholecystokinin's (CCK) functions.
Which of the following cholecystokinin CCK functions is true?This hormone's effects on hunger and digestion are the most well-known. It enhances digestion by delaying the stomach's emptying of meals and promoting both bile production in the liver and bile release from the gall bladder.
What use does cholecystokinin serve?The digestive system's peptide hormone cholecystokinin is in charge of promoting the breakdown of fat and protein. It is produced by a cell in the small intestine's epithelium, and it is secreted in the duodenum. It triggers the gallbladder to release bile and digesting enzymes from the pancreas.
To know more about cholecystokinin's visit:-
https://brainly.com/question/14577951
#SPJ1
which of the following statements about blood is true? question 7 options: blood is about 92 percent water. blood is slightly more acidic than water. blood is slightly more viscous than water. blood is slightly more salty than seawater.
The statement about blood that is true is that the blood is about 92 percent water.
Blood is about 92 percent water. This means that most of its mass is composed of water, and that it has a similar chemical makeup as water. Blood is also slightly more acidic than water, with a pH of 7.35-7.45. It is also slightly more viscous than water, meaning it has a thicker consistency. Finally, blood is slightly more salty than seawater. This is due to the presence of electrolytes and other elements in the blood, such as sodium, potassium, and chloride.
Overall, these characteristics of blood provide it with the unique properties it needs to fulfill its purpose in the human body. Water, electrolytes, and other chemicals present in the blood are used to maintain pH balance, provide nutrients to the body, and carry away waste products.
Learn more about blood here: https://brainly.com/question/920424
#SPJ11
why do you think some cells use mitosis while others use meiosis? consider the overall function of these two processes in your answer.
Mitosis is a process of cell division in which a single cell divides into two identical daughter cells. It is used by the body to create new cells for growth and repair, as well as to replace damaged or old cells. Meiosis, on the other hand, is a process of cell division in which a single cell divides into four different haploid daughter cells.
Some cells use mitosis while others use meiosis because of the unique features of these two processes and their overall functions. Mitosis and meiosis are two types of cell division processes in eukaryotic cells. Both of these processes involve cell division, but they have different functions. Mitosis is used in somatic cells, which make up the majority of our body's cells. Meiosis is used in gametes, such as eggs and sperm, to ensure genetic diversity and to create offspring. Meiosis occurs only in reproductive cells such as gametes. So, the overall function of mitosis is to create identical copies of a cell, while the function of meiosis is to create genetically diverse gametes for reproduction. The decision to use mitosis or meiosis depends on the type of cell, and the function it serves.Learn more about mitosis: https://brainly.com/question/23750975
#SPJ11
what type of protein binds to silencers to prevent gene expression from occurring? what type of protein binds to silencers to prevent gene expression from occurring? repressors promoters enhancers rna polymerase
Answer: repressors
Explanation: