Because cilia cannot function properly, smokers have a frequent headache.
True
Answers
Answer:
Explanation:
The cilia sweep out mucus and dirt so your lungs stay clear. Smoking temporarily paralyzes and even kills cilia. This makes you more at risk for infection. Smokers get more colds and respiratory infections than non-smokers.
Because cilia cannot function properly, smokers having a frequent headache is a true statement.
What is Cilia?These are tiny hair projections which are found in the airway of the body and helps to prevent dust or foreign matter from getting to the lungs.
Smoking destroys it and leads to insufficient oxygen inhaled by the body as a result of presence of contaminants which may therefore lead to headache.
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Related Questions
How does farming up the food web reduce total amount of fish to
eat?
Answers
Farming up of food web reduces the amount of fish to eat due to the cultivation of higher tropic levels.
The presence of higher tropic levels leads to the consumption of the existing fish in the aquatic ecosystem. Leveling up of trophic levels requires a higher amount of organic matter which will lead to the depletion of fish living in the ecosystem. This process ultimately leads to a reduction in the total amount of fish to eat.
A food web is a combination of all the food chains in the ecosystem. Every organism has its place in the food web in the form of a trophic level. It starts with minimum energy and goes on to a higher tropic level with maximum energy.
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Part A Which of the following species traits might affect the community that develops? Select all that apply. constitutive defense O good dispersal ability rapid reproduction mimicry O rapid growth tolerance for severe conditions Submit Request Answer Part B Complete previous part(s)
Answers
The following species traits might affect the community that develops: Constitutive defense, Good dispersal ability, Rapid reproduction, Mimicry, and Rapid growth.
Species with strong constitutive defense mechanisms can influence the interactions and dynamics within a community by deterring or repelling potential predators or competitors.
Species with good dispersal ability can colonize new areas and potentially influence the composition and distribution of species within a community.
Species with rapid reproduction rates can increase their population size quickly, potentially outcompeting other species for resources and altering community dynamics.
Species that exhibit mimicry can deceive predators or gain an advantage by resembling another species, which can impact predator-prey interactions and community structure.
Species with rapid growth rates can quickly utilize available resources and potentially outcompete slower-growing species, influencing community composition.
Therefore, the following species traits might affect the community that develops: Constitutive defense, Good dispersal ability, Rapid reproduction, Mimicry, and Rapid growth.
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what cells make up the visceral capillaries of the glomerulus?
Answers
The glomerular capillaries, also known as the visceral capillaries of the glomerulus, are made up of specialized endothelial cells called glomerular endothelial cells.
Glomerular capillariesLittle fenestrations or pores in these cells allow blood to filter into the into the Bowman's capsule.Podocytes, which are specialized cells that circle around the capillaries and create the inner layer of the glomerular filtration barrier, are present in the visceral capillaries in addition to the glomerular endothelial cells. The foot processes, which the podocytes' extensions have, interdigitate with one another, leaving tiny filtering slits between them. Water and tiny solutes like electrolytes, glucose, and amino acids can pass through these filtration slits and the fenestrations in the glomerular endothelial cells and into the Bowman's capsule.The kidneys are two bean-shaped organs that are situated directly below the ribs in the back of the abdominal cavity. They are a component of the urinary system and are in charge of removing waste and extra fluid from the blood in order to generate urine.
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which of these describes the function of enzymes?
A, Each enzyme catalyzes only one specific reaction
B, enzymes must constantly be replaced, as they are destroyed by the reaction that they catalyze
C, each enzyme can catalyze many different biological reactions
Answers
A ...............
.......
What is one property shared by the cells of all living organisms?
Answers
Organisms that have life and the fundamental characteristics necessary to be considered living are referred to as living organisms. This includes things like growth, reproduction, and irritability that are shared by the cells of all living organisms.
The main characteristic of a living thing can differentiate it from non-living things. Living things are things that are alive. Growth and reproduction are these properties. The cells that created all living matter are the living cells. Macromolecules comprise the living cell. The DNA and various cell organelles make up the cell.
DNA can be found in any living thing. Every organism's genetic differences are determined by it. Every cell has the same version.
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A colorimeter is an instrument used for chemical analysis by comparing a liquid's color with standard colors. In an experiment, a scientist used two
colorimeters and noted the readings. The first colorimeter showed consistent readings that were five points lower than the actual reading. The second
colorimeter provided readings that were the same as the actual reading. Which two statements are implications of these readings?
O
The first colorimeter is reliable but not valid.
The second colorimeter is valid and reliable
Both the colorimeters are reliable and valid
The readings of the first colorimeter can be used without repeating the experiment.
O
The readings of the second colorimeter aren't reliable and can't be used for the experiment.
Answers
The first colorimeter is reliable but not valid.
The second colorimeter is valid and reliable
1. A colorimeter is an instrument used for chemical analysis by comparing a liquid's color with standard colors.
2. In the experiment, the scientist used two colorimeters and noted the readings.
3. The first colorimeter consistently showed readings that were five points lower than the actual reading.
4. This implies that the first colorimeter is reliable because it consistently provides consistent readings. However, it is not valid because it consistently underestimates the actual reading by five points.
5. The second colorimeter provided readings that were the same as the actual reading.
6. This implies that the second colorimeter is both valid and reliable because it provides readings that are consistent with the actual reading.
7. Therefore, the two statements that can be concluded from these readings are:
a) The first colorimeter is reliable but not valid.
b) The second colorimeter is valid and reliable.
8. Since the first colorimeter consistently underestimates the actual reading, it may not be suitable for accurate analysis. Repeating the experiment with a different method or instrument would be necessary to obtain more valid results.
9. On the other hand, the readings from the second colorimeter can be considered reliable and used for the experiment since they match the actual reading. There is no need to repeat the experiment with a different instrument in this case.
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The first colorimeter is reliable (gives consistent readings) but not valid (readings are not accurate), while the second colorimeter is both valid and reliable (provides accurate and consistent readings).
Explanation:From the scenario described, the two accurate statements would be: 'The first colorimeter is reliable but not valid.' and 'The second colorimeter is valid and reliable.'
The first colorimeter consistently gives readings which are five points lower than the actual, which reveals that it is reliable (as it consistently shows the same error). However, it is not valid as it is not providing accurate measurements (i.e., the readings do not match the actual values).
Meanwhile, the second colorimeter is both valid (because it gives accurate measurements) and reliable (it consistently produces the same readings). Therefore, the second colorimeter can be used for the experiment without needing to repeat.
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Which of the following statements is TRUE?A. Transcription and translation are continuous processes in eukaryotes but not prokaryotesB. Transcription and translation are continuous processes in prokaryotes but not eukaryotesC. All of the processes occur in the same site in the cell for prokaryotes and eukaryotesD. mRNA is processed before translation in prokaryotes but not eukaryotesE. Transcription and translation are continuous processes in both eukaryotes and prokaryotes
Answers
Transcription and translation are processes that happens in both prokaryotes and eukaryotes, but in eukaryotic cells they take place in different sites than in prokaryotic cells. Therefore, C is incorrect.
In eukaryotic cells, the mRNA is extensively processed before it is ready to be translated, not in prokaryotic cells. Therefore, D is incorrect as well.
In eukaryotic cells, transcription and translation are separate processes, transcription takes place in the nucleus and translation takes place in the cytoplasm. In prokaryotic cells, transcription and translation both takes place in the cytoplasm, being a continuous process. Therefore, A is incorrect, E is wrong too and the correct answer is B. Transcription and translation are continuous processes in prokaryotes but not eukaryotes.
where is the guanine nucleotide-binding site of the g protein located?
Answers
The guanine nucleotide-binding site of the G protein is located on the alpha subunit of the protein.
The alpha subunit contains a conserved GTP-binding domain, also known as the G domain, which is responsible for binding to guanine nucleotides such as GDP and GTP. The G domain is located near the N-terminus of the alpha subunit and is comprised of several conserved motifs that are essential for nucleotide binding and hydrolysis.
When the G protein is activated by a G protein-coupled receptor (GPCR), GDP is exchanged for GTP at the guanine nucleotide-binding site, causing a conformational change in the alpha subunit and dissociation of the beta and gamma subunits. This allows the alpha subunit to interact with downstream effector proteins, leading to a variety of cellular responses. The guanine nucleotide-binding site is therefore a critical region of the G protein, as it regulates the activation and signaling of the protein in response to extracellular stimuli.
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21.As mentioned in the video, the environment can also affect an organism's traits. The example of nourishment was used in the case for Spike, as this could affect his growth and size. This can also occur in humans. UV light was not mentioned in the video. How could UV light potentially affect an organism's trait? Provide one example.
Answers
Answer:
UV light can modify the DNA of a human being, provoking mutations that affect the traits. For example, exposure to the sun's UV rays affects the DNA of the skin cells, causing mutations that can lead to cancer.
Explanation:
An environmental factor that can affect humans traits is the exposure to UV light that the sun radiates. The DNA in our skin cells absorbs the UV rays. As a result, the DNA can suffer modifications that result in skin cancer. Also, the absorption of UV rays causes wrinkles since cell components are affected due to the accumulation of UV light.
Answer: UV light can modify the DNA of a human being, provoking mutations that affect the traits. For example, exposure to the sun's UV rays affects the DNA of the skin cells, causing mutations that can lead to cancer.
Explanation: An environmental factor that can affect humans traits is the exposure to UV light that the sun radiates. The DNA in our skin cells absorbs the UV rays. As a result, the DNA can suffer modifications that result in skin cancer. Also, the absorption of UV rays causes wrinkles since cell components are affected due to the accumulation of UV light.
According to slide 12, what is the relationship between opportunistic infections and the number of T cells a person has? Explain with science from the lecture given.
Answers
Answer:
The fewer number of T cells a person has, the more chances to be affected by an opportunistic infection. When the number of T cells reaches 200 cells/µl, the person is at risk of being infected by other infections.
Explanation:
The whole immune system of a person who is infected with HIV infection seems to be severely affected. When the person is not treated or the disease is in a very advanced stage, the depletion of the T- cells turns to be very sharped, especially CD4+ T cells. At this point, the immune system can not resist the attack of other microorganisms. The lower is the number of CD4+ T Cells, the higher possibility the person has to be attacked by opportunistic infections.
Classically, it has been suggested that opportunistic infections appear after the CD4 + T lymphocytes reach very low levels, such as 200 cells/µl. The number of circulating T cells can be used as an indicator and a measure of global "immune competence", and the previously mentioned amount of CD4 + T cells is an accepted universal reference used to predict the risk of having one of these opportunistic infections.
freshwater fish excrete nitrogenous wastes as _____.
Answers
Which DNA fingerprinting technique examines the length variation of DNA repeat sequences in human DNA?
Answers
The DNA fingerprinting technique that examines the length variation of DNA repeat sequences in human DNA is called Variable Number Tandem Repeat (VNTR) analysis.
VNTRs are DNA regions that comprise short, repeating nucleotide sequences. Because the number of repeats at a specific VNTR locus can differ between people, it is a useful tool for DNA profiling.
VNTR research entails amplifying VNTR regions with PCR and then sorting the amplified fragments by size with gel electrophoresis.
Unique DNA profiles can be produced by comparing the size and number of amplified fragments between different people, which can then be used for identification and other purposes.
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What is the probability of an offspring that will be Heterozygous A. 0% B. 100% C. Less than 10% D. 75%
Answers
Answer:
The Punnett square below makes it clear that at each birth, there will be a 25% chance of you having a normal homozygous (AA) child, a 50% chance of a healthy heterozygous (Aa) carrier child like you and your mate, and a 25% chance of a homozygous recessive (aa) child who probably will eventually die from this ...
Which statement(s) is/are indicative of a covalent bond?
1) Electron movement is concentrated somewhere between the two bonded nuclei.
II) Electron density is focused on one element in the bond, generally resulting in the formation of a crystalline substance.
III) The greatest probability of finding the shared electrons is in the area of orbital overlap.
IV) The valence electrons involved in the bond are moving solely around the nucleus of the atom with the higher electron affinity.
es )
I and II
ll and I
I and III
I, III and IV
An substance for a crystalline is NaCl
Answers
Answer:
The statements which are indicative of a covalent bond are as follows -:
Electron movement is concentrated somewhere between the two bonded nuclei.The greatest probability of finding the shared electrons is in the area of orbital overlap.The valence electrons involved in the bond are moving solely around the nucleus of the atom with the higher electron affinity.Explanation:
Among the given four statements, three statements are correct, the statement- "Electron density is focused on one element in the bond, generally resulting in the formation of a crystalline substance." is incorrect as In ionic bonds, crystalline formation takes place.
Somewhere between the two bonded nuclei, electron movement is centered. --: Covalent bonds are a class of chemical bonds in which valence electrons are shared between two atoms, typically two non-metals. The formation of a covalent bond helps the non-metals to obey the octet 's law and thus become more stable.The greatest probability of finding the shared electrons is in the area of orbital overlap.-: A pi bond (π bond) is a type of covalent bond arising from the overlap of two p orbitals side by side.The valence electrons involved in the bond are moving solely around the nucleus of the atom with the higher electron affinity.- : As pairs of electrons are exchanged by atoms, covalent bonding happens. In order to achieve further stability, which is gained by forming a complete electron shell, atoms can covalently bond with other atoms. Atoms can fill their outer electron shell and achieve stability by exchanging their outermost (valence) electrons.Hence , the correct option is D (I,II and IV )We know that for example stem Bromelain has an enzymatic activity of 0.542 U/mg and there are 20 billion bacteria in our teeth. Calculate how long does Bromelain take to degrade all of the biofilm created by the bacteria using this rule : a) Any assumptions must be written as "(Assumption)". Plus point for those who tell me why they choose that assumption b) Any other data gained from other sources must be written specifically. If it is a book, you can just write the title of the book and the page. If it is a source/website/journal, just write the title of it. c) If you write other data without stating that it is assumption or obtained from other sources, I assume that you create data by yourself without knowing anything!!
Answers
Given that Stem Bromelain has an enzymatic activity of 0.542 U/mg, and there are 20 billion bacteria in our teeth. We need to calculate how long it takes to degrade all of the biofilm created by the bacteria.Assumptions and explanations used in the calculation: Assumption: The mass of the biofilm is not given. Therefore, it is assumed that the biofilm's mass is 1 mg, as the enzymatic activity of bromelain is provided per mg. If the biofilm's mass is different, the result will be different.
We know the enzymatic activity of bromelain, which is 0.542 U/mg.We are given that the number of bacteria in our teeth is 20 billion. The biofilm is created by these bacteria. Bromelain is supposed to degrade the biofilm. Therefore, we need to calculate the mass of the biofilm. The mass of the biofilm is assumed to be 1 mg, as the enzymatic activity of bromelain is given per mg.Now we can use the given data to calculate the time required for bromelain to degrade all of the biofilms created by the bacteria.First, we need to find the total enzymatic activity required to degrade the biofilm. The mass of the biofilm is assumed to be 1 mg.Enzymatic activity of bromelain = 0.542 U/mgTotal enzymatic activity required to degrade 1 mg biofilm= 0.542 U/mg × 1 mg= 0.542 UThe total enzymatic activity required to degrade the biofilm created by the 20 billion bacteria is:Total enzymatic activity required= Enzymatic activity per bacteria × Total number of bacteria= 0.542 U/mg × 20 billion= 1.084 × 10^10 UTo find out how long it takes for bromelain to degrade all of the biofilm, we need to know the rate of degradation. The rate of degradation depends on various factors, such as temperature, pH, etc., which are not provided in the question. Therefore, it is impossible to calculate the time required for bromelain to degrade all of the biofilms created by the bacteria without knowing the rate of degradation. Thus, the answer cannot be calculated.
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how long does the natural process of blocking open dentinal tubules on exposed (open) dentinal tubules usually take? group of answer choices a) 24 hours b) a few weeks c) 3 months d) 6 months
Answers
The natural process of blocking open dentinal tubules on exposed (open) dentinal tubules usually take D. A few weeks
In 20 to 45 percent of patients, hypersensitivity goes away on its own within four to eight weeks when there is no actual tooth damage, such as chipped enamel. After root planing, dental hypersensitivity typically subsides in two to three weeks.
Attrition, abrasion, erosion, and abfraction expose dentinal tubules in the first phase as a result of enamel loss. However, gingival recession and the loss of cementum on the root surfaces of canines and premolars in the buccal surface are the primary causes of dentinal exposure.
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Identify Draw arrows that point to the location of the chemical bonds
in the water molecule. (Hint: The oxygen atom is red, and the hydrogen
atoms are blue
Answers
Answer:
H2O
Explanation:
Dihydrogen monoxide
2 hydrogen= Dihydrogen
1 Oxygen= monoxide
It is an IONIC BOND!
as the two anatomical divisions of the adrenal gland, the adrenal cortex and adrenal medulla share a common feature in that both: a. synthesize steroid hormones. b. release signaling molecules into lymph vessels. c. regulate the synthesis of red blood cells. d. secrete hormones that alter blood pressure.
Answers
The adrenal cortex and adrenal medulla, the two physical divisions of the adrenal gland, have something in common in that they both release hormones that affect blood pressure. Here option D is the correct answer.
The adrenal cortex and adrenal medulla are two distinct anatomical divisions of the adrenal gland, each with its own specific functions. The adrenal cortex, which is the outer layer of the gland, produces a variety of steroid hormones, including cortisol, aldosterone, and androgens.
The adrenal medulla, on the other hand, is the innermost layer of the gland and is responsible for the production and secretion of catecholamines, such as adrenaline and noradrenaline. These hormones play a key role in the regulation of blood pressure and the body's response to stress.
Both the adrenal cortex and adrenal medulla secrete hormones that alter blood pressure, although they do so through different mechanisms.
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Nuclear fission occurs when a neutron strikes the nucleus of a uranium-235
atom. The illustration models the chain reaction that can result.
Which statement describes how a chain reaction results from the nuclear
fission of uranium-235?
Answers
The correct order of steps for nuclear fission involving uranium-235 is: A neutron hits a uranium-235 atom (III), uranium-235 becomes an unstable uranium-236 atom (II), and uranium-236 changes to less massive elements (I), So the order is III-II-I.
What is uranium-235?
Here ,when a neutron hits a uranium-235 atom, it causes the uranium-235 to become an unstable uranium-236 atom, and the unstable uranium-236 atom then undergoes fission, resulting in the formation of two smaller atoms that release energy.
Hence, the correct order of steps for nuclear fission involving uranium-235 is: A neutron hits a uranium-235 atom (III), uranium-235 becomes an unstable uranium-236 atom (II), and uranium-236 changes to less massive elements (I), So the order is III-II-I.
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The question is incomplete, the complete question is below,
Nuclear fission occurs when a neutron strikes the nucleus of a uranium-235 atom. The illustration models the chain reaction that can result.
What is the correct order of steps for this process? I. Uranium-236 changes to less massive elements, releasing energy and three additional neutrons. II. Uranium-235 becomes an unstable uranium-236 atom. III. A neutron hits a uranium-235 atom.
What two colors of peas did Gregor Mendel breed first (F1 – first generation)? PLEASE HELP
Answers
Answer:
Yelloe and greem color pea is choosed by mendel for First fillial generation
In geothermal power systems temperature and pressure inside Earth ____ with depth
A. Increase
B. Decrease
help me help me help me help me help me help me help me help me help me help me
Answers
Answer:
A
Explanation:
am not to sure but it mostly likely is hopefully this helps you
In an anole population, what are the primary changes that occur over time?
Answers
In an anole population, the primary changes that occur over time are driven by natural selection. These changes can be observed in various traits such as body size, coloration, and behavior.
For example, in response to predation pressure, anoles may evolve larger body sizes to avoid being preyed upon. Similarly, changes in coloration can occur to blend in better with their environment, providing camouflage and protection from predators. Behavioral changes can also occur, such as changes in mating rituals or territorial behaviors, which can improve the chances of survival and successful reproduction.
These changes can occur over generations as individuals with advantageous traits are more likely to survive and pass on their genes. Overall, natural selection plays a significant role in shaping an anole population over time.
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A book on a table has _______ potential energy than a book on a chair because the table is ________ off the ground.
Answers
Answer:
A book on a table has more potential energy than a book on a chair because the table is higher off the ground.
Explanation:
Feel free to correct me If i'm wrong :)
Answer:
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Which of the following types of organelle is most important in providing a cell with energy?
A.
mitochondria
B.
nuclei
C.
cell membranes
Answers
Answer: A-: Mitochondria
Explanation: It is also known as powerhouse of the cell. It produces ATP (Adenosine triphosphate). Mitochondria is having double layer of cell membrane enclosing the cytoplasm.
Which of these changes produces a chemical change?
A. Lava cools and changes from a thick fluid to solid rock.
B. A large rock is crushed into gravel,
C. Limestone slowly dissolves in water and forms a cave,
D. A stone fizzes and forms a gas when acid is dropped on it.
Answers
Answer:
b
dissolving is a chemical change
how does plant mitosis accommodate a rigid inflexible cell wall
Answers
Answer:
mitosis animal y vegetal son dos tipos de divisiones nucleares reproductivas en animales y plantas, respectivamente. Durante la mitosis, la cantidad de material genético permanece igual. Por lo tanto, aumenta el número de células en el cuerpo durante el crecimiento, la reparación y la regeneración. La mitosis ocurre en cuatro pasos principales; Profase, metafase, anafase y telofase. los diferencia principal Entre la mitosis animal y la mitosis vegetal es que el huso mitótico en la mitosis animal se forma con la ayuda de dos centriolos, mientras que el huso mitótico en la mitosis vegetal se forma sin ningún centríolo. La mitosis es seguida por citocinesis
Explanation:mira
at what sucrose molarity does the curve cross the zero change line on the graph
Answers
To determine the sucrose molarity at which the curve crosses the zero change line on a graph, specific data points or the equation of the curve would be necessary. Without this information, it is not possible to provide a precise answer.
In order to identify the sucrose molarity at which the curve crosses the zero change line on a graph, the graph itself or the equation describing the relationship between sucrose molarity and the observed changes would be required. The curve represents the relationship between two variables, and the point at which it intersects the zero change line indicates the specific value of sucrose molarity where there is no observed change. Without access to the graph or the equation, it is not feasible to determine the exact sucrose molarity. Therefore, additional information would be necessary to provide a specific answer to this question.
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Of the following traits that are associated with being human, which evolved most recently?
a. upright walking
b. ability to control fire
c. social communication
d. big brain
Answers
Of the following traits that are associated with being human, the one that evolved most recently is the ability to control fire. While upright walking, social communication, and a big brain are also important traits associated with being human, the ability to control fire is believed to have developed around 1.5 million years ago, which is relatively recent in terms of human evolution.
The trait that evolved most recently among the options provided is the ability to control fire (b). Upright walking, social communication, and the big brain evolved earlier in human history.
Upright walking, also known as bipedalism, is a defining trait of the human species. It refers to the ability to walk on two legs, with the torso upright and the feet supporting the body's weight.
Some key traits of upright walking include:
An S-shaped spine: Our spine has a unique S-shaped curve that helps to distribute weight evenly over our legs and feet while standing and walking.
Longer legs: Compared to our primate relatives, humans have longer legs relative to their body size. This helps to position our feet directly under our center of gravity, improving balance and stability.
Arched feet: The arches in our feet act like springs, absorbing shock and providing energy during each step.
Shorter arms: Unlike other primates, humans have shorter arms relative to their body size. This is because longer arms would interfere with our ability to walk upright.
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how do the different types of proteins in plasma membranes play a role in the different forms of transport of materials into and out of the cell g
Answers
Membrane proteins are involved in a variety of biological processes, including cell adhesion, energy transduction, signalling, cell recognition, and transport.
Hydrophilic molecules can pass through the cell membrane thanks to membrane proteins. Some transport membrane proteins require energy to change shape and actively move molecules and other substances across the cell membrane. They accomplish this by releasing ATP as an energy source. The proteins allow a cell to choose which compound will be transported, meeting the cell's needs while excluding anything else.
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Estrogen is responsible for the onset and continuation of labor.T/F?
Answers
Estrogen is responsible for the onset and continuation of labor is false.
Estrogen is not responsible for the onset and continuation of labor. Rather, a hormone called oxytocin plays a significant role in the onset and continuation of labor.The hormone oxytocin is produced by the hypothalamus and released by the pituitary gland. When the oxytocin hormone reaches the uterus, it causes contractions to begin. As labor progresses, the release of more oxytocin helps the contractions become stronger and more regular until the baby is born.
Therefore, estrogen is not responsible for the onset and continuation of labor, but oxytocin plays a significant role in it.
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