Answer:
Explanation:
As the liquid cools, it loses thermal energy. As a result, its particles slow down and come closer together. Attractive forces begin to trap particles, and the crystals of a solid begin to form.v
Answer: the average energy of the molecules decreases
Explanation:
2. On the islands of Hawaii, approximately 800 species of fruit flies have evolved from just one ancestral species over roughly 8 million years. The heads, forelegs, wings, and mouthparts of different species all look and function very differently.
How could so many species have evolved from one ancestral fruit fly species?
Due to the ____ from the first small population, the population's____ could have differed from the mainland fruit flies. The process of ____ resulted in adaptations and ____ of the island population into new fruit fly ____ over time. Some of the fruit flies traveled to other islands where they were ____ and evolved into more species.
Answer:
Due to the isolation from the first small population, the population's gene pool could have differed from the mainland fruit flies. The process of natural selection resulted in adaptations and speciation of the island population into new fruit fly species over time. Some of the fruit flies traveled to other islands where they were isolated and evolved into more species.
how could you determine whether the turbidity in your nutrient broth tube was from a mixture of different microbes or from the growth of only one kind of microbe
If all the bacteria in the culture are of the same gramme type, size, and shape, it can be determined by looking at a gramme stain of the culture under a microscope.
If this is the case, the bacteria are very certainly members of the same species; otherwise, they belong to distinct species. Transfer the cell sample to an agar-coated petri plate and observe to see whether various colonies develop. The presence of cloudiness in broths is a sign of bacterial proliferation. You won't be able to tell if the cloudiness of the freshly infected soup is the result of bacterial growth throughout the incubation period if it appears foggy at first.
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the collapse of ecosystems will not impact human welfare through what?
The collapse of ecosystems will NOT impact human welfare through Increased water quality.
The government's or other organisations' financial support is frequently linked to human wellbeing. But it goes farther than that. Human or social welfare, in its most basic definition, attempts to reduce poverty and suffering among the suffering people within a community. It's not always equivalent to offering financial support. All the species and the physical environment with which they interact make into an ecosystem (or ecological system),: 458 The nutrition cycles and energy fluxes connect these biotic and abiotic elements. Photosynthesis is how energy enters the system and is absorbed by plant tissue. Animals play a significant part in the transfer of materials and energy through the system by eating plants and one another.
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complete question:The collapse of ecosystems will NOT impact human welfare through what?A. Increased air pollution B. Increased medical expenses C. Increased water quality D. Increased food cost
suppose a genetic test shows that a woman has inherited the dominant brca1 allele that causes breast cancer. if she does not develop breast cancer in her lifetime, the phenomenon is called
The phenomenon in which a woman do not develop breast cancer in her lifetime even though she has has inherited the dominant brca1 allele that causes breast cancer is called penetrance.
Penetrance refers to the proportion of individuals with a particular genetic mutation who actually express the associated phenotype (in this case, breast cancer). Not all individuals who inherit a genetic mutation for a disease will necessarily develop the disease, and the likelihood of developing the disease is influenced by various factors such as lifestyle, environmental exposures, and other genetic factors. In the case of BRCA1, penetrance has been estimated to be between 60-85%.
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How does the liver produce bile?
Hepatocytes first secrete conjugate bilirubin, bile acids, lipids, sphingolipids, proteins, protons, or water into its canaliculi before beginning to generate bile.
How does the liver produce bile?In response to hydraulic gradients produced by the passage of electrolyte solutes into the liver canalicular lumen, bile is produced via filtration. Via solvent drag, water and other tiny solutes passively enter the biliary region.
What causes bile to be produced?Secretin induces the production of bile, which is then secreted into gallbladder where it becomes condensed and stored during fasting. Cholecystokinin is the main factor that stimulates the concentration of bile inside the gallbladder, with up to 90% of the fluid being absorbed within a 4-hour window.
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is the hexokinase reaction at equilibrium in cells? for the reaction catalyzed by the enzyme hexokinase the equilibrium constant, , is . in living e. coli cells, , , , and . is the reaction at equilibrium in e. coli?
The reaction catalyzed by the enzyme hexokinase (Glucose + ATP Glucose 6-phosphate + ADP) has an equilibrium constant of 7.8 x 102.
In living E. coli cells, the concentrations of ATP, ADP, glucose, and glucose-6-phosphate are 5 mM, 0.5 mM, 2 mM, and 1 mM respectively. This means that the reaction is not at equilibrium in E. coli cells, and that the reaction favors the side with ATP, ADP, and glucose.
The hexokinase reaction is an important enzyme-catalyzed reaction that is involved in many biochemical processes in cells. In this reaction, ATP is converted to ADP and glucose is converted to glucose-6-phosphate, with the release of energy. In living cells, the concentrations of ATP, ADP, glucose, and glucose-6-phosphate are carefully regulated to ensure that the reaction is kept at equilibrium.
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the taxon that shares the most recent common ancestor with lizards is frogs. group of answer choices true false
The taxon that shares a most recent common ancestor with lizards is the frog is False because lizards are a sister taxon to a lineage that includes humans and chimpanzees.
Taxonomy is a human invention by itself taxonomy cannot confirm the same lineage. However, along with other evidence, the taxonomic implicit in evolution is unmistakable.
In the taxonomic tree drawn, lizards are a sister taxon to a lineage that includes humans and hoards. The taxon with the most recent ancestor of frogs is fish. Frogs and humans are more distantly related than lizards and humans.
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what factors might result in a false negative test (that is, the food does contain a molecule but the tests results are negative
The factors that might result in false negative test results are the size of the sample, impurities in the sample, and other elements.
False-negative results are tests that claim a food does not contain a particular molecule when the food actually has. Some of the factors that affect food testing and giving false negative results are:
Size of the sample: This happens when the food samples analyzed are too large or too small.Impurities: The presence of impurities in the reagent might affect the reaction and gives a false-negative test result.Other elements: The presence of other elements in the sample might affect the actual reaction that occurs between the compound to be analyzed and the reagent.To know more about false-negative:
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Select the two comorbid disorders with which Pica occurs most commonly. A. Enuresis. B. Encopresis. C. Autism. D. Intellectual disability.
The two comorbid disorders with which Pica occurs most commonly are Intellectual Disability (D) and Autism (C).
Pica is a condition where an individual craves and eats non-food items, such as paper, chalk, or hair, that have no nutritional value. It is often seen in individuals with developmental and intellectual disabilities, and is also associated with several psychiatric and neurological disorders.
Both of these conditions are characterized by difficulties with social interaction, communication, and repetitive behaviors, which are also common features of Pica. Studies have shown that individuals with Intellectual Disability and Autism often engage in Pica behaviors as a way of coping with stress, anxiety, and sensory sensitivities.
Treatment for Pica is often focused on addressing the underlying conditions, such as Intellectual Disability or Autism, through the use of behavioral therapy, sensory integration techniques, and medication management. In addition, providing appropriate nutrition and education on the dangers of ingesting non-food items can be helpful in reducing the frequency and severity of Pica behaviors.
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9. why might abnormalities be harmful for individual amphibians? how might amphibian populations be affected by such abnormalities?
Changes in climate are not the only factor threatening amphibian populations.
Because their skin is transparent, amphibians are more vulnerable to pollution than other groups. As a result, poisons can enter crucial amphibian organs.
In comparison to humans, amphibians breathe at least partially through their skin, which is continually exposed to everything in their surroundings.
As a result, their bodies are far more vulnerable to environmental variables like disease, pollution, harmful chemicals, UV radiation, and habitat destruction.
Amphibians are excellent indicators of major environmental changes.
The global occurrences of amphibian losses and malformations may be an early indication that certain of our ecosystems, even those that appear to be pure, are badly out of balance.
These five variables, which also include atmospheric change, environmental pollutants, habitat loss, invasive species, and infections, are the most probably to have genuinely global effects on amphibian population decreases.
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The breaking and rearrangment of chemical bonds
Answer: where is the question?????
The phosphorylation of glucose to glucose 6-phosphate is the initial step in the catabolism of glucose. The direct phosphorylation of glucose by Pi is described by the equation Glucose + Pi → glucose 6-phosphate + H2O ΔG′e ° = 13.8 kJ/mol
Calculate the equilibrium constant for the above reaction at 25 °C. In the rat hepatocyte the physiological concentrations of glucose and Pi are maintained at approximately 4.8 mm. What is the equilibrium concentration of glucose 6-phosphate obtained by the direct phosphorylation of glucose by Pi? Does this reaction represent a reasonable metabolic step for the catabolism of glucose? Explain
Glutamate oxaloacetate, aspartate aminotransferase
(a) triose phosphate isomerase aspartate a-ketoglutarate K eq 6.8
(b) Phosphofructokinase: Dihydroxyacetone phosphate glyceraldehyde 3-phosphate K eq 0.0475
(c) ADP, Fructose 1,6-bisphosphate, and ATP are all forms of fructose.
The mass-action ratio is denoted as [products]/[reactants], where G G RT ln [products]/[reactants] is the formula. When at equilibrium, G 0 and Q K are equal, therefore
Where R = 8.315 J/mol K and T = 25 C 298 K, G RT ln K eq. We can calculate the G values from the K eq for each reaction using the value RT 2.48 kJ/mol.
G (2.48 kJ/mol) ln 6.8 4.8 kJ/mol (a) G (2.48 kJ/mol) ln 0.0475 7.56 kJ/mol (b) (c) ln 254 G (2.48 kJ/mol) 13.7 kJ/mol
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erythropoietin (epo) stimulates the developmental process shown here. what part of the body does erythropoietin (epo) target to increase erythropoiesis?
Erythropoietin (EPO) targets the bone marrow to increase erythropoiesis, which is the process of producing red blood cells.
EPO is a hormone produced by the kidneys in response to low oxygen levels in the blood. It stimulates the bone marrow to produce more red blood cells, which help to increase the amount of oxygen transported to the tissues. This helps to improve oxygenation and counteract the effects of low oxygen levels, such as fatigue and weakness.
In summary, EPO stimulates the bone marrow to increase erythropoiesis, which leads to the production of more red blood cells and improved oxygenation of the tissues.
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VOLCANIC ERUPTION:
People must work together and assist others in evacuating to a safer location. Why? Elaborate.
Pa help po pls... I really need help po. I'll mark brainliest who answered po.
which of the following would be good evidence that the negative resting potential of a cell is due to cl- diffusing in ? (choose all that are correct) group of answer choices when cl- concentrations outside the cell are raised, the membrane potential becomes more positive when cl- concentrations are raised outside the cell, the membrane potential becomes more negative anoxia causes an immediate large change in the membrane potential when cl- channel blockers are applied, the membrane potential goes toward zero
The membrane potential shifts to a more negative state when Cl⁻ concentrations outside the cell rise. The membrane potential approaches zero when Cl⁻ channel blockers are used.
The voltage setup by the concentration gradient of ions across the membrane is referred to as membrane potential. This value is between -40 mV to -70 mV. Intracellularly, the potassium concentration is higher. Extracellularly, sodium and chloride concentration is higher. So during hyperpolarization, the cell will become more negative.
This is because of the influx of chloride ions through chloride channels and the efflux of potassium ions. This causes the cell to be more negative and inhibits action potential firing. Then, the blocking of this Cl channel will increase the potential to zero. Therefore, the correct statements are statements 2 and 4.
The complete question is -
Which of the following would be good evidence that the negative resting potential of a cell is due to Cl- diffusing in? (choose all that are correct)
- When Cl- concentrations outside the cell are raised, the membrane potential becomes more positive.
- When Cl- concentrations are raised outside the cell, the membrane potential becomes more negative.
- Anoxia causes an immediate large change in the membrane potential
- When Cl- channel blockers are applied, the membrane potential goes toward zero.
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the ans stimulates smooth muscles, skeletal muscles and glands, whereas the somatic nervous system innervates skeletal muscles only. the ans stimulates smooth muscles, skeletal muscles and glands, whereas the somatic nervous system innervates skeletal muscles only. true false
It is False that the somatic nervous system only innervates skeletal muscles, whereas the ans stimulates smooth muscles, skeletal muscles, and glands.
While the somatic nervous system solely innervates skeletal muscles, the ans stimulates smooth muscles, skeletal muscles, and glands. The sympathetic division promotes numerous metabolic effects through hormone release by directly stimulating the nervous system.
While the somatic nervous system solely innervates heart muscles, the ANS stimulates smooth and skeletal muscles as well as glands. both the sympathetic and parasympathetic divisions innervate it. While the somatic nervous system solely innervates skeletal muscles, the ANS stimulates smooth muscles, skeletal muscles, and glands.
A "rush of adrenaline" is what is often referred to as the result of some sympathetic preganglionic fibers stimulating the adrenal medulla to release norepinephrine and epinephrine into the circulation.
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Which of the following best describes the structural relationship between genes, chromosomes, and DNA?
A Genes consists of two long strands of chromosomes, and each of these two strands consists of molecules called DNA.
B Each DNA molecule consists of a number of pairs of genes, and each pair of genes on the DNA molecule is made up of chromosomes.
C Each chromosome consists of a number of DNA molecules, and each DNA molecule is made up of one to four different genes.
D Each chromosome consists of a single long DNA molecule, and each gene on the chromosome is a particular segment of that DNA.
NEED ASAP
Answer:The correct answer is D. Each chromosome consists of a single long DNA molecule, and each gene on the chromosome is a particular segment of that DNA.
This is the structural relationship between genes, chromosomes, and DNA. The DNA molecule is the genetic material that carries the instructions for the development and function of all living organisms. It is made up of two complementary strands of nucleotides, which are the building blocks of DNA. Each chromosome contains one long DNA molecule, which is tightly coiled and packaged with histone proteins to form a structure called chromatin. Genes, which are the functional units of DNA, are located at specific positions along the chromosome and are composed of specific segments of the DNA molecule. The genes contain the instructions for making proteins, which are the building blocks of the body and play a crucial role in the development and function of all living organisms.
This answer is supported by the fact that chromosomes are the structures in cells that carry the genetic information in the form of genes, and that genes are made up of DNA which is a long molecule containing the genetic code.
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which membrane type allows some things through and restricts the passage of others? multiple choice question.
The membrane type that allows some thing through and restricts the passage of other is selectively permeable membrane.
A selectively permeable membrane is one that only lets specific materials and molecules enter or exit the cell. The cell membrane is an illustration of a membrane that is selectively permeable. It permits only specific types of molecules to pass through diffusion and sporadically through enhanced diffusion. Synonyms include semipermeable membrane, partially permeable membrane, and membrane with varying porosity.
A membrane that is selectively permeable encloses every cell. This membrane serves as a partition between the internal and external environments in addition to enclosing the cellular organelles. A selectively permeable cell membrane serves as the boundary or fence of the cell. It enables the molecules to move either actively or passively.
Active transport is the energy-intensive transport of molecules or ions into and out of the cell membrane. The hydrolysis of the phosphate group in ATP produces this energy.
Transport in Passive is Without using any energy, it is the inward and outward flow of molecules or ions from the cell membrane.
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Complete questions is:
which membrane type allows some things through and restricts the passage of others?
A. permeable membrane
B. semipermeable membrane
C. selectively or differentially permeable membrane
D. impermeable membrane
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how have many organisms in the spray zone adapted to the constant threats of predation and drying out?
Many organisms in the spray zone have adapted to the constant threats of predation and drying out by developing specialized physiological and behavioral strategies.
For example, many species of diatoms and other algae have evolved thick cell walls that help protect them from predation, while other species are able to survive in extreme conditions, such as very low salinity, by producing and storing organic osmolytes. Additionally, some species have adapted to the threat of drying out by forming reproductive structures that allow them to disperse across the spray zone.
These structures, such as bivalve shells, can help protect the organism from drying out, and allow them to move to more hospitable areas. Finally, a number of species have evolved the ability to aestivate, which is a strategy that helps them survive extended periods of drought.
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Which nucleic acid strand is complementary to the following: 5'AAAGCCTATS" (CHOOSE ALL THAT APPLY)SUUUCGGAUAS'AUAGGCUUU3STTTCGGATAS SATAGGETTY
The sequence of the provided strand is 5'-GAATTG-3'. The sequence 5'-CAATTC-3' will therefore be present on the complementary strand. Option A is the appropriate response, so.
Adenine and thymine form a double bond, while guanine and cytosine form a triple bond. As a result, adenine and thymine and cytosine and guanine are complimentary base pairs. The DNA strand 5' ATCGAACGT 3' has a complimentary sequence of 3' TAGCTTGCA 5'. Due to DNA polymerase's antiparallel construction in the 5' to 3' direction, one of these is known as the leading strand and runs in the 3' to 5' direction. The sequence of the provided strand is 5'-GAATTG-3'. The sequence 5'-CAATTC-3' will therefore be present on the complementary strand. Option A is the appropriate response, so.
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Which of the following substitutions is MOST likely to be critical?A.) Leu vs. LysB.) Tyr vs. PheC.) Gly vs. ValD.) Cys vs. MetE.) Ala vs. Val
Option C) Gly vs. Val is the most conservative sequence.
Conservative substitution is when an amino acid is replaced with another amino acid that has properties similar to the original amino acid, such as size, hydrophobicity, charge, etc. Glycine and valine both undergo conservative substitution because they are both aliphatic and lack any acidic or basic side chains.
In the evolution of proteins, the amino acid glycine has been remarkably preserved. Of all the amino acids, glycine has the smallest side chain. In order for polypeptide chains to make sharp turns or to get near to one another, their size is frequently crucial. Glycine is regarded as a conditionally essential amino acid for mammals like humans in order to promote healthy growth. Because newborns and fetuses in birds are unable to synthesize enough glycine to meet their metabolic needs, glycine is a crucial necessity for neonatal and fetal growth.
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what term refers to an organism's ideal range for an abiotic factor? readuing quiz i abeka 10th grade
The term for an organism's ideal range for an abiotic factor is its "optimal range."
An abiotic factor refers to non-living physical and chemical elements in the environment that shape the ecosystem. Examples of abiotic factors include temperature, light, water, soil type, and atmospheric gases. These factors influence the growth, distribution, and survival of living organisms in an ecosystem.
As per the context of the given question, the term optimal range refers to an organism's ideal range for an abiotic factor.
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a myelogram is used to record information about which tissue
A myelogram, which is also known as myelography, is used to record information about the spinal cord.
The spinal cord is basically a long, cylindrical structure which connects our brain and our lower back. It contains tissues, fluids as well as nerve cells. It performs the function of carrying electrical nerve signals throughout our body.
Myelography, also called myelogram uses a real-time form of x-ray which is known as fluoroscopy and an injection containing contrast material in order to evaluate the spinal cord, nerve roots as well as the spinal lining or the meninges. It is very useful for assessing the spine following a surgery and also for assessing disc abnormalities in those patients who cannot undergo MRI.
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voluntary skeletal muscles are moved by what part of the nervous system?
Voluntary skeletal muscles are moved by the somatic nervous system.
The somatic nervous system is a component of the peripheral nervous system which is associated with the voluntary control of the body movements via the use of the skeletal muscles.
Somatic nervous system consists of a sensory nerves carrying afferent nerve fibers, which relay sensation from the body to the central nervous system (CNS), and the motor nerves will carrying efferent nerve fibers, which relay motor commands from the CNS to stimulate the muscle contraction.
It consists of the two parts: Spinal nerves and Cranial nerves.
Spinal nerves are the mixed nerves that carry sensory information into and motor commands out of the spinal cord.
Cranial nerves are the nerve fibers which carry information into and out of the brain stem. They include smell, mouth, taste, eye muscles, ear, neck, shoulders, and tongue.
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Choose the term that best describes how bacteria respond to chemical attractants. a. Chemical attractants cause bacterial cells to grow additional flagella b. Chemical attractants speed up the rotation rate of flagello c. Chemical attractants inhibit tumbles, enabling bacteris to make faster progress toward the stimulus d. Chemical attractants cause flagellato rotate clockwise
The best term that describes how bacteria respond to chemical attractants is: option C. Chemical attractants cause bacterias to make faster progress toward the stimulus.
Bacteria are single-celled microorganisms that have a sensory system which allows them to respond to various chemical stimuli. When bacteria are exposed to chemical attractants such as nutrients, sugars, or other food sources, they respond by orienting themselves in the direction of the stimulus and swimming towards it.
This response is achieved through a complex system of flagella (the long, whip-like appendages that bacteria use for movement) that help the bacterium to move in a specific direction.
Chemical attractants cause the rotation rate of the flagellum to change, resulting in a decrease in the frequency of "tumbles" or random movements.
This helps the bacterium make faster progress towards the source of the chemical attractant.
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Solar flares can produce geomagnetic storms that reach Earth's atmosphere. How
can these storms affect satellites orbiting Earth?
A, They can increase the transmission range of some satellites.
B, They can cause disruption of satellite signals to Earth.
C, They can cause some satellites to overheat and burn up in space.
D, They can increase the speed of some satellites and cause them to move deeper into
space.
Answer:
Explanation:
hi it's
what term describes an organism that lacks superoxide dismutase and catalase enzymes
Organisms that lack superoxide dismutase (SOD) and catalase enzymes are referred to as obligate anaerobes.
Obligate anaerobes are microorganisms that are unable to tolerate the presence of oxygen and cannot survive in its presence. They are dependent on anaerobic (oxygen-free) environments for their survival. This is because the presence of oxygen creates an environment that is toxic to these organisms. In anaerobic conditions, the production of reactive oxygen species (ROS) such as superoxide anions, hydrogen peroxide and hydroxyl radicals is increased. These ROS can cause damage to cellular components such as proteins, lipids and DNA, leading to cell death.
The superoxide dismutase (SOD) and catalase enzymes play a crucial role in protecting cells from the toxic effects of reactive oxygen species by converting them into less harmful compounds. SOD converts superoxide anions into hydrogen peroxide, which is then broken down by catalase into water and oxygen. Obligate anaerobes lack these enzymes, making them highly susceptible to damage from ROS.
Obligate anaerobes are found in a variety of environments, including soil, water, and the digestive tracts of animals. They play an important role in many natural processes such as carbon cycling, nitrogen fixation and the breakdown of organic matter. In addition, some obligate anaerobes are also medically important as they can cause infections in immunocompromised individuals and can also contribute to the development of certain diseases such as periodontitis.
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What characteristic of the plasma membrane help regulate the passage of material in and out of the cell?The plasma membrane is made of phospholipids, cholesterol, and membrane proteins.Phospholipids = selectively permeable due to hydrophilic and hydrophobic regions.Hydrophilic heads outside phospholipid bilayer.Hydrophobic tails inside phospholipid bilayer (hydrophobic core).
The characteristic of plasma membranes that help regulate the passage of material in and out of the cell is: (5) Phospholipid bilayer structure and chemistry, proteins channels and cholesterol.
Plasma membrane is the outer protective layer in the cells which is made up of lipid bilayer. It is a semi-permeable membrane that mediates the transfer of selected molecules only through it. The fluidity of the membrane is mediated by the cholesterol molecules.
Proteins channels are the intermembrane proteins embedded in the plasma membrane that allow the transfer of significant molecules through it. These channels open through certain stimulus and allow the transfer of molecules.
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The given question is incomplete, the complete question is:
What characteristic of the plasma membrane help regulate the passage of material in and out of the cell?
Proteins channels onlyMitochondria onlyGolgi body, cytoskeleton, ribosomesThat phospholipid membrane is completely hydrophilicPhospholipid bilayer structure and chemistry, proteins channels and cholesterol.which reaction releases the most energy? choose one: hydrolysis of glucose 6-phosphate to glucose hydrolysis of 1,3-bisphosphoglycerate to 3-phosphoglycerate transfer of phosphate group from atp to glucose hydrolysis of atp to adp hydrolysis of adp to amp
Option B: hydrolysis of 1,3-bisphosphoglycerate to 3-phosphoglycerate releases the most energy.
By transferring the high-energy phosphoryl group from the carboxyl group of 1,3-bisphosphoglycerate to ADP, the enzyme phosphoglycerate kinase creates ATP and 3-phosphoglycerate. The only reversible kinase process in glycolysis is this one. At the substrate stage of phosphorylation, this process produces ATP. This is a significant step in glycolysis. Thus, option B is the right choice.
Through a sequence of processes known as glycolysis, glucose is divided into two pyruvate molecules, each of which has three carbons. The energy-requiring phase and the energy-releasing phase are the two primary stages of glycolysis, which occur in the cytoplasm of a cell. Conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate is a energy-releasing process.
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The receptor cells for static equilibrium are located in the?
Answer: The vestibule.
Explanation: They are monitored in the vestibule.
