Threonine is an amino acid that can be converted into isoleucine. As isoleucine accumulates, isoleucine can bind to threonine deaminase, the first enzyme in the metabolic pathway, shutting the pathway down. This is a type of regulation known as _________ ________.
Answers
This type of regulation is known as "end-product or feedback inhibition."
End-product or feedback inhibition is a fundamental mechanism used by cells to regulate metabolic pathways and maintain homeostasis.
It involves the control of enzyme activity by the end product of a pathway.
Threonine metabolism, the conversion of threonine to isoleucine is regulated by feedback inhibition.
Threonine deaminase is the first enzyme in the pathway responsible for converting threonine into isoleucine.
As isoleucine accumulates in the cell, it can bind to threonine deaminase, effectively inhibiting its activity.
The binding of isoleucine to threonine deaminase alters the enzyme's conformation, making it less active or completely inactive.
This prevents further conversion of threonine into isoleucine, thus halting the pathway.
By shutting down the pathway when isoleucine levels are high, the cell ensures that isoleucine production is regulated and maintained within appropriate levels.
Feedback inhibition is an important mechanism for preventing the overproduction of metabolites and maintaining a balance within the cell. It allows cells to respond dynamically to changes in metabolic demands and maintain optimal levels of various molecules.
This regulation ensures efficient resource utilization and prevents the buildup of potentially harmful or unnecessary metabolites.
Overall, feedback inhibition is a key strategy employed by cells to maintain metabolic homeostasis.
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Related Questions
PLS I NEED THIS ASAP
Which would result a farmer in producing more food at a lower cost?
planting wheat that is resistant to weed killer
breeding pear trees that grow sweeter fruits
growing rice that only grows in warm climates
producing vegetable oil that has added vitamin A
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Answer:
A.
Explanation:
sorry this is late.. proof below btw ;c
Answer:
A
Explanation:
i did the quiz
what happens to the energy captured during glycolysis and the citric acid cycle by the activated carriers nadh and fadh2.
Answers
Energy is passed to an electron transport chain in order to produce a proton (H+) gradient across the inner mitochondrial membrane.
What is oxidative phosphorylation?Oxidative phosphorylation is the last and most energetically efficient step in cellular respiration.
Oxidative phosphorylation is based on the transport of electrons on carriers, which is coupled to the generation of a proton gradient.
In conclusion, energy is passed to an electron transport chain in order to produce a proton (H+) gradient across the inner mitochondrial membrane.
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humans have difficulty resisting unhealthy fast food options because genes encourage the consumption of high-fat and high-calorie foods helped early humans survive long periods without access to food
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Humans have difficulty resisting unhealthy fast-food options because genes encourage the consumption of high-fat and high-calorie foods helped early humans survive long periods without access to food.
What is the role of genes in the consumption of high-fat and high-calorie food?Genes encourage the consumption of high-fat and high-calorie foods because they helped early humans survive long periods without access to food. The human body evolved to store energy as fat to cope with times of food scarcity.
In today's world, however, food is plentiful and easily accessible, making it difficult to resist the temptation of high-fat and high-calorie foods. The genes that encouraged early humans to consume high-fat and high-calorie foods were advantageous for survival in times of food scarcity.
The environment of early humans was uncertain, and food was often scarce, so the ability to store fat and consume high-calorie foods helped individuals survive for long periods without food. However, in modern society, where food is abundant, these same genes can lead to health problems and disease if not managed properly.
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cystic fibrosis is an inherited genetic disorder that affects the digestive system and the lungs. if a mother carries a recessive allele for a genetic disorder, such as cystic fibrosis, under what circumstances will her children inherit the disorder?
Answers
If a mother carries a recessive allele for cystic fibrosis, her children will only inherit the disorder if they inherit two copies of the mutated gene, one from each parent.
The child must inherit one copy of the mutated gene from the mother and one from the father, who must also be a carrier of the mutated gene or have cystic fibrosis themselves. If only one parent carries the mutated gene, the child will not inherit the disorder but will be a carrier like the parent. However, if both parents are carriers, there is a 25% chance that each child they have will inherit two copies of the mutated gene and therefore have cystic fibrosis.
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I Dont understand about fussion (binery fussion)
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Answer:
Here is ur answer ...
Fission, in biology, is the division of a single entity into two or more parts and the regeneration of those parts to separate entities resembling the original.
3. what is the area just superior to where the medulla joins the spinal cord where motor tracts cross?
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The area just superior to where the medulla joins the spinal cord where motor tracts cross is your pons.
The medulla is the lowest part of the brain and connects to the spinal cord through the foramen magnum, an opening in the lower part of the skull. Just above the medulla is the pons, just below the central structures of the brain.
The medulla oblongata is at the base of the brain where the brainstem connects the brain and spinal cord. It plays an important role in transmitting messages between the spinal cord and the brain. It is also important for regulating the cardiovascular and respiratory systems. There is an anterior median fissure along the midline on the ventral surface of the medulla oblongata.
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Chicken pox is a virus that causes an itchy rash but typically does not have any major or lasting effects on an infected person. Before 1995, chicken pox parties were popular. In a chicken pox party, healthy children were brought around children who were ill with chickenpox so that they would be exposed to the virus and their immune system would learn to fight it. A vaccine for chickenpox was developed in 1995, and chicken pox parties are now rare.
Which statement best summarizes this information?
Advances in society affect technology.
Advances in society affect science.
Advances in science affect technology.
Advances in technology affect society.
Answers
Answer:
Advances in society affect technology.
Explanation:
HURRY I DONT HAVE ALOT OF TIME
An object is uniformly accelerated from rest to a speed of 25 meters per second in 10 seconds. What is the acceleration of the object? Pay attention to your units.
250 m/s
2.5 m/s2
2.5 m/s
250 m/s2
Answers
Answer:
b maybe
Explanation:
PLEASE HELP ME WITH MY BIOLOGY PROBLEM!! WILL GIVE BRAIN?!
Answers
Unlike a typical animal cell, this plant cell has an angular shape. The shape of a plant cell is due, mostly, to the presence of the
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how many gametes will be made from this genotype (AaBbCCDdEEFf)?
Answers
\({\fcolorbox{blue}{yellow} {64 possible gametes} }\)
Explanation:To determine the number of gametes that can be produced from an individual with a given genotype, you need to calculate the total number of possible combinations of alleles that can be produced during meiosis.For the genotype AaBbCCDdEEFf, there are six different gene loci, each with two possible alleles. Therefore, the total number of possible gametes can be calculated as follows:2⁶ = 64 possible gametesSo, an individual with the genotype AaBbCCDdEEFf can potentially produce 64 different gametes through meiosisoose the correct statement about carbohydrates. a. all monosaccharides contain 6-18 carbon atoms arranged in long chains. b. disaccharides contain two monosaccharides hooked together. c. carbohydrates are digested by lipases. d. after enzymes break down carbohydrates, disaccharides are absorbed into the blood.
Answers
The correct statement about carbohydrates is that disaccharides contain two monosaccharides bonded together.
Carbohydrates, along with proteins and fats, are one of the three main nutrients found in foods and beverages. Carbohydrates are converted into glucose by your body. Glucose, also known as blood sugar, is the primary energy source for your body's cells, tissues, and organs. Glucose can be used right away or stored for later use in the liver and muscles.
Monosaccharide and disaccharide groups are found in simple carbohydrates. Monosaccharides are made up of a single simple sugar unit, such as glucose, fructose, or galactose, and they cannot be broken down further. To create more complex carbohydrates, these three monosaccharides are combined in various ways.
Disaccharides are made up of two monosaccharide units joined by a glycosidic bond. O-glycosidic bonds, in which the oxygen from the a hydroxyl group becomes connected to the carbonyl carbon, are the most common glycosidic securities connecting monosaccharide units.
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1. An egret hangs out with cattle. The cattle graze and eat grass. The cattle’s grazing disturbs the insects and other animals living in the grass. This disturbance makes it easier for the egret to catch and eat these insects for food. Type of symbiosis
Answers
This is an example of Commensalism symbiosis.
Cattle egrets and the creatures they commonly accompany share a mutually beneficial relationship. When cattle move, egrets perched on their backs hunt parasitic insects like ticks, fleas, and flies while egrets on the ground try to catch grasshoppers or other insects that are disturbed by the movement of the cattle.
Cattle egrets with cattle grazing exhibit commensalism as well. Egrets are a type of bird that frequently visits pastures where cattle graze. The birds feed on insects that the cattle upset and expel out of the vegetation when they are grazing.
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The complete question is:
An egret hangs out with cattle. The cattle graze and eat grass. The cattle’s grazing disturbs the insects and other animals living in the grass. This disturbance makes it easier for the egret to catch and eat these insects for food. What type of symbiosis is this?
why us a spirogyra called a thallus ? which types of nutrition does it show ?why?
Answers
Explanation:
a plant body that is not differentiated into stem and leaves and lacks true roots and a vascular system. hence spirogyra called a thallus.
Spirogyra is an example of Green algae , thus it prepare its own food by process of photosynthesis in presence of sunlight and chlorophyll.So, its nutrition type is Autorophic.
A. Spatial summation B. Threshold stimulus C. Subthreshold stimulus D. Temporal summation _____ 9. Numerous nerve impulses arriving at a synapse at closely timed intervals exert a cumulative effect. _____ 10. Stimulation of a postsynaptic neuron by many terminals at the same time. _____ 11. An insufficient stimulus. _____ 12. Any stimulus below this intensity will result in no response in a neuron.
Answers
Temporal Summation Numerous nerve impulses arriving at a synapse at closely timed intervals exert a cumulative effect. Spatial summation Stimulation of a postsynaptic neuron by many terminals simultaneously. Subthreshold stimulus An insufficient stimulus. Threshold stimulus Any stimulus below this intensity will result in no response in a neuron. The correct order is 9) D, 10) A, 11) C, 12) B.
Temporal summation refers to numerous nerve impulses arriving at a synapse at closely timed intervals and exerting a cumulative effect.
This process allows for the integration of multiple inputs and the ability to generate an action potential.
Spatial summation refers to simultaneously stimulating a postsynaptic neuron by many terminals.
This process involves the integration of inputs from different locations on the neuron, allowing for the summation of excitatory and inhibitory signals.
A Subthreshold stimulus is an insufficient stimulus that fails to generate an action potential in a neuron.
However, subthreshold stimuli may still have an effect on the membrane potential and may contribute to the process of summation.
The threshold stimulus is the minimum intensity of a stimulus that is required to generate an action potential in a neuron. Any stimulus below this intensity will result in no response in the neuron.
Once the threshold is reached, an action potential will be generated and propagated along the neuron.
Overall, temporal and spatial summation, along with the threshold and subthreshold stimuli, are essential concepts for understanding the functioning of neurons and neural networks.
These processes allow for the integration and processing of multiple inputs, and the generation of appropriate responses. Therefore, the correct response is 9) D, 10) A, 11) C, 12) B.
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In what ways do plants benefit from animals?
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A parent cell has 24 chromosomes at the beginning of interphase. How many chromatids will it have during prophase? 48 24 12 06 Which of the following best describes a major difference between plant cells and animal cells? O Only plant cells use cellular respiration. Only plant cells have a nucleus containing DNA. Unlike plant cells, animal cells cannot make their own food. Only animal cells have a cell wall.
Answers
During prophase, the parent cell will have 48 chromatids. This is because during interphase, the DNA replicates, resulting in each chromosome consisting of two sister chromatids.
Therefore, if the parent cell has 24 chromosomes, it will have a total of 48 chromatids during prophase.
Regarding the major difference between plant cells and animal cells, the most accurate statement is: "Only plant cells have a cell wall." Plant cells have a rigid cell wall made of cellulose, which provides structural support and protection to the cell. Animal cells, on the other hand, do not have a cell wall. Hence option D is correct.
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why do our lungs slightly tickle, when you try to hold your deep breath in.
I am talking about the time around 10-20 seconds when you start to have a sensation that tries to force you to release.
Answers
The sensation of tickling or discomfort that you may feel when trying to hold your breath for an extended period of time is due to the buildup of carbon dioxide (CO2) in your bloodstream.
When you inhale, oxygen enters your lungs and is transported to your body's cells through the bloodstream. As the cells use oxygen to produce energy, they also produce CO2 as a waste product. The CO2 then travels back to the lungs, where it is exhaled out of the body.
When you hold your breath, the body's cells continue to use oxygen and produce CO2. However, since you are not exhaling, the CO2 builds up in your bloodstream, causing the blood to become more acidic. This change in pH triggers the body's respiratory center, which sends a signal to the lungs to breathe in air and release the CO2.
The sensation of tickling or discomfort that you feel is your body's way of telling you to breathe in air and release the CO2. If you continue to hold your breath, the discomfort may increase and eventually become painful, and you may also start to feel dizzy or lightheaded due to the lack of oxygen.
Name of process whi ch can increase the rate of dissolving waterr in salt
Answers
Agitation and stirring will increase the rate of dissolving water in salt.
What is agitation and stirring?Agitation:
A fluid is agitated when it is made to flow mechanically through a vessel in a certain pattern, such as a circulatory one. The process of agitating a mixture involves the movement of one or more of its constituent parts to enhance contact. A liquid's usual properties will change as a result of vigorous agitation, especially with water, which reduces the liquid's aggregation.
Stirring:
To stir is to continually or repeatedly move one's hand through something (such a liquid or another substance) in order to cool, mix, agitate, dissolve, etc. any or all of the component parts: to use a spoon to stir your coffee.
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For a cell of a multicellular organism to remain capable of responding to incoming signals, each molecular change in its signaling pathways must last only a short time.
Answers
That is correct. In a multicellular organism, cells rely on communication between one another through the use of signals.
These signals can trigger a cascade of molecular changes in the cell, known as signaling pathways. However, it is important for these changes to be short-lived in order for the cell to remain capable of responding to incoming signals. This ensures that the cell can quickly adapt to changes in its environment and maintain proper function within the organism as a whole.
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Atividade de Português
Answers
Answer:
1- C
2-
3- C
4- C
Explanation:
What occurs when an axon is not conducting a nerve impulse and there is more sodium
outside the axon and more potassium inside the axon?
Select one:
O a. An action potential
O b. An autonomic potential
c. A resting potential
O d. A somatic potential
Oe. A threshold potential
Answers
When an axon is not transmitting a nerve impulse, more sodium is present outside and more potassium is present inside the axon, which results in the resting potential.
What is axon?A nerve cell, or neuron, projects a long, thin portion called an axon that carries electrical impulses away from the neuron's cell body. It is in charge of relaying data from one neuron to the next, whether it be to a muscle cell or another neuron. The action potentials, which are electrical impulses that flow along the axon, enable quick and effective communication between neurons and other cells in the body.
At this point, the electrical potential of the axon differs because its inside is negatively charged relative to its exterior. The selective permeability of the cell membrane to ions and the action of ion pumps maintain this electrical potential. When a change in the membrane potential surpasses a certain threshold, the resting potential serves as a baseline from which an action potential can be started.
When the threshold is crossed, voltage-gated ion channels open, allowing positively charged ions to quickly and briefly enter the membrane and depolarizing it, resulting in an action potential.
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How are seismic waves useful for studying the struc-
ture of Earth's interior?
Choose the TWO correct answers.
A They help scientists predict when and where earth-
quakes will happen.
B They help scientists determine the composition of
Earth's interior.
C They help scientists understand the various layers of
Earth's interior and their thickness.
Answers
Answer:
Explanation:
I believe it's B and C, but I don't know where these questions are coming from, therefore I might be wrong. This is just based off my knowledge. Good luck!
What does sexual reproduction allow for?
A. Decreased rate of evolution
B. Increased genetic diversity
C. Decreased genetic diversity
D. Increased offspring
Answers
The reproduction that includes the involvement of the gametes from the male and female species allows increased genetic diversity. Thus, option B is correct.
What is genetic diversity?Genetic diversity defines the genetic characteristics of the species. Genetic diversity results in the variation of traits and attributes.
It is high in the case of the species that reproduce through gametes and in return increases the rate of variation in the offspring due to recombination and crossing over.
Therefore, reproduction allows for increased genetic diversity.
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Which type of density do you think puts more of a strain on the environment? Why?
Answers
High population density puts more strain on the environment because it leads to greater demand for resources and increased pollution.
A high population density means more people are living in a particular area, which in turn increases the demand for resources such as water, food, and energy. This leads to a greater strain on the environment, as more resources need to be extracted, produced, and transported, resulting in increased greenhouse gas emissions and pollution.
High population densities also put pressure on natural habitats, as land is cleared for housing and infrastructure. This can lead to deforestation, loss of biodiversity, and destruction of ecosystems.
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the baby will pass through what structure last? A.vagina, B.uterus, C.cervix, D. Fallopian Tube.
don’t give me long responses please just tell me if it’s a.b,c, or d
Answers
Answer:
A. Vagina
Explanation:
Hope this can help
Answer: The answer is A. That the opening that the baby comes out of
Explanation:
necesito un impacto negativo de la biodiversidad del mosquito aedeomyia squamiennis
ayuda:/
Answers
Answer:
El cambio climático tiene un impacto negativo.
Explicación:
El impacto negativo en la biodiversidad del mosquito aedeomyia squamiennis se debe al cambio climático que disminuye su población porque el cambio climático hace que el medio ambiente sea desfavorable para el mosquito. Debido a este cambio climático, aquellos organismos que se adoptan de acuerdo con el cambio ambiental pueden sobrevivir pero aquellos que no pueden extinguirse del medio ambiente, por lo que podemos decir que el cambio climático tiene un efecto negativo en la biodiversidad del mosquito aedeomyia squamiennis.
identify the true and false statements about race.
Answers
The true and false statements about race are as follows:
True Statement(s): There is no race chromosome in our DNA, Race is a social construct.
False Statement(s): Race is by definition about differences in physical appearance, Race is not real.
What is race?Race is a concept used to categorize humans into distinct groups based on physical and biological characteristics, such as skin color, facial features, and hair texture.
Race has been used to distinguish groups of people and has been historically tied to social, economic, and political power. However, the concept of race is not supported by modern genetic research, as genetic variations do not align with racial categories. Thus, there is no race chromosome in our DNA.
Race is a social construct that is subject to change over time and varies between different cultures and societies.
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Complete question:
identify the true and false statements about race.
There is no race chromosome in our DNA.
Race is a social construct.
Race is by definition about differences in physical appearance.
Race is not real.
What is phylogeny?
A. How species interact with each another
B. The study of cells.
C. How organisms are related through evolution.
Answers
Answer:
Hey mate......
Explanation:
This is ur answer......
C. How organisms are related through evolution...Hope it helps!
Brainliest pls!
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Answer:
C. How organisms are related through evolution.
Explanation:
Phylogeny is the organisms that are related through evolution.
The following are proteins involved in the cell's response to hydrophilic hormones. Arrange them in the sequence they act in, from first to last.
G protein, membrane receptor, second-messenger generating enzyme
Answers
The sequence of events in the cell's response to hydrophilic hormones involves three main proteins: membrane receptor, G protein, and second-messenger generating enzyme.
The hormone binds to a specific membrane receptor, triggering a conformational change that activates an associated G protein. The activated G protein then binds to and activates a second-messenger generating enzyme, which produces a second messenger molecule such as cAMP or IP3. This second messenger then activates downstream effector proteins that mediate the hormone's physiological effects within the cell. This process allows for rapid and specific signaling within cells in response to extracellular cues, and is a critical mechanism for maintaining homeostasis in the body.
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