Answer:
c. Succinyl-CoA binds at a regulatory site other than the active site
Explanation:
The sigmoid saturation curve is a property of of allosteric enzymes which reflects the cooperaive interactions between the protein subunits in the enzymes.
Allosteric enzymes function through reversible, non-covalent binding of regulatory compounds called allosteric modulators.
Allosteric enzymes have different binding site for the substrate and for their allosteric modulator.
In the citric acid cycle, succinyl-CoA serves as as allosteric inhibitor of citrate synthase which catalyses the production of citrate from oxaloacetate and acetyl-CoA.
From the given options:
a. Succinyl-CoA competes with dissociation of CoA as a product of the reaction is wrong because it has its own binding site as an allosteric modulator.
b. Succinyl-CoA binds covalently to the enzyme is wrong because allosteric enzymes functions through non-covalent interactions.
c. Succinyl-CoA binds at a regulatory site other than the active site is true because citrate synthase is an allosteric enzyme
d. Succinyl-CoA competes with acetyl-CoA for binding at the active site is wrong because acetyl-CoA binds to the active site while succinyl-Coa binds to the regulatory site.
e. Succinyl-CoA competes with oxaloacetate for binding at the active site is wrong because oxaloacetate binds to the active site while succinyl-Coa binds to the regulatory site.
The adaptive structure and function of leaves and stems helps the plant
A create its own energy
B prevent wilting
C produce haploid gametes
D produce diploid gametes
Answer:
I think, your answer is,. create it's own energy. By the process of photosynthesis, where stems and leaves do their major function.Explanation:
Hope it helps you........Answer:
A. Create it's own energy
Explanation:
Plants have adaptations that assist in the creation of energy such as: stems support and hold the leaves above the ground for more light, surface of leaves exposed to sunlight.
What does DNA provide the code for?
nitrogenous base pairing
protein synthesis
deoxyribose formation
nucleotide synthesis
Answer:
Protein Synthesis
Explanation:
DNA provide the code for protein synthesis.
This DNA code contains the instructions needed to produce the proteins and molecules essential for our growth, development and health.
Protein synthesisProtein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation. Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus. It includes three steps: initiation, elongation, and termination.
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How can changes on earths surface affect changes below surface
Answer:
There are several changes that occur on the earth's surface but also affects the changes below the surface, some of them are as follows:
When rainfall occur on the sandy surface on earth, it looses the soil under the surface and can cause landslides.Imbalance in the food chain above or on the earth surface can affect the nutrient quantity below the surface that is essential for soil bacteria and other microorganisms.Deforestation can also loosen the soil and soil under surface can shift its position.Use of chemicals on agriculture surface can lead to change the fertility of soil below the surface.In Drosophila, the genes for body coloration and eye size are on different chromosomes. Normal-colored bodies are dominant to ebony-colored (very dark) bodies, and normal-sized eyes are dominant to eyelessness. Line A is true breeding for normal bodies and normal eyes, whereas line B is true breeding for ebony bodies and eyelessness. From an F 2 cross between lines A and B, 800 flies are scored. How many F 2 flies are expected to have normal body color and to be eyeless
Answer:
150.
Explanation:
150 flies are expected to have normal body color and to be eyeless in F2 generation. The reason for that population is the ratio of the species produced. The ratio of the species are 9:3:3:1. Ratio 9 refers to first parent while 1 refers to second parent and the middle 3's represent the hybrid formed. So the population of first parent is 450 and population of second parent is 50 while the population of two hybrids are 150 each.
If one DNA strand is 5'-GGCATTACACTAGGCCT-3', what is the complementary srand?
Answer:
3' - CCGTAATGTGATCCGGA - 5'
Explanation:
In DNA, the leading strand builds from a 5' to 3' direction and the lagging strand (complementary strand) must build from a 3' to 5' direction.
The base-pairing rules for DNA are:
- adenine always pairs to thymine (A to T) (T to A)
- guanine always pairs to cytosine (G to C) (C to G)
In both photosynthesis and respiration, _______ synthesis is coupled to the diffusion of protons across a membrane from high to low concentration.
Answer:
ATP is the answer
History has demonstrated that the techniques employed in this laboratory exercise often overestimate an individual's actual resting tidal volume. List some reasons why these laboratory techniques might produce abnormally high values for resting tidal volume.
Answer:
See below
Explanation:
One possible reason here could be the fact that since the person is being watched while doing this exercise, they might tend to breather deeper than they normally do. Secondly, it may also be because the person is trying to make up for the spit filter and flow meter by breathing harder/sharper than they normally would.
Approximately how much methane does one cow produce per year? How does the greenhouse gas warming effect of methane compare to carbon dioxide? Describe the organisms that digest and ferment the hay inside of the cow’s stomach? How are scientists reducing the amount of methane released from cows?
Answer:
Cattle and other ruminants are significant producers of the greenhouse gas methane—contributing 37 percent of the methane emissions resulting from human activity. A single cow on average produces between 70 and 120 kg of methane per year and, worldwide, there are about 1.5 billion cattle.
While carbon dioxide is typically painted as the bad boy of greenhouse gases, methane is roughly 30 times more potent as a heat-trapping gas. ... As temperatures rise, the relative increase of methane emissions will outpace that of carbon dioxide from these sources, the researchers report.
The cow's rumen is like a large fermentation vat. More than 200 different bacteria and 20 types of protozoa help the cow to utilize fibrous feedstuffs and non-protein nitrogen sources. ... Bacteria adhere to the feed and gradually digest the fermentable material.
“You can probably reduce methane by about 20-25% by altering diet,” he says. One study by researchers at the University of California, Davis, estimated it might be possible to reduce global methane emissions from cows by 15% by changing their diet.
Explanation:
Hope it helps.
In the body, the homeostasis of which element is related to properties of bone?
Answer:
Homeostasis of calcium
Explanation:
Bone homeostasis is a complex process by which osteoclasts resorb bone and osteoblasts engage in new bone tissue formation. This sequence has to be controlled and and planned in order to maintain skeletal integrity of bones.
Calcium homeostasis is related to bones physical properties because play a crucial role in skeletal muscle maintenance by acting as mitogen-activated protein kinase (MAPK) signaling effector and other different pathways that is responsible for regulating cell proliferation, differentiation, and cytoskeletal restructuring .
In the body, the homeostasis of Calcium element is related to properties of bone
What is Bone homeostasis?Bone homeostasis is defined as the dynamic equilibrium which is maintained by the regulatory functions of the three major bone cells, osteoclasts, osteoblasts and osteocytes, as long as the activities of these cells are properly adjusted, therefore the net bone mass is maintained.
Calcium homeostasis is related to the physical properties of bones as it plays an important role in skeletal muscle maintenance by acting as an effector of mitogen-activated protein kinase (MAPK) signaling and various other pathways that regulate cell proliferation, differentiation and cytoskeletal reorganization.
Thus, in the body, the homeostasis of Calcium element is related to properties of bone.
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What will most likely happen to the population of moths in this habitat?
Answer:
Genetic variation will increase because of a new habitat and food source. What will most likely happen to the population of moths in this habitat? The moths will evolve due to a selective pressure. ... Population changes are driven by competition and sexual selection.
Explanation:
Which type of muscle tissue is both voluntary and striated?
smooth
cardiac
skeletal
heart
Answer:
skeletal muscle fibres.
Explanation:
skeletal muscle fibres occur in muscles which are attached to the skeleton. They are straited in appearance and under voluntary control.
Hope it helps.
Answer:
C
Explanation:
Hope that helps!
Me ayudan es para la noche.
Elabora un cuadro identificando las características homogéneas de los ecosistemas peruanos y ubica en el mapa del Perú cada uno de los ecosistemas.
Answer:
Los ecosistemas peruanos comprenden montañas, ríos, lagos y selvas tropicales.
Explicación:
Las características de los ecosistemas peruanos son montañas, ríos, lagos y selvas tropicales. La montaña que está presente en el Perú es la cordillera de los Andes. El río llamado río Amazonas también está presente en esta región. El lago Titacaca también está presente en esta área y en el tercer bosque tropical más grande del mundo. Debido a la gran diversidad, cerca de 30 ecosistemas están presentes en el Perú. El ecosistema forestal está presente a gran altura en las montañas, mientras que los ecosistemas de ríos y lagos están presentes en la parte inferior del mapa.
Based on what you learned about the main elements
in living things, which element do you think forms the
main structure
of organic molecules?
A. Oxygen, because it is the element present in
highest amount in living things
B. Carbon, because it readily forms long chains and
rings
Answer:
A
Explanation:
it is composing about 65% of the human body
Answer:
B
Explanation:
Because it's right.
Of the three major groups of forensic science professionals, which of the following provide specific knowledge in an area of science, such as botany or anthropology? A. associate scientists B. forensic pathologists C. forensic scientists D. forensic odonatologist
Answer:
A. associate scientists
hope this answer correct (^^)..
Answer:
answer A
Explanation:
What is one way to classify mud found in an ecosystem? organism population biotic factor abiotic factor
Answer:
abiotic factor
Explanation:
Mud, while hosting many multicellular and unicellular organisms, simply refers to the combination of water and dirt, neither of which are living.
Answer:
abiotic factor
Explanation:
the fact that for a given species the amount of purnies in hte dna always matches the number of pyrimidines was first determined by
Answer:
It was given by Chargaff and it is know as chargaff's rule
1. Hypothesize in what type of environments it would be advantageous for a protist to be autotrophic, heterotrophic, or mixotrophic.
Answer:
See below
Explanation:
Protists fall into the category of eukaryotes. They are diverse in nature and typically are found to be single celled organisms containing very organized structures.They are classified based on what is their source of nutrition.
Autotrophic - capable of photosynthesis to produce their own food, so an environment where sunlight, CO2 and water is available.
Heterotrophic - feed on other organisms , an environment where prey is plenty and very limited or no access to sunlight.
Mixotrophic - a combination of the above two, an environment with all of the aforementioned factors present.
Compare and contrast the contributions of Neel, Pauling, and Ingram to our understanding of the genetic and molecular basis of sickle cell disease (SCD).
He demonstrated that SCD and sickle cell trait were due to the presence of abnormal 8-globin polypeptides in red blood cells. He demonstrated that the electrophhoretic mobility of B-globin from patients with SCD was different from that of healthy individuals. He demonstrated that both parents of multiple patients with SCD had low levels of sickled red blood cells. He hypothesized that SCD was a recessive trait and that the parents of patients with SCD would be heterozygous carriers. He demonstrated that the difference between B-globin polypeptides in individuals who were healthy and those with SCD is an amino acid substitution. He performed a peptide fingerprint analysis on B-globin from individuals with 84 84 and 89 88, which identified the segment of B-globin that was changed by the BS mutation. James Neel Linus Pauling Vernon Ingram
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Which could best be used to explain why bacteria can infect a person very quickly? outer capsule binary fission protective covering genetic recombination
The reason why bacteria can infect a person very quickly is because of the process of binary fission.
What is binary fission?
Binary fission is defined as the reproduction process that is found in prokayotes such as the bacteria.
The binary fission involves these steps:
Replication of DNA (deoxyribonucleic acid),Growth of a cell,Segregation of DNA and Splitting of cells.The final stage which is the splitting of cells leads to the formation of many daughter cells of the parent bacteria cell which can eventually led to infection.
Therefore, the reason why bacteria can infect a person very quickly is because of the process of binary fission.
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Answer:
Which could best be used to explain why bacteria can infect a person very quickly?
x. outer capsule.
√. binary fission is the right one.
x. protective covering.
x. genetic recombination.
Explanation:
I got 100% on the test
⬆️ plus the person above is correct ⬆️
Alex was energetic once he learned to walk, getting into anything he could find. He soaked in every piece of new information, seeming to learn a new skill every day. But after he turned 2, he became lethargic and inattentive. This coincided with his becoming a much pickier eater; he primarily consumes hot dogs with no bun, fast food French fries, and candy. As a result of this diet, he may have developed . Adding ________ to his diet may help reverse his symptoms.
Which of the following are effects of lead poisoning in infants and children?
a. Slowed body growth
b. Type 1 diabetes
c. Impaired hearing
d. Reduced IQ
e. Kidney damage
Answer:
All but B are primary symptoms of lead exposure in children and infants
Explanation:
The effects of lead poisoning in infants and children are:
Slowed body growthKidney damageImpaired hearingReduced IQLead is commonly as joint toxicant that affects multiple body systems and is very harmful to young children.
Lead that is present the body is spread to the brain, liver, kidney and bones.
When it is stored in the teeth and bones, where it gathers over time.
Human exposure is usually measured through the measurement of lead in blood.
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Primatologists Group of answer choices know nothing of primate bones. study only physical aspect of primates. explore the relationships between specific social behaviors and reproductive fitness. study cultural anthropology.
Answer:
The correct option will be Option B (study only physical aspect of primates).
Explanation:
The significant components of that same endangered as well as surviving primates are analyzed by a primatologist. Also, the primates come to terms with either the molecular and physiological elements. A primer broader knows a great deal about everything from the bones of the primates. We also integrated depth of understanding of both biologizes including primate behavior.The other choices don't apply to the specified scenario. So option B will be the perfect option for b.
Art-Labeling Activity: Components of blood.
Explanation:
Blood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets.
What substance are the bacteria (microorganisms) breaking down in the digestive system of cattle? Describe the digestion of this substance.
Answer:
The Bacteria or microorganisms are present in the rumen of cattle that aid in the digestion of cellulose and grains in the digestive system of cattle.
The process of digestion of cellulose by bacteria in cattle is anaerobic digestion and includes two steps – the production of the required enzymes and the fermentation.
In the fisrt step of production of enzyme, the microbes or bacteria are found in the first chamber of the stomach. These bacterias or microbes releases several enzymes that helps in splitting the cellulose into smaller carbs such as glucose.
These smaller carbs are the move to thrd chamber of the stomach and fermented. the required nutrients are absorbed. The digested food then finally reached at fourth chamber (acidic part), where the remained food is digested and passes to the small and large intestines.
What do you think would happen if there was more glucose (sugar) than available NAD+? Explain.
Answer:
n people who have developed diabetes, glucose builds up in the blood, resulting in hyperglycemia. ... And, too much sugar in the bloodstream can cause other types of damage to body tissues, which can increase the risk of heart disease and stroke, kidney disease, vision problems, and nerve problems in people with diabetes.
Explanation:
Complete the following statements to assess the understanding of how drugs increase the effect of a neurotransmitter at a synapse. Not all choices will be used.
Most illicit drugs affect the nervous system by affecting the action of a particular neurotransmitter at _____ in the brain. Drugs that increase the likelihood of neuron excitation are called _____, and those that decrease that likelihood are called _____.
Specific ways that a drug could increase the effect of a neurotransmitter (NT) at a synapse include 1) causing the NT to leak out of a synaptic _____into the synaptic cleft; 2) preventing _____ of the NT presynaptic membrane; and, 3)blocking an _____that normally breaks down the NT.
Word Bank:
acetylcholine
delays
depressants
dopamine
equal
excitement
larger
release
stimulants
synapses
vesicle
reuptake
enzyme
Proteins are NOT found in what type of food source?
Answer:
all fruit except dried fruits
all vegetables except peas, beans and corn
herbs and spices
Which of the following particles has a negative charge?
A.
Nucleus
B.
Neutron
C.
Electron
D.
Proton
Answer:
C. Electron (e-) has a negative charge
Answer:
c
Explanation:
How are vascular tissues arranged in dicot stems?
A karyotype shows that a child has Klinefelter syndrome (47,XXY). If the child is also color-blind (due to a recessive X-linked allele), despite his parents having normal color vision, in which parent and stage of meiosis did nondisjunction occur?
Answer:
It occurred in the mother and in meiosis II stage
Explanation:
A karyotype shows that a child has Klinefelter syndrome (47,XXY) which involves a male child having an XXY chromosome in which the XX chromosome codes from the mother.
If the child is also color-blind (due to a recessive X-linked allele), despite his parents having normal color vision then the nondisjunction occurred in meiosis II because sister chromatids separate during meiosis II and the non separation is the reason for the Klinefelter syndrome.
How are the current and resistance related when the voltage of a circuit is constant?
The current doubles when the resistance doubles because they are directly proportional.
The current doubles when the resistance doubles because they are inversely proportional.
The current is cut in half when the resistance doubles because they are directly proportional.
O The current is cut in half when the resistance doubles because they are inversely proportional.
Answer:
The current is cut in half when the resistance doubles because they are inversely proportional.
Explanation:
Ohm's law states that the electrical current (I) flowing in a circuit is proportional to the voltage (V) and inversely proportional to the resistance (R).
I = V/R
Similarly, increasing the resistance of the circuit will lower the current flow if the voltage is not changed.
HOPE IT HELPS.
Answer:
D
Explanation: