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sergejj [24]
4 years ago
7

Which one of the following would you predict is an allosteric inhibitor of the Krebs cycle enzyme, α-ketoglutarate dehydrogenase

?A) citric acidB) α-ketoglutaric acidC) NAD+D) NADHE) ADP
Biology
1 answer:
solong [7]4 years ago
7 0

Answer:

D) NADH

Explanation:

Allosteric inhibitor alters protein conformation in the active site of the enzyme by binding to allosteric site. It consequently changes shape of the active site due to which the enzyme is unable to perform catalytic activity and become inactive.

The reaction catalyzed by α-Ketoglutarate dehydrogenase is:

α-Ketoglutarate + NAD⁺ + CoA-SH ⇒ succinyl-CoA + NADH + H⁺ + CO₂

<u>α-Ketoglutarate dehydrogenase is inhibited by both succinyl CoA and NADH which are the products of reaction which it catalyzes. In addition to it, α-ketoglutarate dehydrogenase is also inhibited by high energy charge.</u>

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Plant cells are different from animal cells because they are usually —
SOVA2 [1]

Answer:

rectangular in shape, contain a large vacuole, and have chloroplasts.

4 0
3 years ago
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Contaminated hospital equipment represents a difficult environment to control harmful microbial growth. Regarding influences tha
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"Contaminated hospital equipment represents a difficult environment to control harmful microbial growth. Regarding influences that affect disinfection of hospital equipment, which of the following is an accurate statement?

  • Biofilms, often found contaminating hospital equipment, are relatively simple targets for biocides to reach effectively.
  • The presence of organic matter, such as dried blood or protein, will not affect the action of antimicrobial agents.
  • Antimicrobial agents work best under reduced temperatures.
  • The cell walls of gram-negative bacteria are especially resistant to many chemical that are used to destroy microbes. "

Biofilms are extracellular matrix formed by organisms. They are slimy and are used to attach to surfaces. They are made of polysachharides and form a barrier of protection against disinfectants. Therefore, they make it difficult to decontaminate surfaces.

Organic matter like dried blood or protein also affect the action of antimicrobial agents. Organic matter may form a layer that would reduce the access of the disinfection to the organism.

Antimicrobial agents are affected by temperature and have optimum temperature of action. Some get denatured by heat while some are unaffected. The temperature an antibiotic works will also depend on the organism and its mode of action.  

Gram negative bacteria have shown resistance to more antimicrobials.  

4 0
3 years ago
Which action would most likely increase the amount of carbon in the environment? A. Choosing to burn coal to generate electricit
scoray [572]

Answer:

A choosing to burn coal to generate electricity

Explanation:

Neither nuclear energy nor alternative sources such as wind and solar seem likely to meet the demand for electricity. ... Of all fossil fuels, coal puts out the most carbon dioxide per unit of energy, so burning it poses a further threat to global climate, already warming alarmingly.

4 0
4 years ago
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What are two plants whose stems store water?
dlinn [17]
Well, all plants do, but some of the most famous such as the cactus and <span>Mexican Poppies would be found in the deserts.</span>
8 0
4 years ago
How could the tomato plant’s response to being eaten by a hornworm caterpillar be described as a function of homeostasis?
Ad libitum [116K]

Answer:

The required answer is given below:

Explanation:

This can be clarified with the idea of induced resistance. it is the capacity of a plant to react to the specific compound delivered from the damaged body parts, The dispersion of the synthetic animates all different plants parts and different plants to be less delectable and thusly not wonderful to eat. In this manner the more the degree of harm to the plant, the higher the volume of synthetic compounds delivered, and consequently the less delicious the plants and lower the harms negative criticism instruments. Since this reestablished the plants to moderately consistent inner environments, this is homeostasis.

Hornworm caterpillar harms tomatoes plants leaves, leaving holes. When a tomato plant is eaten, it discharges a compound substance called methyl jasmonate. The last would be gotten by adjoining plant parts or other tomato plants. The open tomato plants hence turn out to be less scrumptious. Subsequently, the caterpillar in the wake of crushing the underlying aspect of the tomato plants would not have the option to proceed with the taking care of and in this manner feed on each other prompting their death, turning them to cannabis caterpillars.  

Since trying to keep up the generally consistent interior condition plant discharges methyl jasmonate to forestall further harm and in this manner guarantees the soundness of the plant.

6 0
4 years ago
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