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Gelneren [198K]
3 years ago
8

The pyruvate dehydrogenase complex is subject to allosteric control, especially inhibition by reaction products. The main regula

tory process controlling pyruvate dehydrogenase's activity in eukaryotes is
Biology
1 answer:
evablogger [386]3 years ago
3 0

Answer:

phosphorylation by ATP and dephosphorylation, which turn off/on the complex

Explanation:

The pyruvate dehydrogenase complex consists of three different enzymes capable of converting pyruvate into acetyl-CoA. The enzymes that form the pyruvate dehydrogenase complex are pyruvate dehydrogenase (E1), dihydrolipoyl transacetylase (E2) and dihydrolipoyl dehydrogenase (E3). In eukaryotic organisms, the pyruvate dehydrogenase complex is controlled by pyruvate dehydrogenase kinase and pyruvate dehydrogenase phosphatase, which turn off and turn on the complex, respectively. In this mechanism, pyruvate dehydrogenase kinase phosphorylates (using ATP) to target serine residues in E1 subunit, while pyruvate dehydrogenase phosphatase dephosphorylates this subunit, thereby deactivating and activating the complex, respectively.

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To take in matter or energy<br> collection<br> liver<br> composition<br> absorption<br> Ok
kolbaska11 [484]
Answer: absorption
Explanation: “The process or action by which one thing absorbs or is absorbed by another.”
In this case, matter and energy is absorbed.
3 0
3 years ago
Which word identifies the agent that carries the energy released from earthquakes?
Mnenie [13.5K]

The correct answer is seismic waves.  

A sudden movement of the Earth's crust followed by the production of seismic waves is known as an earthquake. The seismic waves travel outwards from the source. The sudden vibration or ground motion is generated due to a brisk discharge of accumulated energy.  

The vibrations, which travel via Earth carrying the energy discharged at the time of an earthquake is known as seismic waves. The earthquakes are usually determined with a help of seismometer, called seismograph.  


4 0
3 years ago
Read 2 more answers
Suppose one parent is heterozygous for a dominant disorder and the other parent is homozygous normal. Draw a pedigree showing th
Radda [10]

There is only two possible offspring.

Bb and bb

Homo is the same

Hetero is different

            b               b

B     <u> Bb </u>              <u> Bb</u>

   

b       <u> bb  </u>               <u> bb </u>

                             

3 0
4 years ago
Pyruvate carboxylase and phosphoenolpyruvate carboxykinase catalyze reactions of gluconeogenesis that bypass the reaction of gly
dem82 [27]

Pyruvate carboxylase and phosphoenolpyruvate carboxykinase catalyze reactions of gluconeogenesis that bypass the reaction of glycolysis that is catalyzed by pyruvate kinase.

<h3>Gluconeogenesis:</h3>

The tissues of some organs, including the brain, the eye, and the kidney, use glucose as their primary or only source of metabolic fuel. Glycogen stores become exhausted during a protracted fast or intense exercise, and glucose must be created from scratch to keep blood glucose levels stable. The process through which glucose is created from non-hexose precursors such glycerol, lactate, pyruvate, and glucogenic amino acids is known as gluconeogenesis.

Glycolysis is effectively reversed during glucose synthesis. However, gluconeogenesis makes use of four distinct enzymes to skip the three highly exergonic (and essentially irreversible) phases of glycolysis. The pyruvate carboxylase, PEP carboxykinase, fructose 1,6-bisphosphatase, and glucose 6-phosphatase enzymes are specific to gluconeogenesis. Gluconeogenesis can only take place in particular tissues because these enzymes are not found in all cell types. In humans, the liver and, to a lesser extent, the renal cortex are the primary locations for gluconeogenesis.

Learn more about Gluconeogenesis here:

brainly.com/question/14838756

#SPJ4

8 0
2 years ago
Scenario 1
velikii [3]

The population of Green-feathered birds decreases due to prefer other colour of male birds.

<h3>Why the population of Green-feathered birds decreases?</h3>

Green-feathered birds are becoming less and less common because of the female bird that choses the blue and red colour male for mating instead of green so that's why the population of Green-feathered birds decreases.

Learn more about mechanism here: brainly.com/question/1320373

3 0
2 years ago
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