1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aleksandr [31]
3 years ago
9

The first glycolysis rate-limiting enzyme is under various allosteric regulations. This protein is nearly inactive because of in

hibition by ( ) under physiological conditions. The activity is restored by ( ), its most potent allosteric activator.
a. AMP :::: citrate
b. AMP :::: Fru-2,6-P2
c. ATP :::: citrate
d. ATP :::: Fru-2,6-P2
e. All of these
Biology
1 answer:
navik [9.2K]3 years ago
6 0

Answer:

d. ATP;  Fructose-2,6-bisphosphate

Explanation:

Phosphofructokinase-1 is the enzyme that catalyzes the formation of fructose-1,6-bisphosphate from fructose-6-phosphate and ATP. The phosphofructokinase step is the first rate-limiting step of glycolysis.

Phosphofructokinase-1 activity is allosterically regulated. Its activity is increased whenever the cell's ATP supply is depleted or when its breakdown products, ADP and AMP accuulates in he cell. However, it is inhibited when the cell is amply supplied with ATP.

The activity of phosphofructokinase-1 is restored by fructose-2,6-bisphosphate, its most potent activator.

From the given options:

a. AMP :::: citrate  is wrong because AMP increases the activity of phosphofructokinase-1 and citrate is not its activator but an inhibitor

b. AMP :::: Fru-2,6-P2  is wrong because AMP increases its activity same as fructose-2,6-bisphosphate

c. ATP :::: citrate  is wrong because both citrate and ATP are inhibitors

d. ATP :::: Fru-2,6-P2  is correct as explained above

e. All of these is wrong because of the other wrong options above.

You might be interested in
Which of the following organelles would be affected first if there were no lipids present to allow nutrients to enter the cell a
Volgvan
I think the answer is b
4 0
2 years ago
Molecules that cut dna at specific sequences are known as​
Neko [114]

Answer:

Restriction enzyme, also called restriction endonuclease, a protein produced by bacteria that cleaves DNA at specific sites along the molecule

Explanation:

Hope it helps

3 0
3 years ago
The temperatures in the taiga can vary greatly, from an average low of _____ in the winter, to a high of _____ in the summer A:
Digiron [165]

Answer:

A: -65 degrees F; 70 degrees F

Explanation:

6 0
3 years ago
The suns energy is most useful to humans after its converted to?
blondinia [14]

The answer is D) heat

3 0
3 years ago
Name 4 body structures composed of protein
KatRina [158]
Collagen protein fibers are located in many parts of the body, including the muscles, tendons, ligaments, and bones. Collagen and another protein called elastin are often found together.
8 0
3 years ago
Other questions:
  • A paraphilic disorder in which the individual is preoccupied with an object and depends on this object rather than sexual intima
    10·1 answer
  • RNA A long, collection of genes that carries heredity information and is formed from condensed chromatin.
    15·2 answers
  • if a genetic error occurred, resulting in each liver cell in a person having only 1,000 insulin receptors, what specific effect
    13·2 answers
  • Which feature does not result from seismic activity?
    15·1 answer
  • What is one way of describing elements?
    13·2 answers
  • Which of the following statements is true? Natural energy sources are nonrenewable and being depleted. Current fuels are not pol
    15·2 answers
  • Is it normal to lose a lot of weight after having a stomach bug?
    8·1 answer
  • Select all that apply. The two bones of the lower arm are _____. radius humerus ulna tibia femur
    12·2 answers
  • Piz help fast!!!!!! thx​
    11·1 answer
  • Pls I dont understand this
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!