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
What are the 2 elements involved in the sun's production of energy?
tatuchka [14]
There is only one main element involved in the fusion reactions inside the sun; Hydrogen, but if you need a second element then it is more than likely that the question is asking for the isotope of hydrogen that is called <span>deuterium.

So basically, Hydrogen and Deuterium; an isotope of hydrogen</span>
8 0
3 years ago
Sections in the crust bend sharply to form mountains as a result of sections in the crust bend sharply to form mountains as a re
attashe74 [19]
An uplift from earths crust
8 0
2 years ago
Which of the following types of organisms can sometimes produce antibiotics naturally?
icang [17]
Some antibiotics can be naturally produced by fungi
7 0
3 years ago
Read 2 more answers
What type of relationship exists between tides and time?
Damm [24]
The relationship that exists between tides and time is that as night come tides expand and in the daytime tides contract
6 0
3 years ago
En los seres vivos acuaticos el oxigeno es tomado del __________ y penetra a la celula por el fenomeno de ___________
andrezito [222]

Answer:

En los seres vivos acuáticos el oxigeno es tomado del <u><em>agua</em></u> y penetra a la célula por el fenómeno de <em><u>respiración branquial.</u></em>

Explanation:

La respiración es el proceso mediante el cual los seres vivos obtienen oxígeno.  Es decir, la respiración implica el reemplazo del dióxido de carbono en los pulmones por oxígeno del aire, y puede ser pulmonar, branquial, traqueal o cutánea.

La respiración branquial es un tipo de respiración propia de la mayoría de los animales acuáticos y se lleva a cabo en las branquias, unas estructuras con forma de láminas que contienen vasos sanguíneos. Los animales acuáticos dispone de estos órganos que permiten absorber el oxígeno que se encuentra en el agua y eliminar el dióxido de carbono.

El agua que entra por la boca y circula por las branquias, donde el oxígeno es absorbido, pasa a la sangre y es transportado a todo el cuerpo donde se produce una respiración celular.

Es decir, <em><u>en los seres vivos acuáticos el oxigeno es tomado del agua y penetra a la célula por el fenómeno de respiración branquial.</u></em>

5 0
2 years ago
Other questions:
  • Which are replicated during interphase?
    14·2 answers
  • What is the pathway oxygen/ carbon dioxide take into and out of the body?
    7·1 answer
  • When magma reaches the surface of the earth, it is called​<br><br>plz help
    8·2 answers
  • A cell is considered cancerous when it acquires a mutation that makes it unable to regulate its cell cycle and, as a result, div
    13·1 answer
  • Why can a deficiency in all types of blood cells cause bruising?
    15·1 answer
  • If nondisjunction occurs and and an individual survives which disorder can occur
    5·1 answer
  • What is Gametogenisis
    11·1 answer
  • What conclusion about Japan's farmland can be made by studying the map?
    12·1 answer
  • Florida course 3 elevate science book, on page 108, it says is there any matter in figure 1 that you cannot see, what is the ans
    10·1 answer
  • Which of the following is a compound?<br> pizza<br> oxygen<br> brass<br> table salt
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!