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
Dominik [7]
3 years ago
13

2. In gluconeogenesis, it takes two enzymes to convert pyruvate to phosphoenolpyruvate. a. Explain what is happening chemically

to the substrates in these two reactions.
Biology
1 answer:
Marina CMI [18]3 years ago
5 0

Answer:1. Pyruvate carboxylase

2. Phosphoenol pyruvate carboxy kinase

Explanation:

The conversion of pyruvate to phosphoenol pyruvate is catalyzed by two enzymes Pyruvate carboxylase and phosphoenol pyruvate carboxy kinase

1. Pyruvate carboxylase reaction

Pyruvate in the cytoplasm enters the mitochondria. Then, carboxylase of pyruvate to oxaloacetate is catalysed by a mitochondrial enzyme, pyruvate carboxylase. It needs the co-enzymes biotin and ATP.

The oxaloacetate formed has to be transported from the mitochondrial to the cytosol because further reaction of gluconeogenesis are taking place in cytosol.

2. Phoaphoenol pyruvate carboxy kinase (PEPCK)

In the cytoplasm, PEPCK enzyme then converts oxaloacetate to phoaphoenol pyruvate by removing a molecule of CO2. GTP or ITP donates the phosphate group.

The net effect of these two reactions is the conversion of pyruvate to phoaphoenol pyruvate. This circumverts the irreversible step in glycolysis catalyzed by pyruvate kinase (step 9 if glycolysis)

You might be interested in
How does climate change happen
tiny-mole [99]
Climate change happens by the circle of life
7 0
2 years ago
Read 2 more answers
Be aware of mudflows. the danger from a mudflow increases near stream channels and with prolonged heavy rains. mudflows can move
Anettt [7]

The mudflows are very dangerous and they have a great destructive power. They appear after a heavy rainfall on places that are steep. The mudflows are very fast and sudden occurrences, so usually people are caught unprepared. A mudflow is a mixture of water and lot of ground/mud, and all sorts of debris, which also contributes to it to be more dangerous.

8 0
2 years ago
Read 2 more answers
I NEEEEDDDDD HELP PLEASE
Morgarella [4.7K]

Answer:

First question is Yy

Explanation:

5 0
3 years ago
ANSWER THESE QUESTIONS AND I WILL MAKE ANOTHER FREE POINTS QUESTION FOR YOU!
LekaFEV [45]

Answer:

G1

Explanation:

G1 takes up half the chart so it only makes sense for that to be the answer

5 0
2 years ago
Read 2 more answers
Glucose is a reactant in the formula for photosynthesis
mezya [45]

Answer:

Explanation:

TL;DR (Too Long; Didn't Read) The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll, while the products are glucose (sugar), oxygen and water.

5 0
3 years ago
Other questions:
  • In a sample population of people, 36% have the recessive trait of "free" earlobes (q2). What is the frequency of the dominant al
    15·1 answer
  • Which scientist is matched with his contribution to evolutionary theory
    9·1 answer
  • What does c h o n s stand for
    8·1 answer
  • Lichens are composed of two organisms, a fungus
    14·1 answer
  • TRUE OR FALSE thermal energy causes water at the ocean surface to evaporate
    12·1 answer
  • Plant roots are more easily able to absorb ammonium that has been produced from
    6·1 answer
  • 9. Cell division is necessary for an organism to
    14·2 answers
  • What are the letters of the anticodon that should be in the three boxes labeled “Question #18” in the drawing below?
    5·1 answer
  • Please help quickly!!!!
    6·1 answer
  • What is the best name for this molecule?<br> maltose<br> sucrose<br> fructose<br> glucose
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!