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
baherus [9]
2 years ago
5

How does the fermentation of pyruvic acid in cells contribute to the formation of ATP? A. It completes the oxidation of glucose

to CO2, creating ATP. B. It generates lactic acid, which cycles back through the Krebs cycle, producing 2 ATP molecules. C. It converts FADH2 to phosphate, which bonds with ADP. D. It produces 2 NAD+ molecules, which cycle back to fuel the glycolysis reaction, allowing 2 ATP molecules to be produced.
Biology
2 answers:
earnstyle [38]2 years ago
7 0

Answer:

D. It produces 2 NAD+ molecules, which cycle back to fuel the glycolysis reaction, allowing 2 ATP molecules to be produced.

Explanation:

In both lactic and alcoholic fermentation there is a balance of only 2 ATP molecules and, in both processes, they start with pyruvic acid obtained from glycolysis.

In lactic fermentation pyruvic acid is reduced to lactate by the action of the enzyme lactate dehydrogenase, using hydrogen ions from the reoxidation of NADH2 formed in glycolysis. In this process occurs the production of 2 NAD + molecules, which return to feed the glycolysis reaction, allowing the production of 2 ATP molecules.

In alcoholic fermentation the pyruvic acid is converted to acetaldehyde through the pyruvate decarboxylase action, generating CO2 and NADH and reoxidizing NADH through alcohol dehydrogenase, acetaldehyde is converted to ethyl alcohol. This process also produces 2 NAD + molecules, which return to fuel the glycolysis reaction, allowing the production of 2 ATP molecules.

LuckyWell [14K]2 years ago
3 0

The correct answer is option D,

in the alcoholic fermentation, which  is a type of anaerobic respiration pyruvic acid is converted to ethanol and CO2  thereby creating NAD+ from NADH after glycolysis.


You might be interested in
In a long dna molecule, each origin of replication produces a _____ with a _____ on each side.
katrin [286]
Produces a replication bubble with a replication fork on each side.
3 0
3 years ago
The medical specialist that frequently determines the cause of death is the
Ad libitum [116K]
Answer:  board-certified "pathologist" (physician).
_________________________________________________
6 0
2 years ago
Which feature of earth is created at mid ocean ridges
777dan777 [17]

The correct answer is - underwater mountain ranges.

The mid-ocean ridges are actually underwater mountain ranges, which usually are very long, in fact the longest mountain range on Earth is created on the divergent boundary between the Eurasian and North American tectonic plates and between the African and South American tectonic plates. At the divergent tectonic boundaries we have the creation of new crust which rises from the mantle and fills in the gap between the tectonic plates. Because of the big amount of magma and high pressure, very big and long underwater mountain ranges are formed.

4 0
3 years ago
Read 2 more answers
Anything added to the environment that is harmful to living things is ?
Paladinen [302]

The other answer is wrong. It would be pollution. Hope this helps you!

3 0
2 years ago
Which type of molecule will require energy to cross the cell membrane? Question 3 options: A) carbon dioxide B) Na+ C) nonpolar
timofeeve [1]

Answer:

B) Na+

Explanation: Na+ molecule is polar, oxygen and carbon dioxide are nonpolar molecules. The cell membrane is a <em>phospholipid bilayer</em> made up of lipid molecules with polar and nonpolar ends. Since it is a bilayer, two phospholipid layers are arranged, one on the other in such a way that one faces the back of the other. The non polar ends are away from outside and inside of the cell, while  the polar ends faces towards all the molecules inside and outside the cell.

Since polar-polar molecules repel each other, Na+ can't pass through the cell membrane easily. So it uses the proteins attached the cell membrane inside and outside to transport such molecules by using energy in terms of ATP.

3 0
3 years ago
Other questions:
  • Which of the following terms means a type of thermal injury to the skin caused by heat source?
    14·1 answer
  • Which mineral is commonly found in the three metamorphic rocks slate, schist and gneiss
    15·1 answer
  • What is the objects acceleration
    9·1 answer
  • a trait that improves an individuals ability to survive and reproduce in a specific environment is called
    8·1 answer
  • Food web stability is most dependent on _____.
    10·1 answer
  • Select all of the following that plants
    7·1 answer
  • An organ that helps break down food but is not part of the tube through which the foodstuffs pass is referred to as a(n) _______
    5·1 answer
  • The allele that seems to go away is called​
    14·1 answer
  • What do the diagrams illustrate about the process of transgression?
    5·1 answer
  • The model shows an intended destination, a, of wind from the north pole. the actual destination is b. what is the reason for thi
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!