Science / Principle Behind Lactic Acid Fermentation

Question 1

Lactic acid fermentation converts ______ to _______

Answer 1

3-carbon pyruvate to the 3-carbon lactic acid (C3H6O3)

Question 2

During LAF, it converts the 3-carbon pyruvate to the 3-carbon lactic acid and ____ NAD+?

This NAD+ allows ______ to continue to make ____ in ______.

Answer 2

regenerates, glycolysis, ATP, Low-oxygen conditions

Question 3

How does NAD+ regenerated?

Answer 3

NADH donates its extra electrons (or oxidizing) to the pyruvate molecules, regenerating NAD+

Question 4

Lactic acid is formed by?

Answer 4

reduction of pyruvate

Question 5

Is NAD+ an electron acceptor?

Answer 5

Yes

Question 6

Lactic acid fermentation converts _____ and regenerates _____?

Answer 6

Lactic acid fermentation converts pyruvate to lactic acid, and regenerates NAD+
from NADH

Question 7

How does LAF makes ATP in absence of oxygen?

Answer 7

by converting glucose
to lactic acid.

Question 8

Explain and name the process: C3H3O3 (pyruvate) + NADH → C3H6O3 (lactic acid) + NAD+

Answer 8

Lactic acid fermentation, it converts pyruvate to lactic acid and regenerates NAD+ from NADH.

Question 9

What is the Chemical Reaction of Lactic Acid Fermentation?

Answer 9

C6H12O6 → 2C3H6O3 + 2 CO2 + 2AT

or

Glucose → lactic acid + carbon dioxide + energy