Glucose is broken down in different ways, both in the presence and in the absence of oxygen.

using the table for reference, what major products are formed in each reaction set?

reaction set major products
glycolysis a
krebs cycle b
ets c
lactic acid fermentation d

answer 1
a. adp, nadh

b. atp, nad+

c. atp

d. pyruvic acid, nad+

answer 2
a. pyruvic acid, atp, nadh

b. atp, fadh2, nadh

c. atp

d. nad+

answer 3
a. atp, nadh

b. adp, fad, nad+

c. pyruvic acid, atp

d. nadh

answer 4
a. adp, fadh2, nadh

b. atp, fadh2

c. atp

d. nad+

MAY BE THE ANSWER IS (2) BECAUSE GLYCOSIS IS THE PROCESS IN WHICH THE CONVERSION OF 6 C GLUCOSE INTO PYRUVATE INSIDE THE CYTOPLASM

The Option 2

A. pyruvic acid, ATP, NADH

B. ATP, FADH2, NADH

C. ATP

D. NAD+

Explanation:

In glycolysis, which is the breakdown of  glucose into two molecules of pyruvate with the release of energy, the major products are pyruvate, ATP and NADH, which is an energy electron carrier, and this process begins in the cytoplasm.

Krebs' Cycle occurs in the presence of oxygen releasing one molecule of guanosine triphosphate which donates one phosphate group to ADP to form ATP, three molecules of NAD which is then reduced to NADH, one molecule of FAD which is reduced to FADH2.

In electron transport chain, ATP is produced. In lactic acid fermentation, which is the pathway involved in the absence of oxygen releasing NAD+ as its major product.