Question

4) Nucleic acids
134. The following is a simplified scheme showing
the fate of glucose during aerobic and anaerobic
respiration. Identify the end products that are
formed at stages indicated as A, B, C and D.
Identify the correct option from those given
below.
Glucose
Glycolysis
ATION
Presence of oxygen
Absence of oxygen
Kreb's cycle
Fermenation
Bacteria
Yeast
B
D
1) A-Carbon dioxide and water, B-Pyruvic acid,
C-Ethyl alcohol and carbon dioxide,
D-Lactic acid
2) A-Pyruvic acid, B-Carbon dioxide and water,
C-Lactic acid, D-Ethyl alcohol and carbon
dioxide
3) A-Pyruvic acid, B- Carbon dioxide and water
C-Ethyl alcohol and carbon dioxide
D-Lactic acid
4) A-Pyruvic acid, B-Ethyl alcohol and carbon
dioxide, C-Lactic acid, D-Carbon dioxide an
water​

Answer 1

Answer:

Pyruvic acid is the final product of glycolysis. Krebs cycle releases CO2 and water. As a result of fermentation in bacteria, lactic acid is produced.