Question

The pathway of respiration common in all living organisms is X ; it occurs in the Y and the
products formed are two molecules of Z . Identify X Y Z and select the correct answer.
X Y Z
A. Glycolysis Mitochondria Pyruvic acid
B. Glycolysis Cytoplasm Pyruvic acid
C. Citric acid cycle Cytoplasm Phosphate
D. Kreb’s cycle Mitochondria Acetyl CoA

Answer 1

Answer:

The pathway of respiration common in all living organisms is X ; it occurs in the Y and the

products formed are two molecules of Z . Identify X Y Z and select the correct answer.

X Y Z

A. Glycolysis Mitochondria Pyruvic acid

B. Glycolysis Cytoplasm Pyruvic acid

C. Citric acid cycle Cytoplasm Phosphate

D. Kreb’s cycle Mitochondria Acetyl CoA

Explanation:

Answer 2

B. Glycolysis Cytoplasm Pyruvic acid are X, Y and Z.

• Glycolysis is the anaerobic process that takes place in cytoplasm.
• The process generates net 2 ATP as 4 ATP are produced and 2 ATP are used.
• The products of glycolysis are utilised further in Kreb's cycle and oxidative phosphorylation.
• Two molecules of pyruvic acid or pyruvate are produced as the end product.
• Kreb's cycle and oxidative phosphorylation are aerobic process that take place in mitochondria.