Question

Match the location of the cell given in Column I with its function in Column II.

Column I		Column II
1.	Mitochondrial matrix	p.	Kreb's cycle
2.	Cytoplasm	q.	ETC
3.	F0 and F1	r.	Glycolysis
4.	Inner mitochondrial membrane	s.	ATP synthesis

• A. 1-p, 2-r, 3-s, 4-q
• B. 1-q, 2-s, 3-q, 4-r
• C. 1-r, 2-q, 3-p, 4-s
• D. 1-s, 2-p, 3-r, 4-q

Answer 1

The Correct Option is A

Let's match the cellular locations or components listed in Column I with their associated metabolic functions or processes listed in Column II:

• 1. Mitochondrial matrix: This is the space enclosed by the inner mitochondrial membrane. It contains the enzymes required for the Kreb's cycle (p) (also known as the Citric Acid Cycle).  
  So, 1 → p.
• 2. Cytoplasm: This is the material within a living cell, excluding the nucleus. The initial stage of cellular respiration, Glycolysis (r), occurs in the cytoplasm. 
  So, 2 → r.
• 3. F₀ and F₁: These refer to the F₀F₁ particles, which constitute the ATP synthase enzyme complex. This complex is directly responsible for ATP synthesis (s) during oxidative phosphorylation (and photophosphorylation). 
  So, 3 → s.
• 4. Inner mitochondrial membrane: This membrane is highly folded (into cristae) and contains the protein complexes of the Electron Transport Chain (ETC) (q) as well as the ATP synthase complex. The ETC operates across this membrane. 
  So, 4 → q.

The correct matching sequence is:

• 1 → p
• 2 → r
• 3 → s
• 4 → q

Comparing this to the options provided:

• 1-p, 2-r, 3-s, 4-q
• 1-q, 2-s, 3-q, 4-r
• 1-r, 2-q, 3-p, 4-s
• 1-s, 2-p, 3-r, 4-q

The correct option is 1-p, 2-r, 3-s, 4-q.

Answer 2

Let's evaluate the correct matching of the locations with their corresponding functions:

Mitochondrial matrix: The Krebs cycle (also known as the citric acid cycle) takes place in the mitochondrial matrix.

• Correct match: 1 → p (Krebs cycle).

Cytoplasm: Glycolysis, which is the breakdown of glucose into pyruvate, occurs in the cytoplasm.

• Correct match: 2 → r (Glycolysis).

F0 and F1 (parts of ATP synthase): These components are involved in ATP synthesis during oxidative phosphorylation.

• Correct match: 3 → s (ATP synthesis).

Inner mitochondrial membrane: The electron transport chain (ETC) occurs on the inner mitochondrial membrane, where electrons are transferred and ATP is produced.

• Correct match: 4 → q (ETC).

Correct Matching:

1 → p (Krebs cycle)
2 → r (Glycolysis)
3 → s (ATP synthesis)
4 → q (ETC)

The correct answer is (A) : 1-p, 2-r, 3-s, 4-q.