Question

Match List I with List II regarding cellular processes and their specific locations within the cell: \begin{center} \begin{tabular}{ll} List I (Process) & List II (Location)
A. Glycolysis & I. Inner mitochondrial membrane
B. ETS & II. Mitochondrial matrix
C. Accumulation of protons & III. Cytoplasm
D. Krebs' cycle & IV. Intermembrane space
\end{tabular} \end{center} Choose the correct answer from the options given below:

• A. A-IV, B-II, C-I, D-III
• B. A-I, B-IV, C-III, D-II
• C. A-II, B-III, C-IV, D-I
• D. A-III, B-I, C-IV, D-II

Hint:

Think of the Matrix as the "Inside Room" (Krebs) and the Intermembrane Space as the "Pressure Tank" (Proton accumulation) that drives the ATP turbine!

Answer 1

The Correct Option is D

Step 1 : Understanding the Question
This question focuses on cellular respiration, requiring the matching of metabolic processes with their specific anatomical locations within the cell.
Step 2 : Key Formulas and approach
The approach involves mental mapping: $\text{Cytoplasm} \rightarrow \text{Outer Membrane} \rightarrow \text{Intermembrane Space} \rightarrow \text{Inner Membrane} \rightarrow \text{Matrix}$.
Step 3 : Detailed Explanation

Glycolysis (A): Occurs in the (A) cytoplasm. It is the universal first step. (A-III).

ETS (B): The electron transport chain is located on the (B) inner mitochondrial membrane. (B-I).

Proton Pool (C): During ETS, protons are pumped into the (C) intermembrane space. (C-IV).

Krebs' Cycle (D): This enzymatic cycle occurs in the fluid (D) mitochondrial matrix. (D-II).

Step 4 : Final Answer
The correct matching is A-III, B-I, C-IV, D-II. This is found in option (C).