Q93 (2024)
Match List I with List II :
<div style="overflow-x: auto; margin: 1rem 0;"><table style="width: 100%; border-collapse: collapse; text-align: left; font-size: 14px;"><thead><tr><th style="border: 1px solid #888; padding: 8px;"></th><th style="border: 1px solid #888; padding: 8px;">List-I (Phase of cell cycle)</th><th style="border: 1px solid #888; padding: 8px;"></th><th style="border: 1px solid #888; padding: 8px;">List-II (Activity)</th></tr></thead><tbody><tr><td style="border: 1px solid #888; padding: 8px;">A.</td><td style="border: 1px solid #888; padding: 8px;">$G_1$ phase</td><td style="border: 1px solid #888; padding: 8px;">I.</td><td style="border: 1px solid #888; padding: 8px;">Actual cell division occurs</td></tr><tr><td style="border: 1px solid #888; padding: 8px;">B.</td><td style="border: 1px solid #888; padding: 8px;">S phase</td><td style="border: 1px solid #888; padding: 8px;">II.</td><td style="border: 1px solid #888; padding: 8px;">Cell is metabolically active and continuously grows but does not replicate its DNA</td></tr><tr><td style="border: 1px solid #888; padding: 8px;">C.</td><td style="border: 1px solid #888; padding: 8px;">$G_2$ phase</td><td style="border: 1px solid #888; padding: 8px;">III.</td><td style="border: 1px solid #888; padding: 8px;">Synthesis of DNA occurs and the amount of DNA per cell doubles</td></tr><tr><td style="border: 1px solid #888; padding: 8px;">D.</td><td style="border: 1px solid #888; padding: 8px;">M phase</td><td style="border: 1px solid #888; padding: 8px;">IV.</td><td style="border: 1px solid #888; padding: 8px;">Proteins are synthesized while cell growth continues</td></tr></tbody></table></div>
Choose the correct answer from the options given below :
- A-II, B-III, C-IV, D-I
- A-III, B-IV, C-I, D-II
- A-I, B-II, C-III, D-IV
- A-IV, B-I, C-II, D-III
### Related Formula
$G_1$: Metabolically active growth
S: DNA replication ($2C \rightarrow 4C$)
$G_2$: Protein synthesis
M: Actual division
### Core Logic
- $G_1$ phase: Cell is metabolically active and continuously grows without DNA replication $\rightarrow$ II
- S phase: DNA synthesis occurs and DNA doubles $\rightarrow$ III
- $G_2$ phase: Protein synthesis occurs in preparation for mitosis $\rightarrow$ IV
- M phase: Actual cell division occurs $\rightarrow$ I
### Step 1: Match Verification
Matching pairs: A-II, B-III, C-IV, D-I. This matches Option (1).
### Pattern Recognition
S-phase = DNA synthesis/doubling. M-phase = Actual division. Instant match elimination gives option 1.
### Evaluation Rubric / Model Answer
null
### Chapter Mix
Class 11 Biology: Cell Cycle and Cell Division
