BIOD 101 MODULE 2 EXAM – 2026/2027
QUESTIONS & VERIFIED ANSWERS (A+
GUARANTEE)
1. Which organelle is responsible for the synthesis of lipids and the detoxification of drugs
and poisons?
A. Smooth Endoplasmic Reticulum
B. Rough Endoplasmic Reticulum
C. Golgi Apparatus
D. Lysosome
Answer: A
Conceptual Explanation: The smooth ER lacks ribosomes and is specialized for lipid
synthesis, carbohydrate metabolism, and detoxification.
2. In which phase of the cell cycle does DNA replication occur?
A. G1 Phase
B. S Phase
C. G2 Phase
D. M Phase
,Answer: B
Conceptual Explanation: The S (Synthesis) phase is the specific part of interphase where
the cell duplicates its DNA.
3. What is the primary function of the nucleolus?
A. Storage of genetic information
B. Production of ribosomal RNA (rRNA)
C. ATP synthesis
D. Protein folding
Answer: B
Conceptual Explanation: The nucleolus is a dense region within the nucleus where rRNA
is synthesized and ribosomal subunits are assembled.
4. If a cell is placed in a hypertonic solution, what will be the net movement of water?
A. Water moves into the cell, causing it to swell.
B. There is no net movement of water.
C. Water moves out of the cell, causing it to shrink.
D. Water moves into the nucleus only.
Answer: C
, Conceptual Explanation: In a hypertonic solution, the solute concentration is higher
outside the cell, drawing water out via osmosis and leading to crenation (shrinking).
5. Which type of junction allows for direct electrical and chemical communication between
adjacent cells?
A. Tight Junctions
B. Desmosomes
C. Gap Junctions
D. Adherens Junctions
Answer: C
Conceptual Explanation: Gap junctions consist of connexons that form channels, allowing
ions and small molecules to pass between cells.
6. The Sodium-Potassium pump is an example of what type of transport?
A. Facilitated Diffusion
B. Primary Active Transport
C. Simple Diffusion
D. Secondary Active Transport
Answer: B
Conceptual Explanation: The Na+/K+ pump uses ATP directly to move ions against their
concentration gradients, making it primary active transport.
QUESTIONS & VERIFIED ANSWERS (A+
GUARANTEE)
1. Which organelle is responsible for the synthesis of lipids and the detoxification of drugs
and poisons?
A. Smooth Endoplasmic Reticulum
B. Rough Endoplasmic Reticulum
C. Golgi Apparatus
D. Lysosome
Answer: A
Conceptual Explanation: The smooth ER lacks ribosomes and is specialized for lipid
synthesis, carbohydrate metabolism, and detoxification.
2. In which phase of the cell cycle does DNA replication occur?
A. G1 Phase
B. S Phase
C. G2 Phase
D. M Phase
,Answer: B
Conceptual Explanation: The S (Synthesis) phase is the specific part of interphase where
the cell duplicates its DNA.
3. What is the primary function of the nucleolus?
A. Storage of genetic information
B. Production of ribosomal RNA (rRNA)
C. ATP synthesis
D. Protein folding
Answer: B
Conceptual Explanation: The nucleolus is a dense region within the nucleus where rRNA
is synthesized and ribosomal subunits are assembled.
4. If a cell is placed in a hypertonic solution, what will be the net movement of water?
A. Water moves into the cell, causing it to swell.
B. There is no net movement of water.
C. Water moves out of the cell, causing it to shrink.
D. Water moves into the nucleus only.
Answer: C
, Conceptual Explanation: In a hypertonic solution, the solute concentration is higher
outside the cell, drawing water out via osmosis and leading to crenation (shrinking).
5. Which type of junction allows for direct electrical and chemical communication between
adjacent cells?
A. Tight Junctions
B. Desmosomes
C. Gap Junctions
D. Adherens Junctions
Answer: C
Conceptual Explanation: Gap junctions consist of connexons that form channels, allowing
ions and small molecules to pass between cells.
6. The Sodium-Potassium pump is an example of what type of transport?
A. Facilitated Diffusion
B. Primary Active Transport
C. Simple Diffusion
D. Secondary Active Transport
Answer: B
Conceptual Explanation: The Na+/K+ pump uses ATP directly to move ions against their
concentration gradients, making it primary active transport.
