Cell Biology Practice Questions
HSC/SSC (Bangladesh) · HSC Biology · 126 free MCQs with instant results and detailed explanations.
126
Total
32
Easy
62
Medium
32
Hard
Start Practicing Cell Biology
Take a timed quiz or customize your practice session
Sample Questions from Cell Biology
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
Which organelle is responsible for energy production in the cell?
A.
Ribosome
B.
Mitochondria
C.
Nucleus
D.
Golgi Apparatus
Show Answer & Explanation
Correct Answer: B
Mitochondria are known as the powerhouses of the cell because they convert nutrients into energy through cellular respiration.
Q2
Easy
What structure regulates the entry and exit of substances in a cell?
A.
Cell wall
B.
Chloroplast
C.
Cell membrane
D.
Endoplasmic reticulum
Show Answer & Explanation
Correct Answer: C
The cell membrane, also known as the plasma membrane, controls the movement of substances in and out of the cell, maintaining homeostasis.
Q3
Easy
What is the main function of the cell membrane?
A.
To provide energy to the cell
B.
To control the movement of substances in and out of the cell
C.
To store genetic information
D.
To produce proteins
Show Answer & Explanation
Correct Answer: B
The cell membrane primarily functions to regulate the entry and exit of substances, thus maintaining homeostasis within the cell.
Q4
Medium
Which organelle is primarily responsible for ATP production in a cell?
A.
Ribosome
B.
Mitochondrion
C.
Lysosome
D.
Golgi apparatus
Show Answer & Explanation
Correct Answer: B
The mitochondrion is known as the powerhouse of the cell because it generates ATP through cellular respiration, making option B the correct answer.
Q5
Medium
Which of the following processes occurs in the nucleus of a cell?
A.
Translation
B.
Transcription
C.
Glycolysis
D.
Citric Acid Cycle
Show Answer & Explanation
Correct Answer: B
Transcription, the process of synthesizing RNA from a DNA template, occurs in the nucleus, making option B the correct answer.
Q6
Medium
What is the primary function of the smooth endoplasmic reticulum (SER)?
A.
Protein synthesis
B.
Lipid synthesis
C.
DNA replication
D.
Cell division
Show Answer & Explanation
Correct Answer: B
The smooth endoplasmic reticulum (SER) is primarily involved in lipid synthesis and metabolism, thus option B is correct.
Q7
Medium
Which of the following statements about the plasma membrane is TRUE?
A.
It is impermeable to all substances.
B.
It is composed solely of proteins.
C.
It regulates the movement of substances in and out of the cell.
D.
It is rigid and inflexible.
Show Answer & Explanation
Correct Answer: C
The plasma membrane is selectively permeable, meaning it regulates what enters and exits the cell, so option C is the correct answer.
Q8
Hard
Which of the following cellular structures is primarily responsible for ATP production in the cell?
A.
Mitochondria
B.
Ribosomes
C.
Endoplasmic Reticulum
D.
Golgi Apparatus
Show Answer & Explanation
Correct Answer: A
Mitochondria are known as the powerhouses of the cell because they generate ATP through cellular respiration. Ribosomes are involved in protein synthesis, while the endoplasmic reticulum and Golgi apparatus are involved in the synthesis and transport of proteins and lipids, respectively.
Q9
Hard
In a cellular osmosis experiment, if a cell with a 0.5 M salt concentration is placed in a 0.2 M salt solution, what will happen to the cell?
A.
The cell will swell.
B.
The cell will shrink.
C.
The cell will remain the same size.
D.
The cell will burst.
Show Answer & Explanation
Correct Answer: B
In this scenario, the cell has a higher salt concentration compared to the surrounding solution. Water will move out of the cell (where salt concentration is higher) to the area of lower concentration (the external solution), causing the cell to shrink.
Q10
Hard
Which of the following cellular processes directly involves the use of ATP as an energy source for the synthesis of proteins from amino acids?
A.
Translation
B.
Transcription
C.
Replication
D.
Cellular respiration
Show Answer & Explanation
Correct Answer: A
Translation is the process where ribosomes synthesize proteins using mRNA and amino acids, requiring ATP for the activation of amino acids and the formation of peptide bonds.
Showing 10 of 126 questions. Start a quiz to practice all questions with scoring and timer.
Practice All 126 Questions →Other HSC/SSC (Bangladesh) Subjects
Cell Biology — HSC/SSC (Bangladesh) HSC Biology Practice Questions Online
This page contains 126 practice MCQs for the chapter Cell Biology in HSC/SSC (Bangladesh) HSC Biology. The questions are organized by difficulty — 32 easy, 62 medium, 32 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.