Explore topic-wise MCQs in Biology.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

1.

Statement A: Pumps are proteins that use energy to carry substances across the cell membrane.
Statement B: They transport substances from high concentration to low concentration.

A. Both the statements are true
B. Both the statements are false
C. Statement A is true but Statement B is false
D. Statement B is true but Statement A is false
Answer» D. Statement B is true but Statement A is false
Discussion
2.

Porins are not present in _____

A. plastids
B. bacteria
C. mitochondria
D. golgi complex
Answer» E.
Discussion
3.

Diffusion is fastest in ________

A. carbohydrates
B. proteins
C. lipids
D. vitamins
Answer» D. vitamins
Discussion
4.

Diffusion is mainly a ________

A. mechanical process
B. physical process
C. chemical process
D. biological process
Answer» C. chemical process
Discussion
5.

Which among the following is not the property of proteins present in the membrane that support facilitated diffusion?

A. Not liable to saturate
B. Response to inhibitors
C. Regulated by hormones
D. Highly selective
Answer» B. Response to inhibitors
Discussion
6.

Statement A: Active transport of molecules is an uphill movement.
Statement B: Simple diffusion is non-selective process.

A. Both the statements are true
B. Both the statements are false
C. Statement A is true but Statement B is false
D. Statement B is true but Statement A is false
Answer» B. Both the statements are false
Discussion
7.

Which of the following does not affect the rate of diffusion?

A. Temperature
B. Pressure
C. ATP available
D. Concentration gradient
Answer» D. Concentration gradient
Discussion
8.

Diffusion is a common process in fluids, but diffusion in solids rather than of solids is more likely.

A. True
B. False
Answer» B. False
Discussion