Important MCQs on Cell (TGT Biology) – Set 1


1. Who discovered the nucleus?
a) Robert Brown
b) Robert Hooke
c) Leeuwenhoek
d) Schwann
→ Ans: a) Robert Brown

2. Which cell organelle is responsible for cellular respiration?
a) Golgi body
b) Ribosome
c) Mitochondria
d) Vacuole
→ Ans: c) Mitochondria

3. The cell wall in plants is mainly made up of:
a) Glucose
b) Cellulose
c) Starch
d) Lipids
→ Ans: b) Cellulose

4. Protoplasm is composed of:
a) Cytoplasm + Nucleus
b) Cell wall + Cytoplasm
c) Ribosome + Golgi body
d) Mitochondria + ER
→ Ans: a) Cytoplasm + Nucleus

5. Which organelle is responsible for protein synthesis?
a) Golgi body
b) Ribosomes
c) Lysosomes
d) Vacuole
→ Ans: b) Ribosomes

6. Cell organelles are embedded in:
a) Nucleus
b) Cytoplasm
c) Cell wall
d) Vacuole
→ Ans: b) Cytoplasm

7. The largest cell in the human body is:
a) Nerve cell
b) Ovum
c) Liver cell
d) Muscle cell
→ Ans: b) Ovum

8. Which of the following is NOT present in an animal cell?
a) Cell membrane
b) Vacuole
c) Plastid
d) Nucleus
→ Ans: c) Plastid

9. The smallest living cell is:
a) Yeast
b) Mycoplasma
c) Amoeba
d) Bacteria
→ Ans: b) Mycoplasma

10. The fluid mosaic model explains:
a) DNA structure
b) Plasma membrane structure
c) Enzyme formation
d) Gene expression
→ Ans: b) Plasma membrane structure

11. The term “protoplasm” was coined by:
a) Purkinje
b) Hooke
c) Leeuwenhoek
d) Schleiden
→ Ans: a) Purkinje

12. Which organelle helps in intracellular transport?
a) Ribosomes
b) Endoplasmic reticulum
c) Lysosomes
d) Nucleus
→ Ans: b) Endoplasmic reticulum

13. Rough ER has a rough appearance due to:
a) DNA
b) Ribosomes
c) Lipids
d) Enzymes
→ Ans: b) Ribosomes

14. Chromosomes are made up of:
a) DNA only
b) DNA and protein
c) RNA only
d) Protein only
→ Ans: b) DNA and protein

15. In which part of the cell does photosynthesis occur?
a) Cytoplasm
b) Chloroplast
c) Mitochondria
d) Ribosomes
→ Ans: b) Chloroplast

16. Which organelle stores food, waste, and water?
a) Ribosome
b) Vacuole
c) Nucleus
d) ER
→ Ans: b) Vacuole

17. Which of the following is known as the “cell’s brain”?
a) Nucleolus
b) Golgi body
c) Nucleus
d) Ribosome
→ Ans: c) Nucleus

18. Cells which have no definite shape are:
a) RBC
b) Amoeba
c) Nerve cells
d) Bacteria
→ Ans: b) Amoeba

19. Cell division for growth and repair occurs through:
a) Meiosis
b) Binary fission
c) Mitosis
d) Budding
→ Ans: c) Mitosis

20. Plant cells generally have:
a) Small vacuoles
b) No nucleus
c) Large central vacuole
d) No mitochondria
→ Ans: c) Large central vacuole

21. The site of lipid synthesis is:
a) Rough ER
b) Smooth ER
c) Ribosome
d) Nucleus
→ Ans: b) Smooth ER

22. Which organelle is double membraned?
a) Ribosome
b) Lysosome
c) Mitochondria
d) Golgi body
→ Ans: c) Mitochondria

23. Bacterial cells reproduce by:
a) Mitosis
b) Meiosis
c) Binary fission
d) Fragmentation
→ Ans: c) Binary fission

24. The control center of all cellular activities is:
a) Cytoplasm
b) Plasma membrane
c) Nucleus
d) Ribosome
→ Ans: c) Nucleus

25. The organelle responsible for cell secretion is:
a) Golgi apparatus
b) Ribosome
c) Smooth ER
d) Chloroplast
→ Ans: a) Golgi apparatus