MULTIPLE CHOICE QUESTIONS:(MCQ’s)
1. The smallest functional unit of life is called ___________.
2. The outermost covering of the cell that separates the contents of the cell from its external environment.
3. The ______ allows the entry and exit of some materials in and out of the cell.
4. Plasma Membrane have another rigid outer covering called _________.
5. The nucleus has double – layered covering is called ___________.
6. The root hair absorbs water by the process called _________.
7. Proteins are formed in __________.
8. The plant cells are more rigid than the animal cell due to ____________.
9. The movement of particles or molecules from a region of higher concentration to a region of lower concentration is called __________.
10. ________ is the cleansing organelle in the cell.
11. The energy currency of the cell is ______
12. __________help in protein synthesis.
13. _________ are found in chromosomes.
14. __ is known as powerhouse of the cell.
15. __________refers to cytoplasm and nucleus.
16. Chromosomes are made up of ____
(a) DNA
(b) Protein
(c) DNA and protein
(d) RNA
17. Which of these options are not a function of ribosomes?
(i) It helps in manufacture of protein molecules.
(ii) It helps in manufacture of enzymes.
(iii) It helps in manufacture of hormones.
(iv) It helps in manufacture of starch molecules.
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (iv) and (i)
(a) Breakdown of plasma membrane in hypotonic medium
(b) Shrinkage of cytoplasm in hypertonic medium
(c) Shrinkage of nucleoplasm
(d) None of them
19. Which of the following are covered by a single membrane?
(a) Mitochondria
(b) Vacuole
(c) Lysosome
(d) Plastid
20. Which cell organelle plays a crucial role in detoxifring many poisons and drugs in a cell?
(a) Golgi apparatus
(b) Lysosomes
(c) Smooth endoplasmic reticulum
(d) Vacuoles
21. The proteins and lipids, essential for building the cell membrane, are manufactured by ___
(a) Rough endoplasmic reticulum
(b) Golgi apparatus
(c) Plasma membrane
(d) Mitochondria
22. The undefined nuclear region of prokaryotes is also known as ____
(a) Nucleus
(b) Nucleolus
(c) Nucleic acid
(d) Nucleoid
23. The cell organelle involved in forming complex sugars from simple sugars are ___
(a) Endoplasmic reticulum
(b) Ribosomes
(c) Plastids
(d) Golgi apparatus
24. Which out of the following is not a function of vacuole?
(a) Storage
(b) Providing turgidity and rigidity to the cell
(c) Waste excretion
(d) Locomotion
25. Amoeba acquires its food through a process, termed ____
(a) Exocytosis
(b) Endocytosis
(c) Plasmolysis
(d) Exocytosis and Endocytosis
26. Cell wall of which one of these is not made up of cellulose?
(a) Bacteria
(b) Hydrilla
(c) Mango tree
(d) Cactus
27. Organelle other than nucleus, containing DNA is ____
(a) Endoplasmic reticulum
(b) Golgi apparatus
(c) Mitochondria
(d) Lysosomes
28.The _______is a large network of membrane bound tubes and sheets
(a) Endoplasmic reticulum
(b) Golgi apparatus
(c) Mitochondria
(d) Lysosomes
29. _____containing the pigment chlorophyll are called chloroplasts
Answers:
1. (c) Cell
2. (a) Cell Membrane
3. (a) Plasma Membrane
4. (b) Cell wall
5. (d) Nuclear membrane
6. (b) Osmosis
7. (d) Ribosomes
8. (d) Cell wall and vacuoles
9. (c) Diffusion
10. (a) Lysosomes
11. (a) ATP (Adenosine Triphosphate)
12. (c) Ribosomes
13. (d) Plastids
14.(d) Mitochondria
15. (a) Protoplasm
16.(c) DNA and protein
17. (c) (iii) and (iv)
18.(b) Shrinkage of cytoplasm in hypertonic medium
19.(b) Vacuole
20.(c) Smooth endoplasmic reticulum
21.(a) Rough endoplasmic reticulum
22.(d) Nucleoid
23.(d) Golgi apparatus
24.(d) Locomotion
25.(b) Endocytosis
26.(a) Bacteria
27. (c) Mitochondria
28.(a) Endoplasmic reticulum
29.(d) Chromoplasts
30.(d) Mitosis