General Science #29 Multiple Choice Questions

GENERAL SCIENCE #29

MULTIPLE CHOICE QUESTIONS

1. Which of the following can be made into crystal?

(a) A bacterium

(b) An amoeba

(c) A virus

(d) A sperm

Answer: (c)

2. A cell will swell up if ……………

(a) the concentration of water molecules in the cell is higher than the concentration of water molecules in the surrounding medium

(b) the concentration of water molecules in the surrounding medium is higher than water molecules concentration in the cell

(c) the concentration of water molecules is same in the cell and in the surrounding medium

(d) concentration of water molecules does not matter

Answer: (b)

3. Chromosomes are made up of which of the following?

(a) DNA

(b) Protein

(c) DNA and protein

(d) RNA

Answer: (c)

4. Which of these is not related to endoplasmic reticulum?

(a) It behaves as a transport channel for proteins between nucleus and cytoplasm

(b) It transports materials between various regions in the cytoplasm

(c) It can be the site of energy generation

(d) It can be the site for some biochemical activities of the cell

Answer: (c)

5. Which of the following is the correct definition of osmosis?

(a) Movement of water molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane

(b) Movement of solvent molecules from its higher concentration to lower concentration

(c) Movement of solvent molecules from higher concentration to lower concentration of solution through a permeable membrane

(d) Movement of solute molecules from lower concentration to higher concentration of solution through a semi permeable membrane

Answer: (a)

6. Plasmolysis in a plant cell is defined as which of the following?

(a) Breakdown (lysis) of plasma membrane in hypotonie medium

(b) Shrinkage of cytoplasm in hypertonic medium

(c) Shrinkage of nucleoplasm

(d) None of the above

Answer: (b)

7. Which of the following are covered by a single membrane?

(a) Mitochondria

(b) Vacuole

(c) Lysosome

(d) Plastid

Answer: (b)

8. Which of the following sentence is not correct?

(a) Nucleus is involved with the formation of lysosomes

(b) Nucleus, mitochondria and plastid have DNA, hence they are able to make their own structural proteins

(c) Mitochondria is said to be the power house of the cell as ATP is generated in them

(d) Cytoplasm is called as protoplasm

Answer: (a)

9. Which of the following sentence is correct?

(a) Enzymes packed in lysosomes are made through RER (rough endoplasmic reticulum)

(b) Rough endoplasmic reticulum and smooth endoplasmic reticulum produce lipid and protein respectively

(c) Endoplasmic reticulum is related to the destruction of plasma membrane

(d) Nucleoid is present inside the nucleoplasm of eukaryotic nucleus

Answer: (a)

10. 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

Answer: (c)

11. The proteins and lipids, essential for building the cell membrane, are manufactured by which of the following?

(a) Rough endoplasmic reticulum

(b) Golgi apparatus

(c) Plasma membrane

(d) Mitochondria

Answer: (a)

12. The undefined nuclear region of prokaryotes is also known as which of the following?

(a) Nucleus

(b) Nucleolus

(c) Nucleic acid

(d) Nucleoid

Answer: (d)

13. The cell organelle involved in forming complex sugars from simple sugars are which of the following?

(a) Endoplasmic reticulum

(b) Ribosomes

(c) Plastids

(d) Golgi apparatus

Answer: (d)

14. Which of the following is not a function of vacuole?

(a) Storage

(b) Providing turgidity and rigidity to the cell

(c) Waste excretion

(d) Locomotion

Answer: (d)

15. Amoeba acquires its food through which of the following process?

(a) Exocytosis

(b) Endocytosis

(c) Plasmolysis

(d) Both ‘a’ and ‘b’

Answer: (b)

16. Cell wall of which one of these is not made up of cellulose?

(a) Bacteria

(b) Hydrilla

(c) Mango tree

(d) Cactus

Answer: (a)

17. Silver nitrate solution is used to study which of the following?

(a) Endoplasmic reticulum

(b) Golgi apparatus

(c) Nucleus

(d) Mitochondria

Answer: (b)

18. Lipid molecules in the cell are synthesised by which of the following?

(a) Smooth endoplasmic reticulum

(b) Rough endoplasmic reticulum

(c) Golgi apparatus

(d) Plastids

Answer: (a)

19. Which is the only cell organelle seen in prokaryotic cell?

(a) Mitochondria

(b) Ribosomes

(c) Plastids

(d) Lysosomes

Answer: (b)

20. Lysosome arises from which of the following?

(a) Endoplasmic reticulum

(b) Golgi apparatus

(c) Nucleus

(d) Mitochondria

Answer: (b)