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)
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