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Class 9 Science
The Fundamental Unit Of Life
Quiz 1
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Which of the following can be made into crystal?
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A bacterium
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An Amoeba
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A virus
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A sperm
Explanation
A virus
A cell will swell up if
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the concentration of water molecules in the cell is higher than the concentration of water molecules in the surrounding medium.
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the concentration of water molecules in the surrounding medium is higher than water molecules concentration in the cell.
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the concentration of water molecules is same in the cell and in the surrounding medium.
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concentration of water molecules does not matter.
Explanation
the concentration of water molecules in the surrounding medium is higher than water molecules concentration in the cell.
Chromosomes are made up of
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DNA
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Protein
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DNA and protein
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RNA
Explanation
DNA and protein
Which of these is not related to endoplasmic reticulum?
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It behaves as a transport channel for proteins between nucleus and cytoplasm.
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It transports materials between various regions in the cytoplasm.
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It can be the site of energy generation.
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It can be the site for some biochemical activities of the cell.
Explanation
It can be the site of energy generation.
Following are a few definitions of osmosis:
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Movement of water molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane.
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Movement of solvent molecules from its higher concentration to lower concentration.
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Movement of solvent molecules from higher concentration to lower concentration of solution through a permeable membrane.
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Movement of solute molecules from lower concentration to higher concentration of solution through a semi permeable membrane.
Explanation
Movement of water molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane.
Plasmolysis in a plant cell is defined as
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breakdown (lysis) of plasma membrane in hypotonie medium
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shrinkageof cytoplasm in hypertonic medium
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shrinkage of nucleoplasm
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none of them
Explanation
shrinkageof cytoplasm in hypertonic medium
Which of the following are covered by a single membrane?
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Mitochondria
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Vacuole
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Lysosome
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Plastid
Explanation
Vacuole
Find out the false sentence.
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Nucleus is involved with the formation of lysosomes.
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Nucleus, mitochondria and plastid have DNA, hence they are able to make their own structural proteins.
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Mitochondria is said to be the power house of the cell as ATP is generated in them.
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Cytoplasm is called as protoplasm.
Explanation
Nucleus is involved with the formation of lysosomes.
Find out the correct sentence.
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Enzymes packed in lysosomes are made through RER (rough endoplasmic reticulum).
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Rough endoplasmic reticulum and smooth endoplasmic reticulum produce lipid and protein respectively.
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Endoplasmic reticulum is rélated to the destruction of plasma membrane.
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Nucleoid is present inside the nucleoplasm of eukaryotic nucleus.
Explanation
Enzymes packed in lysosomes are made through RER (rough endoplasmic reticulum).
Which cell organelle plays a crucial role in detoxifring many poisons and drugs in a cell?
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Golgi apparatus
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Lysosomes
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Smooth endoplasmic reticulum
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Vacuoles
Explanation
Smooth endoplasmic reticulum
The proteins and lipids, essential for building the cell membrane, are manufactured by
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rough endoplasmic reticulum
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golgi apparatus
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plasma membrane
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mitochondria
Explanation
rough endoplasmic reticulum
The undefined nuclear region of prokaryotes is also known as
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nucleus
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nucleolus
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nucleic acid
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nucleoid
Explanation
nucleoid
The cell organelle involved in forming complex sugars from simple sugars are
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endoplasmic reticulum
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ribosomes
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plastids
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golgi apparatus
Explanation
golgi apparatus
Which out of the following is not a function of vacuole?
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Storage
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Providing turgidity and rigidity to the cell
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Waste excretion
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Locomotion
Explanation
Locomotion
Amoeba acquires its food through a process, termed
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exocytosis
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endocytosis
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plasmolysis
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exocytosis and endocytosis both
Explanation
endocytosis
Cell wall of which one of these is not made up of cellulose?
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Bacteria
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Hydrilla
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Mango tree
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Cactus
Explanation
Bacteria
Silver nitrate solution is used to study
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endoplasmic reticulum
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golgi apparatus
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nucleus
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mitochondria
Explanation
golgi apparatus
Organelle other than nucleus, containing DNA is
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endoplasmic reticulum
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golgi apparatus
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mitochondria
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lysosomes
Explanation
mitochondria
Kitchen of the cell is
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mitochondria
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endoplasmic reticulum
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chioroplast
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golgi apparatus
Explanation
chioroplast
Lipid molecules in the cell are synthesised by
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smooth endoplasmic reticulum
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rough endoplasmic reticulum
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golgi apparatus
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plastids
Explanation
smooth endoplasmic reticulum
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