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Class 11 Biology
Cell: The Unit Of Life
Quiz 1
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The cytoplasmic connections from cell to cell are known as
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middle lamella
0%
plasmodesmata
0%
cell membrane system
0%
endoplasmic reticulum
Explanation
plasmodesmata
Fimbriae – D. filamentous protein structure
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1-D, 2-A, 3-B, 4-C
0%
1-D, 2-C, 3-B, 4-A
0%
1-B, 2-D, 3-A, 4-C
0%
1-D, 2-A, 3-C, 4-B
Explanation
1-D, 2-A, 3-B, 4-C
Which one of the following also acts as a catalyst in a bacterial cell?
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23 sr RNA
0%
5 sr RNA
0%
sn RNA
0%
hn RNA
Explanation
23 sr RNA
Centrosome is found in-
0%
Cytoplasm
0%
Nucleus
0%
Chromosomes
0%
Nucleolus
Explanation
Cytoplasm
Plasma membrane is
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impermeable
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semi-permeable
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completely permeable
0%
differentially permeable
Explanation
semi-permeable
Middle lamella is made up of ___________.
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calcium sulphide
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calcium pectate
0%
calcium carbonate
0%
calcium chloride
Explanation
calcium pectate
Match the columns.
Cytoskeleton – A. hair-like outgrowth
Flagella – B. proximal region of centriole
Hub – C. bristle-like structures
Fimbriae – D. filamentous protein structure
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1-D, 2-A, 3-B, 4-C
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1-D, 2-C, 3-B, 4-A
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1-B, 2-D, 3-A, 4-C
0%
1-D, 2-A, 3-C, 4-B
Explanation
1-D, 2-A, 3-B, 4-C
Explanation:
A filamentous protein structure present in the cytoplasm is called cytoskeleton.
Flagella is a hair-like outgrowths of the cell membrane.
The central part of the proximal region of the centriole is called hub.
Fimbriae are small bristle like fibres sprouting out of the cell.
Which of the following does not have cell wall?
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Mycoplasma
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Bacteria
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PPLO
0%
Blue green algae
Explanation
Mycoplasma
The longest cell in human body is
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red blood cells
0%
white blood cells
0%
columnar epithelial cells
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nerve cells
Explanation
nerve cells
The main site for synthesis of lipids is
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vacuoles
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RER
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SER
0%
Golgi body
Explanation
SER
The function of ribosomes is
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metabolism
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lipid synthesis
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protein synthesis
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photosynthesis
Explanation
protein synthesis
Which is called Suicidal Bag?
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Centrosome
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Lysosome
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Mesosome
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Chromosome
Explanation
Lysosome
A nucleosome is a portion of the chromonema containing ______.
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both DNA and histones
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only histones
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both DNA and RNA
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only DNA
Explanation
both DNA and histones
The largest cell in the human body is-
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Nerve cell
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Muscle cell
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Liver cell
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Kidney cell
Explanation
Nerve cell
Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?
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Neither lipids, nor proteins can flip-flop
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Both lipids and proteins can flip-flop
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While lipids can rarely flip-flop, proteins can not
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While proteins can flip-flop, lipids can not
Explanation
While lipids can rarely flip-flop, proteins can not
Cell secretion is done by-
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Plastids
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ER
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Golgi apparatus
0%
Nucleolus
Explanation
Golgi apparatus
___________ increases the surface area for mitochondrial activity.
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Inner membrane
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Inter membrane space
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Matrix
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Cristae
Explanation
Cristae
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