The Cell Structure and functions Mcqs
This Set of Multiple choice questions and answers focuses on study of The Cell Structure and functions. These questions are chosen from a collection of most authoritative and best reference books on Biology. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Medicine industry job interviews. One should practice our Mcqs to assimilate knowledge on The Cell Structure and functions comprehensively.
2. Who opposed the idea the cell is an empty space bounded by thick wall?
Lorenz Oken
Schwann
Robert Brown
Rudolph Virchow
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3. Who first observed and thus hypothesized that new cells are formed from previously existing living cell?
Theodor Schwann and Schleiden
Rudolph Virchows
Louis Pasteur
Both b and c
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4. Resolution power of a compound microscope is
2.0 ?m
2-4 A
24 ?m
24 A
5. Magnifying power of electron microscope as compared to eye is
500 X
250000X
500000X
250X
6. In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon:
Their physical properties like size & weight.
Physical properties of the medium like its density.
Their electrical properties like their charges
Both a and b
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7. Percentage of proteins in cell membrane is
20-40%
40-50%
60-80%
80-100%
8. Which of the statement about cell membrane is not true?
It contains protein molecules embedded in lipid bilayer
It is a differentially permeable membrane.
It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles.
It may get infolded to engulf solid or liquid material.
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9. Movement of the material across the cell membrane which does not requiring expenditure of metabolic energy is called
Active transport
Passive transport
Co-transport
Counter transport
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10. The first layer of cell wall which is formed is:
Primary wall
Secondary wall
Middle lamella
All of these
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11. Cellulose is the major component of
Primary wall
Secondary wall
Middle lamella
All of the above
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12. Strengthening material of prokaryotic cell wall is
Cellulose
Chitin
Inorganic salts silica waxes and ligin
Peptidoglycan or Murein.
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13. Spherical or tubular membranes which separate the material present in endoplasmic reticulum from that of cytoplasmic material are called
Cytosol
Cisternae
Polysomes
Cristae
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14. Whone is not the function of endoplasmic reticulum?
Nerve impulse conduction
Transport of material
Mechanical support
Synthesis of conjugated molecules
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15. Factory of ribosomal systhesis is
Cytoplasm
Nucleus
Nucleolus
Endoplasmic reticulum
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