Cell The Unit Of Life

Biology
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Which of the following is an incorrect pair?

A
Nucleus- Brain of the cell
B
Mitochondria- Powerhouse of the cell
C
Chloroplast- Kitchen of the cell
D
Lysosome- Secretory granules
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Which of the following is not a function of ribosome?

A
It helps in the manufacture of protein molecules
B
It helps in manufacture of enzymes
C
It helps in manufacture of starch molecules
D
None of these
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The lysosomes are known as 'suicide-bags' of a cell because

A
When a cell gets damaged during the disturbance in cellular metabolism, lysosomes may burst and the digestive enzymes, thus, released digest their own cell.
B
When a cell gets formed, lysosomes may burst and the digestive enzymes, thus, released digest their own cell.
C
Lysosome helps in food digestion.
D
None of the above.
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Which type of plastids is commonly found in the roots of the plant?

A
Leucoplast
B
Chloroplast
C
Aleuroplast
D
Chromoplast
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Barophilic prokaryotes

A
Grow slowly in highly alkaline frozen lakes at high altitudes
B
Occur in water containing high concentration of barium hydroxide
C
Grow and multiply in very deep marine sediments
D
Readily grow and divide in sea water enriched in any soluble salt of barium
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The cell membranes of adjacent cells are fused at which of the following cell junction?

A
Macula adherens
B
Zonula adherens
C
Zonula occludens
D
Nexus
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Lysozyme that is present in perspiration, saliva and tears, destroys:

A
Most virus infected cells
B
Certain fungi
C
Certain types of bacteria
D
All viruses
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Lipid molecules in the cells are synthesized by

A
Smooth endoplasmic reticulum
B
Rough endoplasmic reticulum
C
Golgi apparatus
D
Plastids
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Which of the following characters distinguishes plant cells from animal cells?

A
Cell wall
B
Vacuole
C
Plastids
D
All of the above
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