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Main Concepts of Life Science


7. 

Consider the statements:
I. Viruses are obligatory endoparasites of living cells.
II. Viruses have genetic material.
III. Viruses can be crystallised.
IV. Viruses do not have mitochondria.
Of these statements:

Answer : D. All the above

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8. 

Which of the following is NOT correctly matched?

Answer : B. Gibberellin - Amylase synthesis

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9. 

The unicellular algae used in space craft to regulate oxygen supply is

Answer : B. Chlorella

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10. 

which one of the following statements regarding starch and cellulose is NOT correct?

Answer : D. Starch and cellulose both are made up of glucose molecules

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11. 

Diffusion means

Answer : B. the movement of molecules from a regoin of greater concentration to lesser concentration

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12. 

based on the cellular type the algae chlorella belongs to

Answer : D. Both A and B

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