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Biology - Section 1 (2)

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Biology - Section 1

9. 

One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor's statement?

A. Having waited a day, it is too late to take an antibiotic
B. You need an antiseptic, not an antibiotic
C. You need to be vaccinated instead of taking an antibiotic
D. You are infected by a virus

Answer: Option D

Explanation:

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10. 

Nymph is the name of young one of

A. butterfly
B. beetle
C. housefly
D. cockroach

Answer: Option D

Explanation:

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11. 

Oxygen in our blood is transported by a protein named

A. haemoglobin
B. keratin
C. collagen
D. myoglobin

Answer: Option A

Explanation:

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12. 

Pulses are a good source of

A. carbohydrates
B. fats
C. proteins
D. vitamins

Answer: Option C

Explanation:

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13. 

One of the following is most suitable for study of mutations

A. Haploids
B. Diploids
C. Tetraploids
D. Polyploid

Answer: Option A

Explanation:

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14. 

Plants are killed in winter by frost

A. because of desiccation and mechanical damage to the tissues
B. because no photosynthesis takes place at such low temperature
C. because respiration ceases at such low temperature
D. because there is no transpiration

Answer: Option A

Explanation:

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15. 

Number of chromosomes in Down's syndrome is

A. 46
B. 47
C. 48
D. 49

Answer: Option B

Explanation:

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16. 

Rain water helps to increase the ____ to some extent.

A. phosphorous contents
B. nitrogen contents
C. calcium contents
D. potash contents

Answer: Option C

Explanation:

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