Question

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Answer 1

Hi mate

1.(D) Rabies

Reason:

AIDS,syphilis and gonorrhoea are transmitted by sexual contact while rabies spreads by bite of infected animals.

2.(B) Placenta

Reason:

Placenta is the organ that establishes physical contact between the fetus (unborn young one) and the mother. Pathogens of some diseases can reach from mother to fetus along with blood and nutrients through placenta.

3.(D) Vitamin D - Osteomalacia

Reason:

Osteomalacia is a bone disease that occur due to deficiency of vitamin D in adult.

4.(A) Vaccines are preparation of antigenic proteins which generate permanent passive immunity against all Pathogens

Reason:

A vaccine provides temporary or permanent active immunity against the specific pathogen for which it contains antigenic proteins. A vaccine cannot make us permanently immune for all disease.

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Hope it helps you..

Answer 2

Hlo mate

1. D

2. B

3. D

4. A

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