NSO Level 1- Science Olympiad (SOF) Class 12: Questions 1 - 4 of 60

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Question number: 1

» Biology » Biology in Human Welfare

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Question

There are living but weekend pathogens present in live attenuated vaccines. From the statements given below which is correct for such vaccines?

Choices

Choice (4) Response

a.

Recombinant DNA technology is used to prepare them.

b.

For complete immune response there is a requirement to administer booster dose.

c.

Only antibody production is triggered by them.

d.

Humoral and cell-mediated immune response is stimulated by them

Question number: 2

» Biology » Biology in Human Welfare

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The Human immunodeficiency virus which is responsible for causing AIDS principally infects which of the following?

Choices

Choice (4) Response

a.

B cells

b.

Cytotoxic T cells

c.

CD4 lymphocytes

d.

Lymphocytes

Question number: 3

» Biology » Biology in Human Welfare

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Which of the following parasite causes one of the deadliest disease called African sleeping sickness in human beings?

Choices

Choice (4) Response

a.

Trypsaanosoma lewsii transmitted by Fruitfly

b.

Plasmodium vivax transmitted by Tsetse fly

c.

Entamoeba gingivalis spread by Housefly

d.

Trypanosoma gambiense transmitted by Glossina palpalis

Question number: 4

» Biology » Biology in Human Welfare

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It is important for parents to know their Rh factors because the situation can be serious in case of biological incompatibility because of which one of the following reason?

Choices

Choice (4) Response

a.

Rh- husband and Rh+ wife

b.

Rh+ husband and Rh- wife

c.

Rh+ husband and Rh+ wife

d.

Rh- husband and Rh- wife

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