NSO Level 1- Science Olympiad (SOF) Class 12: Questions 1 - 4 of 106
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🎯 106 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)
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Question 1
Question MCQ▾
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 2
Question MCQ▾
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 3
Question MCQ▾
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 4
Question MCQ▾
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 |