Free Human Health And Diseases (Daily Quiz: 4) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Human Health And Diseases (Daily Quiz: 4) Time:

Question-1

The most abundant antiody produced against allergens

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

The substances to which an exaggerated response of the immune system occurs are called allergens. The antibodies produced to these are of lgE type.


Question-2

Which type of barriers do saliva in the mouth, tears form eyes and acid in the stomach belong?

(a)

(b)

(c)

(d)


Question-3

Immunoglobulins are

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

Immunoglobulins (Ig), also known as antibodies, is a large Y-shape protein. It is produced by plasma cells and used by the immune system to identify and neutralize foreign objects such as bacteria and viruses. The antibody recognizes a unique part of the foreign target, called an antigen.


Question-4

Which is the particular type of drug that is obtained from the plant whose one flowering branch is shown below?

human-health-and-diseases-class-xii-Chapter-8-neet-mcq-10-213-148

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

The plant shown in the given picture is Datura, which produces natural hallucinogens. These drugs induce behavioural abnormalities by changing thoughts, feelings and perceptions without any actual sensory stimulus.


Question-5

Which one of the following pairs is not correctly matched?

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Syphilis is caused by a spirochete (spiral bacterium) Treponema pallidum. Sleeping sickness is a disease of tropical Africa caused by the presence in the blood of the parasitic protozoan, Trypanosoma gambiense. Plague is an epidemic disease of rats which is transmitted to humans by rat fleas. Dengue is a disease transmitted to humans by mosquito, Aedes aegypti.


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