Free Human Health And Diseases (Daily Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Human Health And Diseases (Daily Quiz: 1) Time:

Question-1

Which of the following diseases is due to an allergic reaction?

(a)

(b)

(c)

(d)


Question-2

Assertion (A) Mast cells in the humans release excessive amount of chemicals like histamine, which cause allergy.
Reason (R) Allergens in the environment on reaching human body stimulate mast cells.

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.

The exaggerated response of the immune system to certain antigens present in the environment is called allergy. The substances to which such an immune response is produced are called allergens (antigens). Allergens in the environment on reaching human body stimulate mast cells, which release excessive amount of chemicals like histamine. These chemicals cause marked dilation of all the peripheral blood vessels and the capillaries become highly permeable, so that large amounts of fluid leak out from the blood into the tissues thereby causing allergy.


Question-3

One of the following is not the causal organism for ringworm.

(a)

(b)

(c)

(d)


Question-4

B-lymphocytes are associated with

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Immune response by the B-cells by production of antibody is called antibody mediated immune response or humoral immune response. Here, antibodies are found in blood plasma. So, it is called as humoral immune response.


Question-5

Human immunodeficiency virus (HIV) has a protein coat and a genetic material which is

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

HIV is a retrovirus, which contains single stranded RNA, surrounded by protein coat (core shell) as genetic material. It causes AIDS. HIV is different in structure from other retroviruses. It is around 120 nm in diameter (around 60 times smaller than a red blood cell) and roughly spherical.


Molecular Basis Of Inheritance

Quiz 1091

Biotechnology Principles And Processes

Quiz 1092

Biotechnology And Its Applications

Quiz 1093

Organisms And Populations

Quiz 1094

Ecosystem

Quiz 1095

NEET Biology Quiz

Topic Wise Quizzes

NEET Biology MCQ

Topic Wise Exercise

Today Quiz

Anatomy Of Flowering Plants

This Week Quiz

Locomotion And Movement

This Month Quiz

Locomotion And Movement