We have compiled the NCERT MCQ Questions for Class 12 Biology Chapter 8 Human Health and Disease with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 12 Biology with Answers on a daily basis and score well in exams. Refer to the Human Health and Disease Class 12 MCQs Questions with Answers here along with a detailed explanation.
Human Health and Disease Class 12 MCQs Questions with Answers
Multiple Choice Type Questions
Antigen binding site in an antibody is found between
(a) two light chain
(b) two heavy chains
(c) one heavy chain and one light chain
(d) either between two light chains or between one heavy and one light chain depending upon the nature of antigen.
Answer: (c) one heavy chain and one light chain
Short-lived immunity acquired from mother to foef’s across placenta or through mother’s milk to the infant is categorised as
(a) Active immunity
(b) Passive immunity
(c) Cellular immunity
(d) Innate non-specific immunity
Answer: (b) Passive immunity
HIV mainly infects
(a) Cytotoxic T-lymphocytes
(b) Helper lymphocytes
(c) Cell-mediated T-lymphocytes
(d) Killer lymphocytes
Answer: (b) Helper lymphocytes
A person is injected with gamma-globulin against hepatitis. This is
(a) Artificially acquired active immunity
(b) Artificially acquired passive immunity
(c) Naturally acquired active immunity
(d) Naturally acquired passive immunity
Answer: (b) Artificially acquired passive immunity
T-lymphocytes first mature in
Answer: (a) Thymus
The major phagocytic cells are
(b) Mast cells
(d) Plasma cells
Answer: (c) Macrophages
On stimulation by a foreign antigen in the body, the T-lymphocytes produce by division a clone of T-cells called
(c) Plasma cells
(d) None of these
Answer: (b) Lymphoblasts
(d) None of these
Answer: (c) Antibodies
A young drug addict used to show symptoms of depressed brain activity, feeling of calmness, relaxation and drowsiness. Possibly he was taking
Answer: (d) Valium
Aspirin is a/an
(d) None of these
Answer: (b) Antipyretic
Which one of the following is a matching pair of a drug and its category?
(b) Lysergic acid Dimethylamide-Narcotic
(d) Benzodiazepan-pain killer
Answer: (a) Amphetamines-Stimulant
Which one of the following depresses brain activity and produces feelings of calmness, relaxation and drowsiness?
Answer: (b) valium
Caffeine is a stimulant present in
(c) Cold drinks
(d) All of these
Answer: (d) All of these
Entamoeba histolytica differs from Amoeba in absence of
(b) contractile vacuole
Answer: (b) contractile vacuole
An insect bite may result in inflammation of that spot. This is triggered by the alarm chemical such as
(a) histamine and dopamine
(b) histamine and kinins
(c) interferons and opsonin
(d) interferons and histones
Answer: (b) histamine and kinins
AIDS is caused by HIV that principally infects
(a) all lymphocytes
(b) activator B-cells
(c) cytotoxic T-cells
(d) Tu lymphocytes
Answer: (d) Tu lymphocytes
Cancer cells are more easily damaged by radiations than normal cells because they are
(a) undergoing rapid division
(b) different in structure
(d) starved of mutation
Answer: (a) undergoing rapid division
Electron beam therapy is a kind of radiation therapy to treat
(a) enlarged prostrate gland
(b) gall bladder stones by breaking them
(c) certain types of cancer
(d) kidney stones
Answer: (c) certain types of cancer
Which of the following is sexually transmitted disease
Answer: (d) Hepatitis-B
CO is used for the treatment of
Answer: (a) cancer
Fill in the Blanks
Plasma cells are descendants of ……………….
All ………………. are proteins but antigens are not.
Perforin is secreted by ………………. T-cells.
A drug that relieves pain is called ……………….
………………. is derived from the unripe capsules of white poppy.
The first antibody discovered was ……………….
……………… is a source of sex hormones.
Insect vector of filariasis is and that of yellow fever, dangue is ……………….
Answer: Culex, Aedes
The breakdown of the body is self-recognition system is called ……………….
Answer: Auto immunity
The entry and development or multiplication of viruses and organisms in the body of larger organisms is called ……………….
Write True or False
CMIS releases antibodies.
Frequent vaginal douches are harmful.
Saliva contains ptylim to kill the bacteria.
The cells that actually release antibodies are plasma cells.
Disease germs cannot pass through the placenta.
LSD is hallucinogen.
Adulhood proceeds adolescence.
Carcinoma is cancer of stomach, lungs and liver.
B.C.G. vaccine is used against leprosy.
Lock jaw is also called Kala azar.
One Word Questions
Name the process of making a person immune to a disease.
Is the skin surface acidic or alkaline?
Can the skin be grown in a culture?
Mention the source of perforin.
Answer: Killer T-cells
Name the bacteria that normally inhabit vagina.
Give an alternative term for wandering macrophages.
Which protein occurs in the stratum corveum of epidermis?
Answer: Keratin (horn)
Which hallucinogen is extracted from a cactus?
Name any stimulant.
Which hallucinogen is derived from a fungus?
Which disease is caused by dog bite?
Name two types of toxins.
Answer: Exotoxins and endotoxins
Match the Following
|Column I||Column II|
|1. Lack of B-cells||A. Allergic reaction|
|2. lysozyme||B. Natural drug|
|3. Anaphylactic shock||C. Erogot fungus|
|4. Quinine||D. Cancer|
|5. LSD||E. Immuno deficiency|
|6. Leukemia||F. Tears|
|Column I||Column II|
|1. Lack of B-cells||E. Immuno deficiency|
|2. lysozyme||F. Tears|
|3. Anaphylactic shock||A. Allergic reaction|
|4. Quinine||B. Natural drug|
|5. LSD||C. Erogot fungus|
|6. Leukemia||D. Cancer|
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