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NEET • BIOLOGY • HUMAN HEALTH AND DISEASES
Human health and diseases practice · Medium
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Showing 1-30 of 114 questions
1
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1 of 114
Remembering
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Which of the following disease is due to an allergic reaction?
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Correct option: B
Hay fever
Option B (Hay fever) is correct because hay fever is a common allergic reaction to pollen.
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Remembering
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Plasmodium is an
View answer and explanation
Correct option: A
Endoparasite
Option A (Endoparasite) is correct because Plasmodium lives inside the host's cells and tissues.
3
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Understanding
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Consider the following statements. Health is a combination of
I. complete physical health
II. mental health
III. social health
Which of the statements given above are correct?
I. complete physical health
II. mental health
III. social health
Which of the statements given above are correct?
View answer and explanation
Correct option: D
I, II and III
The correct answer is D (I, II and III) because health is a combination of physical, mental, and social well-being.
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Understanding
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Life style does not include
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Correct option: C
Health increases longevity of people
The correct answer is D (Health increases longevity of people) because lifestyle includes food, rest, exercise, and habits, but not the outcome of health.
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Understanding
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If a person in infected with some deadly microbes to which quick immune response is required as in
tetanus, we need to inject
i) Preformed antibodies
ii) Vaccines
iii) Antitoxins
iv) Mature cells
Select the correct option from the following:
tetanus, we need to inject
i) Preformed antibodies
ii) Vaccines
iii) Antitoxins
iv) Mature cells
Select the correct option from the following:
View answer and explanation
Correct option: A
i and iii only
Option A (i and iii only) is correct because preformed antibodies and antitoxins provide immediate, passive immunity, which is crucial in cases like tetanus where a quick response is needed.
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Remembering
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Role of spleen in mammals is to
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Correct option: C
Act as haemopoietic tissue
Option C (Act as haemopoietic tissue) is correct because the spleen contains lymphoid tissue that produces lymphocytes and monocytes, contributing to blood cell formation (haemopoiesis), especially during fetal development and in certain disease states.
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Understanding
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Consider the following statements
I. Secondary lymphoid organs includes lymph nodes, spleen and small masses of lymph tissue such as Peyer’s patches, appendix and tonsils
II. The secondary lymphoid organs all the site of lymphocyte maturation and they efficiently trap antigens for exposure to T and B-cells
Which of the statements given above is/are correct?
I. Secondary lymphoid organs includes lymph nodes, spleen and small masses of lymph tissue such as Peyer’s patches, appendix and tonsils
II. The secondary lymphoid organs all the site of lymphocyte maturation and they efficiently trap antigens for exposure to T and B-cells
Which of the statements given above is/are correct?
View answer and explanation
Correct option: C
I and II
Option C is correct because ELISA (Enzyme-Linked Immunosorbent Assay) involves adding a substrate that is converted into a colored product, allowing for the detection and quantification of a specific substance.
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Analyzing
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A patient of diagnosed with internal bleeding, muscular pain, fever, anemia blockage of intestinal passage. He is most likely suffering from
View answer and explanation
Correct option: C
Ascariasis
Option C is correct because the symptoms (internal bleeding, muscular pain, fever, anemia, blockage of intestinal passage) are most indicative of Ascariasis.
9
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Understanding
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Which one the following statements is false?
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Correct option: D
Mescaline is a stimulant
Option D (Mescaline is a stimulant) is false because mescaline is a hallucinogen, not a stimulant.
10
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Remembering
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Bacterium, which is concerned with pertussis is
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Correct option: A
Bordetella pertussis
Option A (Bordetella pertussis) is correct because Bordetella pertussis is the bacterium that causes pertussis, also known as whooping cough.
11
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Understanding
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Which of the following option is not correct to a healthy person
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Correct option: C
Genetic disorder deficiencies
The correct answer is C (Genetic disorder deficiencies) because a healthy person is generally free from genetic disorder deficiencies.
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Understanding
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When people are healthy they are
a. More efficient at work
b. Decreases productivity
c. Brings economic prosperity
d. Increases longevity of people
e. Increases infant and maternal mortality
How many statements are correct about healthy people?
a. More efficient at work
b. Decreases productivity
c. Brings economic prosperity
d. Increases longevity of people
e. Increases infant and maternal mortality
How many statements are correct about healthy people?
View answer and explanation
Correct option: B
Three
The correct answer is B (Three) because statements a, c, and d are correct about healthy people. Statements b and e are incorrect.
13
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13 of 114
Understanding
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A new born baby who receives IgA form its mother’s milk develops
View answer and explanation
Correct option: C
Naturally acquired passive immunity
Option C (Naturally acquired passive immunity) is correct because the baby receives pre-formed antibodies (IgA) from the mother's milk, providing temporary protection.
14
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Remembering
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During old age, muscles and bones becomes weak due to deficiency of?
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Correct option: A
vit-D
The correct answer is A (vit-D) because Vitamin D is essential for calcium absorption, which is crucial for bone strength. Deficiency leads to weaker bones and muscles in old age.
15
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Understanding
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Two of the body parts, which do not appear in MRI may be
View answer and explanation
Correct option: B
Scapula and canines
Option B (Scapula and canines) is correct because bone and teeth (especially with fillings) cause artifacts in MRI, making them difficult to image clearly.
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16
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Understanding
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Nicotine intake stimulates the …A… to release …B… and …C… into blood circulation. This lead to increase in …D… and an increase …E… .
Here A and E refers to
Here A and E refers to
View answer and explanation
Correct option: A
A-adrenal gland, B-adrenaline, C-nor-adrenaline, D-blood pressure, E-heart rate
Option A (A-adrenal gland, B-adrenaline, C-nor-adrenaline, D-blood pressure, E-heart rate) is correct because nicotine stimulates the adrenal gland to release adrenaline and noradrenaline, leading to increased blood pressure and heart rate.
17
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Remembering
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A chemical substance produce produced by a microorganism for inhibiting the growth of another is
View answer and explanation
Correct option: B
Antibiotic
Option B (Antibiotic) is correct because an antibiotic is a chemical substance produced by a microorganism that inhibits the growth of or kills another microorganism.
18
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Remembering
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Flemming, Chain and Florey were awarded the Nobel Prize in 1945 for the discovery of
View answer and explanation
Correct option: C
Penicillin
The correct answer is C (Penicillin) because Flemming, Chain, and Florey were awarded the Nobel Prize in 1945 for their work on penicillin.
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Understanding
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World health organization has started a number of programmes to prevent spreading of HIV infection
Few such steps include
I. ensuring use of disposable needles and syringes
II. free distribution of condoms
III. advocating safe sex
IV. controlling drug abuse
Which of the steps given above are correct?
Few such steps include
I. ensuring use of disposable needles and syringes
II. free distribution of condoms
III. advocating safe sex
IV. controlling drug abuse
Which of the steps given above are correct?
View answer and explanation
Correct option: D
I, II, III and IV
Option D is correct because all listed steps (disposable needles, condoms, safe sex, and drug abuse control) are crucial for preventing the spread of HIV infection.
20
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Understanding
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PMNL are one of the main components of
View answer and explanation
Correct option: B
Cellular barrier of innate immunity
Option B (Cellular barrier of innate immunity) is correct because PMNLs (Polymorphonuclear leukocytes) are phagocytic cells that act as a cellular barrier in the innate immune system.
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Understanding
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Select the correct statement from the set given below
I. Growing number of people are taking LSD and other drugs like barbiturates and amphetamines
II. Several plants, fruits and seed having hallucinogenic properties have been used in folk-medicine
Which of the statements given above is/are correct?
I. Growing number of people are taking LSD and other drugs like barbiturates and amphetamines
II. Several plants, fruits and seed having hallucinogenic properties have been used in folk-medicine
Which of the statements given above is/are correct?
View answer and explanation
Correct option: C
I and II
Option C (I and II) is correct because both statements are true. There is an increasing trend of drug use, and hallucinogenic plants have been used in folk medicine.
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Understanding
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A person suffering from cancer is treated with radiotherapy. Which is correct for this technique of treatment?
View answer and explanation
Correct option: D
Tumour cells are irradiated lethally
Option D (Tumour cells are irradiated lethally) is correct because radiotherapy aims to kill cancer cells by damaging their DNA with radiation.
23
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Understanding
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Which one is correctly matched?
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Correct option: C
AIDS virus – reverse transcriptase
Option C (AIDS virus – reverse transcriptase) is correctly matched because the AIDS virus (HIV) uses reverse transcriptase to convert RNA to DNA.
24
Medium
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Understanding
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Measures for personal hygiene include
I. Intake of clean drinking water
II. Keeping the body clean
III. Disinfection of water resources
Which of the statements given above are correct?
I. Intake of clean drinking water
II. Keeping the body clean
III. Disinfection of water resources
Which of the statements given above are correct?
View answer and explanation
Correct option: C
II and III
The correct answer is A (I and II) because personal hygiene primarily includes intake of clean drinking water and keeping the body clean.
25
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Understanding
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Which one of the following is useful in identifying the different strains of a causal microbe of an infectious disease?
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Correct option: C
Complementary DNA
Option C (Complementary DNA) is correct because cDNA is used in techniques like PCR and DNA sequencing to identify different strains of microbes.
26
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26 of 114
Understanding
+4 | -1
Vaccines, when introduced into the body, stimulates the production of
View answer and explanation
Correct option: B
Antibody
Option B is correct because vaccines introduce antigens into the body, which stimulate the immune system to produce antibodies that provide immunity.
27
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Understanding
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ELISA assay
View answer and explanation
Correct option: C
Involves addition of substrate which is converted into coloured end product
Option B is correct because vaccines introduce antigens into the body, which then stimulate the immune system to produce antibodies that provide immunity against the specific disease.
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Understanding
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Proliferation of cancer cells is not limited because of
View answer and explanation
Correct option: A
Differing surface proteins
Option A (Differing surface proteins) is correct because altered surface proteins on cancer cells prevent normal cell-cell interactions and growth regulation.
29
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Remembering
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OPV (vaccine) is administered to children in India for protection against
View answer and explanation
Correct option: B
Polio
Option B (Polio) is correct because OPV stands for Oral Polio Vaccine, which is administered to protect against poliomyelitis.
30
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Analyzing
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Assertion: Dye workers generally suffer from
bladder cancer.
Reason: These are more exposed to a
carcinogenic chemical benzopyrene.
bladder cancer.
Reason: These are more exposed to a
carcinogenic chemical benzopyrene.
View answer and explanation
Correct option: C
If Assertion is true but Reason is false
Option C (If Assertion is true but Reason is false) is correct because dye workers do have a higher risk of bladder cancer, but the carcinogenic chemical they are exposed to is typically aromatic amines, not benzopyrene.
Revision notes and key takeaways
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Key Takeaways
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