🏫 Board🧬 Biology

Human Health and Disease

12 Board Biology previous year questions on Human Health and Disease — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.

Q1 FREE PREVIEW

Morphine is obtained from

a

Poppy plant

b

Cannabis plant

c

Atropa belladonna

d

Dhatura

✓ Correct answer: a)

Poppy plant

Explanation

Morphine is obtained from the latex of the poppy plant (Papaver somniferum). It is a powerful pain-relieving alkaloid.

  • Cannabis plant :-Cannabis produces cannabinoids such as marijuana and hashish
  • Atropa belladonna:- This plant contains alkaloids such as atropine

  • Dhatura :-Dhatura contains alkaloids such as atropine and scopolamine

Q2

The substances to which an immune response is produced, are called

a

Allergens

b

Antibodies

c

Vaccines

d

Antigens

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Q3

Which of the following parasites is the causative organism of malaria?

a

Ascaris

b

Plasmodium

c

Salmonella

d

Rhino virus

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Q4

The infective stage of malarial parasite in the salivary gland of mosquito is

a

Streptozoites

b

Sporozoites

c

Mesozoites

d

All of these

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Q5

Chemical released due to allergy is

a

Histamine

b

Serotonin

c

Both (A) and (B)

d

None of these

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Q6

Select the incorrect statement with respect to acquired immunity.

a

Acquired immunity is a non-specific type of defense present at the time of birth.

b

Primary response is produced when our body encounters a pathogen for the first time.

c

Anamnestic response is elicited on subsequent encounters with the same pathogen.

d

Anamnestic response is due to memory of first encounter.

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Q7

Virus-infected cells secrete proteins called ____ which protect non-infected cells from further viral infection.

a

exon

b

intron

c

interferon

d

neutrophils

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Q8

Widal test is done to confirm

a

Malaria

b

Typhoid

c

AIDS

d

Cancer

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Q9

Rheumatoid arthritis is which typend disease?

a

Sex-linked disease

b

Genetic disease

c

Viral disease

d

Autoimmune disease

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Q10

Contact inhibition is a property related to

a

Normal cells

b

Cancerous cells

c

Hepatic cells

d

Macrophages

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Q11

HIV attacks on which of the following cells ?

a

B-cell

b

T-cell

c

Epithelial cell

d

T-helper cell

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Q12

Which of the following is an antibody against allergy ?

a

IgG

b

IgE

c

IgA

d

IgM

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