GENERAL SCIENCE BIOLOGY ONE LINERS FOR TNPSC UPSC SSC SET 149
1481). Assertion (A) :
The Oxygen carrier protein haemoglobin is an important pigment molecule
that gives whole blood its red colour.
Reason (R) : Mature RBCs have no nucleus.
A). Both (A) and (R) are true and (R) is the correct explanation of (A)
B). Both (A) and (R) are true and (R) is not the correct explanation of (A)
C). (A) is true but (R) is false
D). (A) is false but (R) is true
Answer: Both (A) and (R) are true and (R) is not the correct explanation of (A)
1482). Which of the following statements are true?
a) The respiratory organ of insects is trachea.
Reason (R) : Mature RBCs have no nucleus.
A). Both (A) and (R) are true and (R) is the correct explanation of (A)
B). Both (A) and (R) are true and (R) is not the correct explanation of (A)
C). (A) is true but (R) is false
D). (A) is false but (R) is true
Answer: Both (A) and (R) are true and (R) is not the correct explanation of (A)
1482). Which of the following statements are true?
a) The respiratory organ of insects is trachea.
b) Gaseous exchange takes place through the spiracles of insects.
A). (a) alone
B). (b) alone
C). Both (a) and (b)
D). Both are false
Answer: Both (a) and (b)
1483). Pick out the wrong statement about (PTH) Para Thyroid Hormones
A). Secretion of PTH is regulated by Circulating levels of Ca ions
B). PTH decreases Ca^2+ levels in the blood
C). PTH stimulates the process of bone resorption
D). PTH increases Ca^2+ absorption from digested food
Answer: PTH decreases Ca^2+ levels in the blood
1484). Excretion of glucose is found in which of the following condition?
A). Diabetes mellitus
B). Diabetes insipidus
C). Diuresis
D). Both (A) and (B)
Answer: Diabetes mellitus
1485). The arteries are thicker when compared to the veins due to the presence of which of the following?
i) Endothelium
ii) Tunica intina
iii) Tunica media and tunica adventia
iv) Tunica media
A). Both (ii) and (iv) are Correct
B). Only (iv) is correct
C). Only (ii) is correct
D). Both (i) and (iv) are correct
Answer: Only (iv) is correct
1486). Who propounded the first population theory?
A). Marx
B). Malthus
C). Alfred Marshall
D). Adam Smith
Answer: Malthus
1487). Consider the following statements for HIV.
1) It is a retro virus .
2) It does not affect T-lymphocytes
3) It can affect immune system and may lead to AIDS.
4) However it cannot exist in dormant state in T cells as a provirus.
The correct statements are :
A). 2 and 3 only
B). 1 and 3 only
C). 1, 3 and 4 only
D). 2, 3 and 4 only
Answer: 1 and 3 only
1488). The chromosomal variation 21-trisomy causes
A). Patau's syndrome
B). Klinefelter syndrome
C). Cat-cry syndrome
D). Down's syndrome
Answer: Down's syndrome
1489). Match the following respiratory pigments animals with their colours :
Pigment Colour
a) Haemoglobin 1) Green
b) Haemocyanin 2) Red
c) Chlorocruorin 3) Brown
d) Pinnoglobin 4) Blue
Below codes are given in A B C D order
A). 1 2 3 4
B). 2 3 4 1
C). 4 3 2 1
D). 2 4 1 3
Answer: 2 4 1 3
1490). Which of the following four components at blood are necessary for clotting events.
I. Calcium, Vitamin K, Albumin. Globulin.
II. Calcium, Heparin, Prothrombln, Fibrinogen.
III. Calcium, Prothrombin, Fibrinogen. Platelets.
IV. Calcium, Prothrombin, Platelets, Vitamin A.
A). I and IV are correct
B). I and II are correct
C). Only III is correct
D). Only II is correct
Answer: Only III is correct
A). (a) alone
B). (b) alone
C). Both (a) and (b)
D). Both are false
Answer: Both (a) and (b)
1483). Pick out the wrong statement about (PTH) Para Thyroid Hormones
A). Secretion of PTH is regulated by Circulating levels of Ca ions
B). PTH decreases Ca^2+ levels in the blood
C). PTH stimulates the process of bone resorption
D). PTH increases Ca^2+ absorption from digested food
Answer: PTH decreases Ca^2+ levels in the blood
1484). Excretion of glucose is found in which of the following condition?
A). Diabetes mellitus
B). Diabetes insipidus
C). Diuresis
D). Both (A) and (B)
Answer: Diabetes mellitus
1485). The arteries are thicker when compared to the veins due to the presence of which of the following?
i) Endothelium
ii) Tunica intina
iii) Tunica media and tunica adventia
iv) Tunica media
A). Both (ii) and (iv) are Correct
B). Only (iv) is correct
C). Only (ii) is correct
D). Both (i) and (iv) are correct
Answer: Only (iv) is correct
1486). Who propounded the first population theory?
A). Marx
B). Malthus
C). Alfred Marshall
D). Adam Smith
Answer: Malthus
1487). Consider the following statements for HIV.
1) It is a retro virus .
2) It does not affect T-lymphocytes
3) It can affect immune system and may lead to AIDS.
4) However it cannot exist in dormant state in T cells as a provirus.
The correct statements are :
A). 2 and 3 only
B). 1 and 3 only
C). 1, 3 and 4 only
D). 2, 3 and 4 only
Answer: 1 and 3 only
1488). The chromosomal variation 21-trisomy causes
A). Patau's syndrome
B). Klinefelter syndrome
C). Cat-cry syndrome
D). Down's syndrome
Answer: Down's syndrome
1489). Match the following respiratory pigments animals with their colours :
Pigment Colour
a) Haemoglobin 1) Green
b) Haemocyanin 2) Red
c) Chlorocruorin 3) Brown
d) Pinnoglobin 4) Blue
Below codes are given in A B C D order
A). 1 2 3 4
B). 2 3 4 1
C). 4 3 2 1
D). 2 4 1 3
Answer: 2 4 1 3
1490). Which of the following four components at blood are necessary for clotting events.
I. Calcium, Vitamin K, Albumin. Globulin.
II. Calcium, Heparin, Prothrombln, Fibrinogen.
III. Calcium, Prothrombin, Fibrinogen. Platelets.
IV. Calcium, Prothrombin, Platelets, Vitamin A.
A). I and IV are correct
B). I and II are correct
C). Only III is correct
D). Only II is correct
Answer: Only III is correct
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