Cell membrane is made up of
Options
(a) protein (b) cellulose (c) lipids (d) lipids,carbohydrates and protein
Correct Answer:
lipids,carbohydrates and protein
Explanation:
No explanation available. Be the first to write the explanation […]
Membrane of vacuole is called
Options
(a) tonoplast (b) plasma membrane (c) cell sap (d) cell wall
Correct Answer:
tonoplast
Explanation:
No explanation available. Be the first to write the explanation for this […]
Diameter of DNA helix is
Options
(a) 10 Å (b) 20 Å (c) 30 Å (d) 40 Å
Correct Answer:
20 Å
Explanation:
No explanation available. Be the first to write the explanation […]
Giraffe has long neck, this can be attributed to
Options
(a) natural selection (b) inheritance of acquired character (c) isolation (d) none of these
Correct Answer:
inheritance of acquired character
Explanation:
No explanation […]
A abnormal gene is replaced by normal gene. It is called
Options
(a) Gene therapy (b) Cloning (c) Mutation (d) Plastic surgery
Correct Answer:
Gene therapy
Explanation:
No explanation available. Be the first […]
Fertilization occurs in
Options
(a) oviduct (b) uterus (c) urethra (d) ovary
Correct Answer:
oviduct
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
The frequency of light ray having the wavelength 3000Å is
Options
(a) 9×10¹³ cycle/sec (b) 10¹⁵ cycle/sec (c) 90 cycle/sec (d) 3000 cycle/sec
Correct Answer:
10¹⁵ cycle/sec
Explanation:
n = v / λ = […]
Opening and closing of stomata are under the control of
Options
(a) K⁺ (b) P (c) Mg (d) None of these
Correct Answer:
K⁺
Explanation:
No explanation available. Be the first to write […]
End product of anaerobic respiration in humans
Options
(a) lactic acid (b) ethyl alcohol (c) ethyl alcohol + CO₂ (d) lactic acid + CO₂
Correct Answer:
lactic acid + CO₂
Explanation:
Occasionally in humans, […]
A body revolved around the sun 27 times faster than the earth. What is the ratio of their radii?
Options
(a) 1 / 3 (b) 1 / 9 (c) 1 / 27 (d) […]
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