The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a derivative of:
Options
(a) vitamin B₁ (b) vitamin C (c) vitamin D (d) vitamin A
The most common substrate used in distilleries for the production of ethanol is
Options
(a) corn meal (b) soya meal (c) ground gram (d) molasses
Correct Answer:
molasses
Explanation:
No explanation available. Be […]
Which one of the following techniques made it possible to genetically engineer living organism ?
Options
(a) Recombinant DNA techniques (b) X-ray diffraction (c) Heavier isotope labelling (d) Hybridization
Correct Answer:
Recombinant DNA […]
Which one of the following help in absorption of phosphorus from soil by plants?
Options
(a) Glomus (b) Rhizobium (c) Frankia (d) Anabaena
Correct Answer:
Glomus
Explanation:
No explanation available. Be the first to […]
Which one of the following enzymes carries out the initial step in the digestion of milk in humans?
Options
(a) Pepsin (b) Rennin (c) Lipase (d) Trypsin
Correct Answer:
Rennin
Explanation:
Rennin is an […]
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells ?
Options
(a) 42 (b) 63 (c) 84 (d) 21
Correct […]
The breakdown of detritus into smaller particles by earthworm is a process called
Options
(a) humification (b) fragmentation (c) mineralisation (d) catabolism
Correct Answer:
fragmentation
Explanation:
The break down of detritus into smaller […]
Which one of the following plasma proteins is involved in the coagulation of blood?
Options
(a) an albumin (b) serum amylase (c) a globulin (d) fibrinogen
Correct Answer:
fibrinogen
Explanation:
Fibrinogen, the protein of […]
Himgiri developed by hybridisation and selection for disease resistance against rust pathogens is a variety of
Options
(a) chilli (b) maize (c) sugarcane (d) wheat
Correct Answer:
wheat
Explanation:
No explanation available. Be the […]
If for some reason, the vasa efferentia in the human reproductive system gets blocked, the gametes will not be transorted form
Options
(a) testes to epididymis (b) epididymis to vas deferns (c) ovary […]
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