The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because:
Options
(a) high energy bonds are formed in mitochondrial proteins. (b) ADP is pumped out of the matrix into […]
Consider the statements given below regarding contraception and answer as directed thereafter : (i) Mendical Termination of Preganacy (MTP) during first trimester is generally safe. (ii) Generally chances of cenception are nil until mother breast-feeds […]
Given below are four methods (A-D) and their modes of action (a-d) in achieving contraception. Select their correct matching from the four options that follow : A. The pill (a) Prevents sperms reaching cervix B. […]
What is true about the isolated small tribal populations?
Options
(a) There is a decline in population as boys marry girls only from their own tribe (b) Hereditary diseases like colour blindness do […]
Which one of the following is the correct difference between Rod Cells and Cone Cells of our retina?
Options
(a) Visual acuity: High Low (b) Visual pigment: Iodopsin Rhodpsin (c) Overall function: Vision […]
Cornea transplant in humans is almost never rejected. This is because
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(a) Its cells are least penetrable by bacteria (b) it has no blood supply (c) it is composed of enucleated cells (d) […]
During the propagation of a nerve impulse, the action potential results from the movement of?
Options
(a) K⁺ ions from extracellular fluid to intracellular fluid (b) Na⁺ ions from intracellular fluid to extracellular fluid […]
In the DNA molecule
Options
(a) the total amount of purine nucleotides and pyrimidine nucleotides is not always equal (b) there are two strands which run parallel in the 5′ → 3′ direction […]
Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid?
Options
(a) GUU, GCU – Alanine (b) UAG, UGA – Stop […]
Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly mathced with the category mentioned against it?
Options
(a) Thymine, Uracil – Pyrimidines (b) Uracil, Cytosine – Pyrimidines (c) […]
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