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Q.99 RNA is considered as the first genetic material to have evolved on the earth. Which one of the following properties of RNA is critical for its functioning as the genetic […]

Q.98 In which one of the following organisms, it is easiest to distinguish mutations on adjacent base pairs of DNA through genetic recombination experiments? (A) Bacteriophages (B) Yeast (C) Escherichia coli […]

Q.97 In a newly discovered organism, normal development was unaffected when a few blastomeres were removed from 100-cell stage embryo. However, removal of five cells at the 1000-cell stage abolished the […]

Q.96 A genetic experiment was performed to map the gene(s) for eye colour in a newly-discovered moth species. Sex determination in this moth species: XY – male and XX – female. […]

Q.95 Which of the following is TRUE about Kreb’s cycle? (A) Kreb’s cycle generates NADPH (B) The enzymes of Kreb’s cycle reside in the inter-membrane space of a mitochondria (C) It […]

Q.94 The term innate behavior refers to an animal behavior (A) that is triggered by an environmental change (B) that is taught by the parent (C) that is developmentally fixed […]

Q.93 Which one of the following hormones is INCORRECTLY paired with its function? (A) Melatonin – biological rhythm (B) Glucagon – increases blood glucose levels (C) Prolactin – stimulates milk secretion […]

Q.92 Which one of the following examples represents an adaptation or a physiological activity that DOES NOT minimize the loss of body temperature of animals? (A) Feathers or fur (B) Fat […]

Q.91 In insect’s tracheal system, the transport of oxygen to the target tissue is done by (A) fine branches of air tubes extending to almost every cell (B) a liquid that […]

Q.90 Which of the following is a main symptom of infection by Wuchereria bancrofti? (A) Swelling of limbs (B) Skin rashes (C) Blindness (D) Brain cyst Swelling of limbs is the […]