ASSERTION : Glucose, Na+ and amino acids are absorbed actively. REASON : Na+, glucose and amino acids move against the concentration gradient and hence require energy.
Correct!
Wrong!
ASSERTION : According to Haldane effect, binding of oxygen with haemoglobin tends to displace carbon dioxide from the blood. REASON : It is quantitatively far more important in promoting CO2 transport than the Bohr effect in promoting O2 transport.
Correct!
Wrong!
ASSERTION : Mixing of oxygenated and deoxygenated blood occurs in reptilian and amphibian hearts. REASON : Mixing of oxygenated and deoxygenated blood occurs because of the incomplete partitioning of the auricle.
Correct!
Wrong!
ASSERTION : While on going down the loop of Henle, the filtrate becomes hypotonic. REASON: The descending limb of loop of Henle is impermearble to both water and electrolytes.
Correct!
Wrong!
ASSERTION : Rigor mortis is rigidity of muscles after death. REASON : Muscles cannot relax due to lack of ATP.
Correct!
Wrong!
ASSERTION : Nerve impulses are conducted more rapidly in myelinated nerve fibres than in nonmyelinated ones. REASON : Myelin sheath insulates the nerve fibre and prevents its depolarisation.
Correct!
Wrong!
ASSERTION : The estrogen level falls after menopause. REASON : The estrogen is synthesised and secreted mainly by uterine lining.
Correct!
Wrong!
ASSERTION : Progesterone secretion during the second and third trimester of pregnancy is a measure of functional status of corpus luteum. REASON : Corpus luteum secretes estrogen hormone for the maintenance of pregnancy.
Correct!
Wrong!
ASSERTION : At the time of implantation, which takes place in 14 days, the human embryo is called blastocyst. REASON : Implantation occurs in the gastrula stage.
Correct!
Wrong!
Assertion : Emergency contraceptive pills must be taken within 72 hours of sexual intercourse. Reason : Fertilisation usually occurs within 1-2 days of intercourse.
Correct!
Wrong!
Biology A&R Quiz - Day 2
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