Multiple Choice Questions

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During anaerobic conditions, the rate of glycolysis increases, is called

  • compensation point

  • extinction point

  • Warburg effect

  • Pasteur effect


D.

Pasteur effect

The rate of glycolysis increases because in anaerobic respiration the rate of ATP production is 2ATP per glucose mol. while in aerobic it is 38ATP per glucose so to compensate the increased ATP demand the rate of glycolysis increases.


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At high altitude, RBC's of human blood will

  • increase in number

  • decrease in number

  • decrease in size

  • increase in size


Which of the following products are obtained by anaerobic respiration from yeast?

  • Alcohols

  • CO2

  • Beer and Wine

  • All of the above


Hiccups can be best described as

  • forceful sudden expiration

  • forceful contraction of intercostal muscles during deep breathing

  • vibration of the soft palate during breathing while sleeping

  • jerky incomplete inspiration.


The volume of 'anatomical dead space' air is normally

  • 230 mL

  • 210 mL

  • 190 mL

  • 150 mL


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Which part of the nephrons is impermeable to water

  • Proximal convoluted tubule

  • Distal convoluted tubule

  • Ascending limb of loop of Henle

  • Descending limb of loop of Henle


Oxygen binding to haemoglobin in blood is

  • directly proportional to the concentration of CO2 in the medium

  • inversely proportional to the concentration of CO2 in the medium

  • directly proportional to the concentration of CO in the medium

  • independent of the concentration of CO in the medium


The vital capacity of lungs is equal to

  • 4000 ml

  • 5000 ml

  • 6000 ml

  • 7000 ml


Assertion: Smoking causes oxygen deficiency in the body.

Reason: Carbon monoxide when inhaled while smoking, combines with haemoglobin to form chemically stable compound.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


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What will be the number of Calvin cycles to generate one molecule of hexose?

  • 4

  • 6

  • 8

  • 9


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