The enzyme converting glucose into glucose-6-phosphate during activation stage of Glycolysis is:
A.Glucokinase
B.Phosphoglucomutase
C.Glucoisomerase
D.None of these
Category: Respiratory System Physiology Mcqs
Respiratory centre in medulla is directly affected by:
A.Venous blood entering it
B.Arterial blood entering it
C.Venous blood leaving it
D.Arterial blood leaving it
Forced deep breathing for few minutes in a person sitting at rest may be followed bya temporary cessation in breathing which is due to:
A.Too much amount of O2 in his blood
B.Too much amount of carbondioxide in his blood
C.Too much O2 and very little CO2 in his blood
D.None of these reasons
Haldane effect states that:
A.Oxyhaemoglobin behaves as a strong acid so more and more amount of it formed releases more and more H+ions
B.Deoxygenation of oxyhaemoglobin is directly proportional to PCO2
C.Increase the oxygen affinity of haemoglobin
D.None of these facts
We inhale about which of these amounts of air in one breathe:
A.200ml
B.300ml
C.400ml
D.500ml
At the end of Glycolysis how many molecules of ATP are synthesized:
A.One molecule of 3-phosphoglyceraldehyde
B.Two molecules
C.Three molecules
D.Four molecules
A person on inhaling air having well as carbon monoxide suffers from suffocation because:
A.CO reacts with O2 reducing its percentage in the air
B.Hb of blood combines with CO instead of O2 and the product cannot dissociate
C.CO affects diaphragm and internal muscles
D.CO affects nerves of the lungs
In which way the frog respires during period of hibernation:
A.Through external gills
B.Through lungs and external gills
C.Through lungs and buccopharyngeal cavity
D.Through moist skin
Enzyme bringing conversion of dihydroxy acetone phosphate into 3-phosphoglyceraldehyde is:
A.Triose phosphate isomerase
B.Aldolase
C.Glyceromutase
D.Triose mutase
