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Main Subjects MCQs With Answers
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Insulin is a hormone produced by which gland in the human body?
AThyroid gland
BPituitary gland
CPancreas
DAdrenal gland
Which functional unit of the human kidney filters blood to produce urine?
ANeuron
BNephron
CAlveoli
DVilli
What is the average lifespan of human Red Blood Cells (RBCs)?
A30 days
B60 days
C120 days
D180 days
Which blood group is universally known as the ‘Universal Donor’?
AA positive
BAB positive
CO negative
DO positive
What is the main chemical constituent of natural gas?
AEthane
BPropane
CMethane
DButane
Gas exchange in human lungs takes place across the walls of:
ABronchi
BTrachea
CAlveoli
DLarynx
Which enzyme present in human saliva breaks down starches into simpler sugars?
APepsin
BSalivary Amylase (Ptyalin)
CLipase
DTrypsin
Chemical name of common table salt is:
ASodium Carbonate
BSodium Bicarbonate
CSodium Chloride
DSodium Hydroxide
Which atmospheric layer contains the Earth’s protective ozone layer?
ATroposphere
BStratosphere
CMesosphere
DThermosphere