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To facilitate entry of CO2 in leaf is done through stomata, as well as through the water film on the
- upper epidermis
- lower epidermis
- spongy mesophyll cells
- palisade mesophyll cells
If the drug of an addicted person is withheld, the person experiences
- insomnia
- sleep and stupor
- drawl symptoms
- death
Energy reserves are normally stored as
- glycogen
- simple sugars
- complex sugars
- sucrose
Due to adrenaline in blood, Fatigue is a
- possible short tem effect
- a long term effect
- causes diarrhea
- causes pain in stomach
Enzyme to bring about conversion of glycogen (C6H10O5)n to glucose (C6H12O6) is
- insulin
- adrenaline
- glucagon
- galactose
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A Level Biology Practice Questions
IGCSE O Level Biology Practice Tests
A Level Biology MCQ Questions
- Gas exchange system in lungs can be damaged by
- For enzyme activity in human body, optimum temperature is
- Vasoconstrictive protein that composed of a chain of eight amino acids residue which stimulates release of aldosterone and increases blood pressure is called
- Pulmonary circulation does not involve
- Lock and Key model was developed for visualization of substrate and enzyme concentration was proposed by