Comprehension Passage
Catalysts are the chemical substances used in chemical reactions to accelerate the rate of reaction. Different reactions can be accelerated using different catalysts. Catalysts themselves do not get consumed in the reaction. In biological systems, enzyme serves the function of catalyst for different metabolic processes.
Which of the following statement is true regarding enzymes?
1
All vital activities will still occur even in absence of enzymes but at a slower rate.
2
An enzyme can also accommodate numerous substrate molecules simultaneously.
3
An enzyme is not sensitive to pH and temperature changes.
4
A single enzyme plays numerous roles in the different metabolic processes of our body.