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If substrate molecules increase beyond the limit, this point is called……..
a) nuturation point                    
b) denaturation point
c) saturation point                    
d) over saturation point

c

The rate of reaction…...with the increase in the concentration of substrate beyond saturation point……….
a) increases                          
b) lowers
c) doesn’t increase                             
d) none of these

c

Exercise:


The chemicals are involved as catalysts inside the living bodies are……
a) carbohydrate                  
b) fats
c) proteins                           
d) starch

c

Enzymes are biological catalysts which ……
a) allow new chemical reaction to occur
b) are used up during chemical reactions
c) alter the direction of chemical reaction
d) alter the rate of chemical reaction

d

The graph below shows that the rate of an enzyme-catalysed reaction, its rate…..

a) increases when the temperature increases
b) decreases when the temperature increases
c) increases with temperature upto a maximum of 40°C
d) remain unchanged

c