In homeotherms,the enzymatic reaction occurs best at . . . . . . °$C$.

Fumarase enzyme belongs to which class?

Match the following Column-$I$ with Column-$II$ and select the correct option.

Column-$I$	Column-$II$
$(A)$ Transferases	$(i)$ $H_4P_2O_7$ related reactions
$(B)$ Lyases	$(ii)$ Hexokinase
$(C)$ Isomerases	$(iii)$ Cytochrome oxidase
$(D)$ Ligases	$(iv)$ Aldolase
$(E)$ Oxidoreductases	$(v)$ Glucose-$6$-phosphate $\rightarrow$ Fructose-$6$-phosphate

Under which conditions do metabolic reactions generally occur at a slower rate?

The given graph shows the effect of substrate concentration on the rate of reaction of the enzyme green-gram-phosphatase. What does the graph indicate?

In the modern system of nomenclature,which one of the following enzymes occupies the $1^{st}$ position?