Enzymes from the same organism which catalyze same reaction but are chemically and physically distinct from each other are called______________?

A. Zn / HCI
B. SOCl2 / Pyridine
C. PCI3
D. PCI5

A. CH3-X
B. (CH3)3 C-CH2 – X
C. (CH3)2 CH – X
D. (CH3)3 C – X

A. methane
B. ethane
C. propane
D. butane