Question

A major regulatory mechanism for multistep reactions is

• A. Presence of inhibitors
• B. Availability of activators
• C. Feed-back mechanism
• D. All the above

Answer 1

The correct option is C Feed-back mechanism

• A feedback mechanism for multistep reactions is a biological occurrence wherein the output of a system amplifies the system (positive feedback) or inhibits the system (negative feedback).
• For example, a positive feedback system is childbirth. During labour, a hormone called oxytocin is released that intensifies and speeds up contractions and facilitates childbirth.
• Hence A major regulatory mechanism for multistep reactions is the feedback mechanism.
• So, the correct answer is 'Feed-back mechanism'.