NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Enzymes are ____ that bind specifically to a ____ like a lock and key.
A
fats; hormone
B
proteins; substrate
C
lipids; hormone
D
carbohydrates; substrate
Explanation: 

Detailed explanation-1: -Enzymes bind substrates at key locations in their structure called active sites. They are typically highly specific and only bind certain substrates for certain reactions.

Detailed explanation-2: -The specific action of an enzyme with a single substrate can be explained using a Lock and Key analogy first postulated in 1894 by Emil Fischer. In this analogy, the lock is the enzyme and the key is the substrate. Only the correctly sized key (substrate) fits into the key hole (active site) of the lock (enzyme).

There is 1 question to complete.