Question

Which statements about isozymes are true?

a) Isozymes have identical kinetic properties
b) Lactate dehydrogenase is an example
c) Isozymes catalyze different reactions
d) Isozymes are present in various tissues
e) Isozymes are encoded by the same gene
f) Isozymes have different amino acid sequences

Answer 1

Isozymes are enzymes that have the same function but differ in physical characteristics and can catalyze different reactions.

Step-by-step explanation:

The statements that are true about isozymes are:

1. Lactate dehydrogenase is an example of an isozyme, as it exists in multiple forms known as isoenzymes.
2. Isozymes catalyze different reactions. Although they may have the same function, they differ in physical characteristics such as molecular weight, charge, electrophoretic mobility, Km, and isoelectric pH.
3. Isozymes are present in various tissues. For example, different isozymes of lactate dehydrogenase are found in different tissues of the body.