Question

Which statement about an enzyme is TRUE? 1. An enzyme is used up in chemical reactions. 2. An enzyme works on a broad range of substrates. 3. An enzyme becomes another enzyme after a reaction. 4. An enzyme's function depends on its three-dimensional shape.

Answer 1

Answer:

4

Explanation:

Enzymes are complex protein molecules produced in living cells and acts as a catalyst that regulates biochemical reactions in the body. Enzymes affect the rate of biological chemical reactions in a way that without them, these reactions are unlikely to occur. Enzymes perform their regulatory function by binding to the reactants/substrates. They are usually specific about the substrates they act on.

These specificity in their function is due to the three-dimensional shape that their building blocks (amino acid) folds into. This shape allows it to bind to a particular substrate and speed up a reaction. It is also important to note that like other catalysts, an enzyme is not used up in the reaction. Hence, it can be reused.