Select the correct answer. which of the following is an example of a beneficial mutation? a. a mutation causing uncontrolled cell division in human tissue cells b. a mutation inhibiting human immunodeficiency virus from entering the host cell c. a mutation resulting in partial or complete loss of chlorophyll pigments in plants d. a mutation resulting in a squirrel being born without ovaries

B. a mutation inhibiting human immunodeficiency virus from entering the host cell.

Explanation:

A mutation is a change in the genetic material of a particular organism, which can trigger a change in the organism. Mutations can be due to errors in (spontaneous) DNA replication as well as exposure to (induced) mutagen. They can also happen in somatic or germ cells. Generally, mutations go unnoticed or cause serious consequences, such as anomalies, but there are rare cases in which a mutation can benefit the body. An example of a beneficial mutation is a mutation that inhibits the human immunodeficiency virus from entering the host cell.

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.