Question

The combustion of sugar is a reaction between sugar and oxygen that results in carbon dioxide and water. A combustion reaction requires a large energy input to begin. How does the cell overcome the need for a large energy input to begin the reaction of glucose and oxygen during cellular respiration?

A) Enzymes lower the amount of energy necessary to begin the reaction of glucose and oxygen.
B) Enzymes physically break apart and recombine the glucose and oxygen molecules so no energy is needed for the reaction.
C) The cell creates new energy to begin the reaction between glucose and oxygen.
D) The cell uses energy from sunlight to begin the reaction between glucose and oxygen.

Answer 1

Enzymes lower the amount of energy necessary to begin the reaction of glucose and oxygen during cellular respiration.

Step-by-step explanation:

The cell overcomes the need for a large energy input to begin the reaction of glucose and oxygen during cellular respiration by using enzymes.

Enzymes are biological catalysts that speed up the rate of chemical reactions by lowering the activation energy required for the reaction to occur. In the case of cellular respiration, enzymes lower the amount of energy necessary to begin the reaction of glucose and oxygen, making it easier for the reaction to start.