21a. explain why atp is important in biochemical reactions. 21b. give two examples of biochemical reactions and explain how an organism uses atp within the reactions.

ATP is important because it provides energy for all biochemical reactions to happen.

ATP is used in the cellular respiration process and in the operation of sodium and potassium pump pumps.

Explanation:

ATP, or adenosine triphosphate, is a small molecule considered to be the “energy currency” of cells. This fame is due to the fact that ATP can store in its chemical bonds small amounts of energy from the breakdown of food. Therefore, the Adenosine Triphosphate molecule serves as a “container” for temporary energy storage. This energy is required in all biochemical processes in the body.

When the cell needs energy, for example, to run a sodium and potassium pump, it will break down the ATP molecule. This breakdown is quite simple as it is made by hydrolysis (breakage by water). This breaks the bond between the 2nd and 3rd phosphate groups and releases the energy that kept these two groups together.

ATP is also used during cellular respiration where glucose breakdown occurs to generate ATP. In organisms without mitochondria such as bacteria, respiration occurs in a structure called a mesosome. This process uses: glucose, oxygen and produces: ATP, carbon dioxide, and water.

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the correct answer is b