AP BIOLOGY

CELL RESPIRATION

AEROBIC RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
All living organisms use energy. The most common immediate source of energy is adenosine triphosphate (ATP) which is used in every cell for the movement of ions against a concentration gradient, known as ____
A
Ribose
B
Water
C
Hydrolysis
D
Active Transport
Explanation: 

Detailed explanation-1: -ATP synthesized in mitochondria is the primary energy source for important biological functions, such as muscle contraction, nerve impulse transmission, and protein synthesis.

Detailed explanation-2: -ATP is an excellent energy storage molecule to use as “currency” due to the phosphate groups that link through phosphodiester bonds. These bonds are high energy because of the associated electronegative charges exerting a repelling force between the phosphate groups.

Detailed explanation-3: -Most of the ATP in cells is produced by the enzyme ATP synthase, which converts ADP and phosphate to ATP. ATP synthase is located in the membrane of cellular structures called mitochondria; in plant cells, the enzyme also is found in chloroplasts.

Detailed explanation-4: -ATP acts as a cell’s storehouse of energy. It enables cells to store energy safely in small packets and release the energy for use only as and when needed. In other words, ATP serves to close the gap between energy-releasing reactions such as food breakdown and energy-requiring actions such as synthesis.

There is 1 question to complete.