Question

1. the reading describes how atp is like a rechargeable battery. read this description carefully and try to illustrate the process to the best of your ability.
2. how many atp molecules can an average cell use each second?
3. how long does it take to recycle all the atp molecules a cell uses?

Explanation:

Step1: Recall ATP - ADP cycle

ATP (adenosine - triphosphate) has three phosphate groups. When it donates a phosphate group to a reaction, it forms ADP (adenosine - diphosphate) and an inorganic phosphate (Pi). The reaction is ATP + H₂O → ADP+Pi + energy. To recharge ADP back to ATP, energy is required which is usually obtained from cellular respiration (in mitochondria) or photosynthesis (in plants). The reaction is ADP + Pi+ energy → ATP.

Step2: Answer question 10

An average cell can use about 10 million ATP molecules each second. This is because cells have high - energy demands for processes like muscle contraction, active transport, and biosynthesis.

Step3: Answer question 11

It takes about one minute to recycle all the ATP molecules a cell uses. Cells have a limited amount of ATP, and the recycling process is very rapid to meet the continuous energy needs.

Answer:

1. Left side of cycle (recharging): ADP + Pi+ energy → ATP; Right side of cycle (discharging): ATP + H₂O → ADP + Pi+ energy
2. About 10 million
3. About one minute