Lesson 3.2 - ATP: Energy Currency of the Cell

Question 1

Define Phosphorylation

Answer 1

The transfer of a phosphate group, usually from ATP, to another molecule.

Question 2

What is the transfer of a phosphate group, usually from ATP, to another molecule known as?

Answer 2

Phosphorylation

Question 3

Define ATP Cycle

Answer 3

The cyclic and ongoing breakdown and re-synthesis of ATP.

Question 4

What is the cyclic and ongoing breakdown and re-synthesis of ATP known as?

Answer 4

ATP Cycle

Question 5

_____ supplies energy directly to chemical reaction in all cells. It is the universal energy currency in living organisms.

Answer 5

ATP supplies energy directly to chemical reaction in all cells. It is the universal energy currency in living organisms.

Question 6

ATP hydrolysis results in the formation of _____ and _____, and releases a large amount of free energy in the process.

Answer 6

ATP hydrolysis results in the formation of ADP and P_i, and releases a large amount of free energy in the process.

Question 7

ATP hydrolysis can be coupled to endergonic reactions in a cell to power hundreds of reactions. This process is called _____.

Answer 7

ATP hydrolysis can be coupled to endergonic reactions in a cell to power hundreds of reactions. This process is called energy coupling.

Question 8

Phosphorylation, the process of attaching a phosphate group to another organic molecule, causes the molecule to _____ free energy and become _____ reactive.

Answer 8

Phosphorylation, the process of attaching a phosphate group to another organic molecule, causes the molecule to gain free energy and become more reactive.

Question 9

_____ is regenerated from ADP and P_i during part of the _____ cycle.

Answer 9

ATP is regenerated from ADP and P_i during part of the ATP cycle.