5A - Role of ATP in Photosynthesis

Question 1

Why do all organisms require a constant supply of energy?

Answer 1

All organisms require a constant supply of energy to maintain their cells and sustain life.

Question 2

Give examples of energy usage in organisms.

Answer 2

Energy is required for anabolic reactions, active transport, muscle contraction, and conduction of nerve impulses.

Question 3

What is ATP?

Answer 3

ATP stands for adenosine triphosphate and is used as the universal energy currency within cells.

Question 4

What is the structure of ATP?

Answer 4

ATP consists of adenine, a ribose sugar, and three phosphate groups.

Question 5

How is ATP produced from ADP?

Answer 5

ATP is produced by the addition of inorganic phosphate (Pi) to adenosine diphosphate (ADP).

Question 6

What is the process called when ATP is produced by the electron transport chain?

Answer 6

The process is called oxidative phosphorylation and occurs in the mitochondria during respiration.

Question 7

What is photophosphorylation?

Answer 7

Photophosphorylation is the production of ATP in chloroplasts during photosynthesis using light energy.

Question 8

What happens when ATP is hydrolyzed?

Answer 8

Hydrolysis of ATP releases inorganic phosphate (Pi) and a small amount of energy that can be used by the cell.

Question 8

What enzyme catalyzes the hydrolysis of ATP?

Answer 8

The enzyme ATPase catalyzes the hydrolysis of ATP.

Question 9

What is the process called when ATP is converted back to ADP and Pi?

Answer 9

The process is called dephosphorylation.

Question 10

How can ADP and Pi be recycled to make more ATP?

Answer 10

ADP and Pi can be recombined through phosphorylation to regenerate ATP.

Question 11

What is the role of ATP in muscle contraction?

Answer 11

ATP powers the interaction between actin and myosin filaments during muscle contraction.

Question 11

What is the role of ATP in active transport?

Answer 11

ATP provides energy to move substances across cell membranes or within cells against their concentration gradients.

Question 11

What is the role of ATP in anabolic reactions?

Answer 11

ATP provides the necessary energy for building new molecules from the products of digestion.

Question 12

What is the function of ATP in the conduction of nerve impulses?

Answer 12

ATP is involved in maintaining ion gradients across the neuronal membrane for nerve impulse transmission.

Question 13

How is ATP related to DNA and RNA?

Answer 13

ATP is structurally similar to the nucleotides that make up DNA and RNA.

Question 14

What is the significance of ATP as the universal energy currency?

Answer 14

ATP is used as a common energy carrier in all known forms of life.

Question 15

What happens when one phosphate group is removed from ATP?

Answer 15

Removal of one phosphate group creates adenosine diphosphate (ADP).

Question 16

What happens when two phosphate groups are removed from ATP?

Answer 16

Removal of two phosphate groups creates adenosine monophosphate (AMP).

Question 17

Where does the hydrolysis of ATP occur?

Answer 17

The hydrolysis of ATP occurs within cells, releasing energy for cellular processes.

Question 18

What’s the difference between ATPase and ATP synthase?

Answer 18

ATPase breaks down of ATP while ATP synthase synthesises of ATP.