5.2.2 - ATP As A Supply Of Energy

Question 1

What Do Plants Need Energy For?
(5 Points)

Answer 1

~ Photosynthesis.

~ Active transport.

~ DNA replication.

~ Cell division.

~ Protein synthesis.

Question 2

What Do Animals Need Energy For?
(6 Points)

Answer 2

~ Muscle contraction.

~ Maintenance of body temperature.

~ Active transport.

~ DNA replication.

~ Cell division.

~ Protein synthesis.

Question 3

Describe ATP
(2 Points)

Answer 3

~ Used to transfer and supply energy within cells, as it can diffuse within cells to where it is needed.

~ Phosphorylated molecule, consists of 3 phosphate groups.

Question 4

Describe How ATP Is Produced
(6 Points)

Answer 4

~ Produced during respiration by the addition of inorganic phosphate (ADP + Pi -> ATP).

~ ATP synthase catalyses this reaction.

~ The breakdown of glucose in respiration releases the energy needed to phosphorylate ADP.

~ The hydrolysis of ATP, releases an inorganic phosphate as well as a small amount of energy that can be used by the cell (ATP -> ADP + Pi).

~ The hydrolysis of ATP is catalysed by the enzyme ATPase.

~ The ADP + Pi produced by the hydrolysis of ATP can be recycled to make more ATP.