Cellular Respiration

Question 1

What is cellular respiration

Answer 1

A series of metabolic pathways which brings about the release of energy from a foodstuff and regeneration of high energy compound ATP

Question 2

What is ATP composed of?

Answer 2

Composed of adenosine and three inorganic phosphate

Question 3

What is phosphorylation

Answer 3

An enzyme controlled process by which a phosphate group is added to a molecule

• phosphorylation may occur when phosphate and energy are transferred from ATP to the molecules of a reactant in a metabolic pathway making them more reactive. Often a step in a pathway can proceed only if a reactant becomes phosphorylated and energised

Question 4

What is glycolysis

Answer 4

The breakdown of glucose to pyruvate in the cytoplasm

Question 5

Electron transport chain steps

Answer 5

An electron transport chain is a group of protein molecules that are in the membrane of the Cristae

Question 6

What are dehydronase enzymes

Answer 6

They remove hydrogen ions from the respiratory substrate along with high energy electrons

NAD — NADH
FAD — FADH2

Question 7

Where is the electron transport chain located

Answer 7

Attached to the inner membrane of the mitochondria