respiration

Question 1

Explain why converting pyruvate to lactate allows the continued production
of ATP by anaerobic respiration.

Answer 1

• regenerate NAD
  -so glycolysis can continue

Question 2

Describe the process of glycolysis.

Answer 2

Phosphorylation of glucose using ATP;( splits into triose phosphate)
Oxidation of triose phosphate to pyruvate;
forming reduced NAD(NADH
net gain of ATP

Question 3

in a respirometer why is it important to leave some time after temperature reached ?

Answer 3

• pressure change
  -reach equilibrium
• respiration stabilised

Question 4

Explain why a log scale is used to record the number of cells.

Answer 4

increase in numbers

Question 4

Suggest and explain why the chosen temperature was 20 °C to test respiration

Answer 4

• optimum temperature for enzymes in respiration

Question 5

Describe the advantage of the Bohr effect during intense exercise.

Answer 5

Increases dissociation of oxygen;
For aerobic respiration at the tissues/muscles/cells

Question 6

physiological change due to respiration

Answer 6

increasing breathing rate
remove carbon dioxide and take in more oxygen for aerobic respiration

Question 7

why can ATP can only be made for a
limited time.

Answer 7

limited amount of phosphocreatine