respiration

Question 1

Describe the process of glycolysis

Answer 1

1) phosphorylation of glucose using ATP
2)oxidation of triose phosphate to pyruvare
3)net gain of ATP
4)NAD reduced

Question 2

Maktonate inhibits a reaction in the krebs cycle.explain why maktonate would decrease the uptake of oxygen in a respiring cell

Answer 2

• no reduced NAD
• oxygen is the final electron acceptor

Question 3

In muscles , pyruvate is converted to lactate during prolonged exercise explain why converting pyruvate to lactate allows the continuous production of ATP by anaerobic respiration

Answer 3

1) regenerates/produces NAD
2)glycolysis continues

Question 4

Where do the light dependent and light independant reactions occur in plants

Answer 4

light dependant = stroma
light independent = thylakoids

Question 5

Explain the role of light in photoionisation

Answer 5

Chlorophyll molecules absorb energy from photons of light , this excites 2 electrons causing them to be released from the chlorophyll

Question 6

name the 2 main stages involved in ATP production in the light dependant reaction

Answer 6

1) electron transfer chain
2) chemiosmosis