Autumn Term - Corrections

Question 1

What is the word equation for anaerobic respiration in humans?

Answer 1

Glucose -> lactic acid + atp

Question 2

Plants photosynthesis in the …
But respire ….
Why?

Answer 2

Day
Both night and day
Photosynthesis requires light energy from the sun, but the sun doesn’t shine at night so it respires at night to continue living

Question 3

What does the question word ‘describe’ mean (4)

Answer 3

1. State a trend
2. Use data at start of change eg. time
3. Use data at end of change
4. Compare and link back to the trend
   DO NOT USE THE WORD BECAUSE

Question 4

Explain why the percentage of blood travelling to the muscles increases during exercise

Answer 4

1. More oxygen / glucose needed
2. Greater energy demand ( muscles working faster
3. Reduce lactic acid build up

Question 5

Suggest why cells might have different numbers of mitochondria in them

Answer 5

1. Passive process don’t required many/ have less
2. Active processes with breathing systems have more
3. Depends on metabolic demands