CAIE IGCSE Biology 12 Respiration Questions

Practise energy uses, aerobic and anaerobic equations, oxygen debt and respiration-rate calculations from data.

Covered syllabus points

[Maximum number: 1]

These are processes that occur in plants.

1 active transport
2 cell division
3 osmosis
4 transpiration

Which processes use energy from respiration?

1 and 2

1 and 4

2 and 3

3 and 4

[Maximum number: 1]

Some students were studying the activity of yeast. They made a fact file, as shown in Fig. 1.1.

Fig. 1.1

State the process that occurs in mitochondria to provide energy for yeast cells.

[Maximum number: 1]

Which statement about both aerobic and anaerobic respiration is correct?

They break down $\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}$ .

They produce an oxygen debt.

They use $\mathrm{CO}_{2}$ .

They use $\mathrm{O}_{2}$ .

[Maximum number: 1]

What is the effect on germinating seeds of increasing the temperature from $10^{\circ} \mathrm{C}$ to $20^{\circ} \mathrm{C}$ ?

a decrease in the production of oxygen

a decrease in the respiration rate

an increase in the respiration rate

an increase in the transpiration rate

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