N5 Biology Respiration

Similarities of fermentation in animal cells & yeast/fungal cells

1. Glucose is converted to pyruvate

2. Take place in the cytoplasm

3. Yields 2 molecules of

4. Occur in the absence of oxygen

5. Is enzyme controlled

Difference of fermentation in animal/muscle cells and yeast/fungal cells

1. The end products in yeast/fungal cells are ethanol and CO2

2. In animal cells the product is lactate

Where does Fermentation occur?

Cytoplasm

Name the type of respiration that yields the most ATP per glucose molecule

aerobic

Name the substance that must be present for stage 2 of said process to take place

Oxygen

State why a muscle cell requires more mitochondria than a skin cell.

Muscle cells require more ATP for movement

D

i) water ii) oxygen iii) two

A

a) i) They require a lot of ATP for movement

ii) CO2/water

b) glucose→pyruvate→ lactate + 2 ATP

Explain the purpose of the control experiments using dead peas (in an investigation of the effect of temperature on germinating pea respiration)

To show that dead peas do not respire

What are 2 uses of respiration in cells

Muscle cell contraction + cell division

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