IB Biology HL C1.2.10 Hl Anaerobic Respiration in Yeast Topic Practice

Question 1

[Maximum number: 1]

Bread dough is made by mixing flour, water and yeast. If the dough is then kept at about 30C30^{\circ} \mathrm{C}, it expands.

Figure for Question 1 — IB Biology HL

What is the main reason for choosing this temperature?

A

Carbon dioxide expands at this temperature.

B

This is the optimum temperature for the enzymes used in aerobic cell respiration.

C

Lactate produced by anaerobic cell respiration causes the release of carbon dioxide at this temperature.

D

At this temperature, yeast produces carbon dioxide rapidly by anaerobic cell respiration.

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