Question

When you add yeast to the dough, it rises because:

• A. Yeast cells reproduce by budding
• B. Budding yeast cells form chains
• C. The rapid reproducing yeast cells release carbon dioxide due to respiration
• D. Of the bulk of the new yeast cells

Answer 1

The correct option is C

The rapid reproducing yeast cells release carbon dioxide due to respiration

The correct option is C.

Explanation of the correct answer:

1. Yeast is a unicellular organism that reproduces asexually through budding.
2. It carries out the process of fermentation which converts sugar and starch into carbon dioxide and alcohol.
3. So, when yeast is added to the dough, it rises because it turns the dough into carbon dioxide and alcohol and the alcohol which is formed is evaporated during the baking process.

Final answer: When you add yeast to the dough, it rises the rapid reproducing yeast cells release carbon dioxide due to respiration.