Question

Some yeast , sugar and water are mixed in a test tube. Water bubbling starts in the test tube after one hour. Which process causes this change? * a) Growth b) Reproduction c) Respiration d) Irritability​

Answer 1

Answer:

C) Respiration

Explanation:

In the tube containing sugar solution and yeast, aerobic respiration will take place. So the products would be carbon dioxide and water. The tube which has a oil cover on the sugar solution, doesn't have access to oxygen. So anaerobic respiration will take place. The respiration products will be carbon dioxide, lactic acid or ethanol.

please mark me as brainlist.