Some yeast, sugar and water are mixed in a test-tube.The diagrams show the test-tube at the start and after one hour.Which process causes this change?
a. growth
b. reproduction
c. respiration
d. All of the above.
Answers
Answer:
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.
Answer:
The answer to the question -"Some yeast, sugar and water are mixed in a test-tube.The diagrams show the test-tube at the start and after one hour.Which process causes this change?"is
Aerobic 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,as they don't come in contact with oxygen. So anaerobic respiration will take place. The respiration products will be carbon dioxide, lactic acid or ethanol.
We should know this also-
Aerobic respiration
A chemical process in which oxygen is used to make energy from carbohydrates (sugars). Also called aerobic metabolism, cell respiration, and oxidative metabolism.
Examples
For aerobic respiration are all multicellular organisms like birds, animals, insects, humans etc.