Question

9. A student prepared a flask containing yeast, sugar (glucose), and

water. After 30 minutes, the flask was analyzed for the presence of
several substances.
What substance would the student expect to find if respiration occurred
in the flask?
A. a hormone
OB. starch
C. nitrogen
D. carbon dioxide

Answer 1

The student would expect to find carbon dioxide if respiration occurred in the flask.

Step-by-step explanation:

The substance that the student would expect to find if respiration occurred in the flask is carbon dioxide.

During respiration, organisms break down glucose to release energy. In the process, they produce carbon dioxide as a waste product.

The equation for respiration is: glucose + oxygen -> carbon dioxide + water + energy.

Learn more about respiration in yeast