Question

what is bromothymol blue used to measure in the experiment? the rate of cellular respiration the rate of photosynthesis the oxygen production the atp consumption

Explanation:

Bromothymol blue is a pH - indicator. In photosynthesis experiments, it can be used to measure the rate of photosynthesis. As photosynthesis occurs, carbon dioxide is consumed, which changes the pH of the solution. Bromothymol blue changes color based on pH changes. It is not typically used to measure the rate of cellular respiration, oxygen production directly, or ATP consumption.

Answer:

the rate of photosynthesis