Question

Suppose two students were experimenting with yeast to study cellular respiration. One student found glucose to be the most efficiently consumed sugar by yeast, whereas the other student found maltose to be the most efficiently consumed sugar by yeast. Which of the following could explain the results? A. Organisms have varying optimal conditions at which they work the best. The students may have used different temperatures or pH levels for their individual experiments. B. Different organisms process food sources differently due to the availability of food and other environmental conditions. The students may have used different yeast strains. C. Neither of the two answer choices could explain the results. D. Either of the two answer choices could explain

Answer 1

Answer:

Option D, Either of the two answer choices could explain

Explanation:

Yeast has different types of enzyme that convert different sugar into different form based on the environment. For example maltase enzyme is necessary to convert maltose sugar into simple sugar in aerobic condition under specific pH and temperature range. While on the other hand glucose can be converted into alcohol in anaerobic conditions.  

Thus, the factors which could affect the respiration pathway adopted by yeast depends on  

a) Environment condition including presence of air, temperature and pH

b) Type of food  available and enzymes

Hence, both option A and B can explain the experiment results.  

Thus, option D is correct