SAT Subject Biology Practice Question 434: Answer and Explanation

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Question: 434

4. Yeast are cultured in a flask of nutrient broth under anaerobic conditions. The yeast that are most fit are those that

A. ferment the fastest
B. consume less of the limited oxygen supply
C. survive the longest
D. produce the most ATP
E. produce the most buds

Correct Answer: E


E The definition of fitness describes an organism that is successful at passing its genes on to the next generation. Because yeast reproduce by budding, the yeast that produce the most buds are the most successful at passing their genes on and are therefore the most fit.

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