Question

what solutions will you prepare to test the amount of fermentation of various sugars by yeast? a. two different sugars and yeast in each test tube. b. yeast, distilled water, and a sugar in each test tube. c. distilled water and a sugar in each test tube plus a yeast control. d. yeast and one sugar in each test tube plus a distilled water control.

Explanation:

To test the fermentation of various sugars by yeast, each test tube should have yeast (the organism doing fermentation), a sugar (the substrate for fermentation), and water (to create an appropriate environment). A control with distilled water (no sugar) can help compare if fermentation is due to the sugar. Option B has yeast, water, and a sugar (correct components for the experimental setup). Option A has two sugars (unnecessary, as we test one sugar per tube to isolate the variable). Option C lacks yeast in the experimental tubes (yeast is needed for fermentation). Option D's control (distilled water) is not set up correctly as the main tubes need water too (and the control should lack sugar, not just have water).

Answer:

B. Yeast, distilled water, and a sugar in each test tube.