Sudan IV, a dye that binds to nonpolar molecules, is used to detect the presence of macromolecules in food. Sudan IV would test positive in the presence of what macromolecule?

A. Starch
B. DNA
C. Fats
D. Hemoglobin
E. Chitin


Answer: C

Biology & Microbiology

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Which of the following are chemical compounds (or proteins) produced by plants that interfere with an herbivores' ability to break down proteins? Select all correct choices

A. protease inhibitors B. phenols C. alkaloids D. terpenes

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Many insects can sense ultraviolet light. What evolutionary advantage does this ability provide the insect?

A. the ability to detect predators B. the ability to locate flowers for nectar, their food source C. the ability to avoid other flying insects D. the ability to sense balance and position

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Which of the following is not true about the cytotoxic T cell response?

What will be an ideal response?

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Each of the following is part of the energy transduction from solar energy to chemical energy except

A) light absorption by chlorophyll. B) electron flow through an electron transport system. C) unidirectional proton pumping across a membrane. D) an electrochemical proton gradient. E) All are involved in the energy transduction.

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