In the experiment with peacock butterflies, the working hypothesis is that
a. silence confuses both predator and prey.
b. making sounds can provide a selective advantage to the prey.
c. birds are capable of learning.
d. birds are agents of evolution.
e. unpalatable species display distinctive wings.
ANSWER: b
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Viruses that attack bacteria are called
A. phages B. proviruses C. virulent D. lytic
Exergonic reactions
A. occur when there is more free energy in the products than the reactants. B. occur when there is more free energy in the reactants than the products. C. are defined as a decrease in entropy. D. are chemoorganotrophic.
The acid-fast stain is specifically designed for bacteria whose cell walls contain which of the following?
A. Disaccharide-pentapeptide subunits B. Peptidoglycan C. Teichoic acids D. Mycolic acids
What term most correctly describes when energy released by the flow of an ion from high to low concentration fuels the transport of an unrelated substance from low to high concentration but in the same direction?
A) phosphotransferase system B) antiport C) primary active transport D) tertiary active transport E) symport