What are the main functions of the leaf shape and position?
a. Absorb sunlight and nutrients
b. Absorb sunlight and water
c. Absorb sunlight and exchange gasses
d. Attract pollinators and exchange gasses
e. Attract pollinators and seed dispersers
c
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What can animals do to maintain an energy balance when food supplies become scarce in winter?
A. All of these answer options are correct. B. hibernate to reduce energy expenditure and conserve energy reserves C. migrate to areas with more abundant food supplies D. migrate to warmer areas E. build up enough of a positive energy balance during summer and fall to sustain them through the winter
The protrusible rasping organ in a mollusk's mouth that is used to scrape food from the substrate is
A. a veliger. B. a visceral mass. C. composed of nacre. D. a radula. E. an ammonite.
Jason and Ellen have had sexual problems recently. Based on past relationships, he expects that women want to have more aggressive, even "rough" sex. She, however, believes a man should be gentle, loving, and romantic during lovemaking. This is an example of _____.
Fill in the blank(s) with the appropriate word(s).
The A, P, and E sites are progressively occupied by amino acids being assembled into a polypeptide. These sites are part of
A. tRNA. B. the large ribosomal subunit. C. the spliceosome. D. mRNA. E. DNA.