What is the specific role of cyanobacteria (or green algae) in lichens?
A. to help attach the lichens to surfaces
B. to synthesize defensive compounds
C. to provide fungi with nutrients in usable
forms
D. to transport water throughout lichens
E. Cyanobacteria and green algae play no
role in lichens, as lichens consist of fungi.
C
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Aristotle's lantern is a tooth-bearing structure of the
a. sea stars. b. tunicates. c. acorn worms. d. sea urchins.
When the body uses triglycerides as an energy source, what are they broken into?
a. carbon dioxide and water b. glucose and glycogen c. glycerol and fatty acids d. glucose and glycerol e. glycogen and fatty acids
A positive direct ELISA result requires
A. one known antibody, one unknown antibody, and an unknown antigen. B. two known antibodies and one unknown antigen. C. two known antibodies and one known antigen. D. one known antibody, one unknown antibody, and a known antigen.
Allelopathy is
A. an example of asymmetric competition between plant species. B. the movement of genes from one species to another. C. the transmission of viruses from ticks to their primary hosts. D. an obligate mutualism between a plant and its pollinator.