Which of these types of islands is predicted to have the least species?
A. small island near mainland
B. large island near mainland
C. large island far from mainland
D. small island far from mainland
E. small island near mainland or large island near mainland
D. small island far from mainland
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An animal with a gastrointestinal tract is the ___________.
A. jellyfish B. planarian C. hydra D. sponge E. earthworm
Which kind of chemical reaction involves the attachment or removal of a phosphate group?
A. oxidation-reduction B. acid phosphorylation C. phosphorylation D. hydrolysis
One hypothesis explaining animals' abilities to detect a magnetic field and use it to navigate is that sensory cells detect electrical fluctuations influenced by Earth's magnetic field. Which evidence, if it were true, would support this hypothesis?
A) Sensory cells of an organism known to use magnetic fields to navigate show an increase in action potential firing when in the presence of electrical fluctuations. B) Sensory cells of an organism known to use magnetic fields to navigate show a decrease in action potential firing when in the presence of electrical fluctuations. C) Sensory cells of an organism known to use magnetic fields to navigate show a greater density of negative ions on the outside of its plasma membrane. D) Sensory cells of an organism known to use magnetic fields to navigate produce greater amounts of enzymes sensitive to electrical fluctuations.
When two species are harmed, it's called
A. mutualism. B. commensalism. C. competition. D. predation.