Zooxanthellae provide some of the nutritional requirements of coral in the form of:
a. glucose.
b. fats.
c. amino acids.
d. a and c
e. b and c
D
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Which is the best explanation for how ibuprofen works?
A. It thins the blood to relieve joint pain. B. It inhibits cyclooxygenase-2, which is needed to produce prostaglandins. C. It activates cyclooxygenase-2, which then produces more prostaglandins. D. It down-regulates the production of substance P. E. It activates cyclooxygenase-2, which promotes healing of tissue.
Which of the following adaptations would NOT increase the surface area of a respiratory surface?
a. skin folds on an amphibian b. a flatworm having a broad, flat body c. branched gill filaments d. internal folds within lungs e. endothermy
During male sexual arousal ____
a. penile blood vessels are constricted b. blood flow out of the penis increases c. testosterone levels fall d. sensory nerve endings of the penis are inactivated e. blood flow to the penis is increased
The cross GE/ge × ge/ge produces the following progeny: GE/ge 404, ge/ge 396, gE/ge 97, Ge/ge 103. From these data, one can conclude that the recombinant progeny are gE/ge and Ge/ge
Indicate whether the statement is true or false