In an experiment designed to test the effect of temperature on goldfish respiration, the temperatures that were changed represent what type of variable?
A. correlative
B. control
C. responding
D. placebo
E. experimental
Answer: E
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Lamellipodia
A) are found in the basal lamina. B) add structural rigidity to cells. C) contain microtubules. D) are thin sheets of cytoplasm use for cell movement. E) do not involve actin or tubulin.
Which of the following is True concerning sexual selection?
A. Sexual selection always produces showy males. B. The results of sexual selection always increase the risk of predation. C. Hermaphroditic species use sexual selection to determine which sex to be during reproduction. D. Sexual dimorphism can indicate sexual selection.
All organisms need energy to carry out life processes.
a. true b. false
Which fungus commonly causes cutaneous ulcers and can cause extensive abscess formation and tissue destruction?
a) Pneumocystis jirovecii b) Histoplasma capsulatum c) Coccidioides immitis d) Blastomyces dermatitidis