You examine an animal and find that it an excretory tubule with a closed proximal end immersed in hemolymph and a
distal end that empties into the gut. You correctly identify this tubule as a ____.
a. nephron
b. hepatic tubule
c. metanephridium
d. Malpighian tubule
e. protonephridium
ANSWER: d
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All of the following terms can be used to describe hyphae except:
A) aerial and reproductive. B) septate and aseptate. C) sexual and asexual. D) vegetative.
Argon has 18 protons. How many electrons are in its third energy level?
a. 2 b. 4 c. 6 d. 8 e. 10
Red marrow is located in the area indicated by
a. A. b. B. c. C. d. D. e. E.
Which of the following physiological changes occurs when we live without zeitgebers?
a. the biological clock will be maintained but the sleep cycle shifts b. the sleep cycle will not be affected c. the sleep cycle will become random d. the person does not sleep