The gastrovascular cavity of a sponge serves important functions in both the circulatory and ____ systems
a. digestive
b. endocrine
c. muscular
d. reproductive
e. urinary
ANSWER: a
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At the current rate of description, how long will it take to compile a complete catalog of life on Earth?
a. 5 years b. 50 years c. 500 years d. 5000 years
Judah Folkmann suggested that solid tumors __________.
a) might be desiccated by osmotic action b) might be destroyed by enhancing their ability to form new blood vessels c) might be destroyed by inhibiting their ability to form new blood vessels d) might be dissipated by enhancing the ability of cancer cells to separate from each other e) might be enlarged by breaking down neighboring tissues
The clumped distribution of coral colonies is due to ____.
A. asexual reproduction B. patchy distribution of resources C. availability of sunlight D. competition for limited resources E. uniformly available resources
T or F: Depolarization occurs in both the nerve and the muscle
What will be an ideal response?