Life arose from nonlife around _________ years ago.
a) 400 billion
b) 4 million
c) 8 trillion
d) 8 thousand
e) 4 billion
Ans: e) 4 billion
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Which of the following is/are type(s) of cytopathic effects?
A. Inclusions in the cytoplasm B. Rounding of cells C. Inclusions in the nucleus D. Multinucleated giant cells E. All of the choices are correct.
Zero population growth is achieved
a. when a population reaches the carrying capacity of the environment. b. when emigration and immigration are balanced, and the number of births equals the number of deaths. c. anytime that births exceed deaths. d. anytime that deaths exceed births. e. when emigration and immigration are prevented.
Which of the following is part of the urinary system,
not the reproductive system? a. ureter b. urethra c. vas deferens d. vas efferens e. epididymis
Ovaries, the female gonads, produce eggs and secrete
__________ and __________. Fill in the blank(s) with the appropriate word(s).