Which of the following animals would have a placenta?
A. the marsupial mammal, opossum
B. the platypus
C. the rat
D. the bullfrog
E. a fish
C. the rat
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When an apical meristem cell divides, one daughter cell is called the initial and the other is called the derivative. What are the fates of these cells?
a. The initial is used to form primary meristems, and the derivative remains part of the apical meristem. b. Both the initial and the derivative remain part of the apical meristem. c. The initial remains part of the apical meristem, and the derivative is used to form primary meristems. d. Both the initial and the derivative are used to form primary meristems. e. The initial is used to form primary meristems, and the derivative is used to form secondary meristems.
The largest human autosome is chromosome ________ and the smallest is chromosome ________
A) 1, 22 B) 1, 21 C) 1, Y D) X, 22 E) None of these
Anaerobic bacteria often play important roles in bioremediation. Which of the following is NOT an electron acceptor used by anaerobes during biodegradation reactions?
A) H2O B) CO2 C) SO4-2 D) NO3- E) Fe(III)
Select the statements that accurately reflect opportunistic infections. Select All That Apply
What will be an ideal response?