In a cell with a diploid number of 12, how many chromatids are present at prophase of mitosis?
A) 6
B) 12
C) 24
D) 48
E) none of the above
C) 24
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In an agar dilution tube, microbial colonies grow
A) at the bottom of the tube. B) on the sides of the tube, although some may be at the surface. C) embedded in the agar, rather than growing on the surface. D) on the surface, but some creep down the sides away from the surface.
The type of location where a species lives is its ________
Fill in the blank(s) with correct word
Based on U.S. Department of Agriculture guidelines, which of the following would be the best evening meal?
A. Pizza with cheese, tomato sauce, mushrooms, onion, sausage, ham, and pepperoni B. Tacos with beans, lettuce, onion, cheese, tomato C. A salad with lettuce, tomato, mandarin oranges, onion, and low fat dressing D. Hamburger on a bun with onion and mustard, and french fries
Which are important factors that affect population sizes?
a. Generation timing b. Immigration of organisms c. All of these choices d. Mortality rate