Which of the following is NOT a form of active
transport?
a. sodium-potassium pump
b. endocytosis
c. exocytosis
d. osmosis
e. none of these
Answer: d
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Two species of salamander have similar ranges, but one breeds from January to March, while the second one breeds from March to May. This is an example of
A. mechanical isolation. B. temporal isolation. C. habitat isolation. D. behavioral isolation. E. gametic isolation.
Canada geese have become a major source of Giardia and Cryptosporidium contamination of soil and fresh water.
Answer the following statement true (T) or false (F)
A new treatment for burns involves using skin biopsies to generate ____________________, which are sprayed onto
the burned area and form a new layer of skin. Fill in the blank(s) with the appropriate word(s).
In the F2 generation of the above cross, which of the following phenotypic ratios would be expected?
A) 9:3:3:1 B) 9:4:3 C) 1:1:1:1 D) 1:1:1:1:1:1 E) 6:3:3:2:1:1