Which of the following is a characteristic of the cell membrane?
a. impermeable
b. semipermeable
c. fully permeable
d. not permeable
Answer: b. semipermeable
Biology & Microbiology
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In the figure above, which number represents the point in the cell cycle during which the chromosomes are replicated?
A) I B) II C) III D) IV E) V
Biology & Microbiology
Bacteria stain as gram-positive or gram-negative because of differences in the cell
A) wall. B) cytoplasm. C) nucleus. D) chromosome.
Biology & Microbiology
Down syndrome involves trisomy ____
a. 3 b. 5 c. 15 d. 19 e. 21
Biology & Microbiology
If one side of a DNA molecule has the bases CGAT, the opposite side would have the bases _____
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology