How many copies of a specific allele does a somatic cell have?
a. 1
b. 2
c. 23
d. 46
e. 92
ANSWER: b
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Which of the boxes marked 1-4 correspond to plants with a heterozygous genotype?
A) 1 B) 1 and 2 C) 1, 2, and 3 D) 2 and 3 E) 2, 3, and 4
Trypan blue is
(a) taken up by living cells. (b) taken up by dead cells. (c) taken up by both living and dead cells. (d) used to identify plant cells.
Lipid soluble molecules are expected to cross the cell membrane by way of:
A. simple diffusion B. signal transduction C. facilitated diffusion D. active transport E. group translocation
The "photo-" part of the word photosynthesis refers to _____, whereas "-synthesis" refers to _____.
a. the light reactions that occur in the thylakoids b. the reactions in the stomata c. the Calvin cycle d. the Calvin cycle e. the light reactions