In the Gram-staining procedure, the primary stain is
A. alcohol.
B. crystal violet.
C. iodine.
D. safranin.
Answer: B
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For every six CO2 molecules fixed, how many triose phosphates are exported from the chloroplast?
A. 12 B. 10 C. 6 D. 2 E. 1
Osmotic pressure is to a plant cell as ___ is to
a ___.
a. air; balloon b. water; water glass c. fire; campfire d. wind; windmill e. dirt; vacuum cleaner
Which of the following factors do leaching and soil
erosion have in common? a. strong winds b. mineral composition of soil c. moving water d. climate e. none of these
Lamarck's inheritance of acquired characteristics included the idea that
A. species are only produced through special creation. B. local catastrophes cause mass extinctions of species. C. there is a natural force in all living things that pushes them toward perfection. D. species are fixed and unchanging over time.