The difference between diffusion and passive transport is that during diffusion molecules move ________ and in passive transport they move ________
a. through passive transporters / across the lipid bilayer
b. down concentration gradients / up concentration gradients
c. through active transporters / through passive transporters
d. across the lipid bilayer / through passive transporters
d
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What blood type would a child with the genotype IAi have?
A) A B) B C) AB D) O
What characteristic do plants, algae, and some bacteria have in common that is not shared with fungi or animals?
A) They have cell walls. B) They can do photosynthesis. C) They contain mycorrhizae. D) They have spores.
Diffusion doesn't require energy. Why do plants expend energy to actively transport minerals into root hairs?
A) Minerals are too large for diffusion. B) Mineral concentrations in the soil are too high for diffusion. C) Mineral concentrations in the soil are too low for diffusion. D) Minerals are strongly attracted to soil particles.
A protein that regulates transcription by binding to the operator is known as a(n)
A. induction protein. B. repressor. C. operon. D. promoter protein. E. operator.