The single most important difference between long-day and short-day plants would be the accumulation of which of the following?
A. phloem transporting genes
B. CONSTANS (CO) proteins
C. florigen
D. messenger RNA
E. flowering time genes (FT)
B. CONSTANS (CO) proteins
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In transduction, bacterial cells
a. take up pieces of DNA that are released as other cells disintegrate. b. take up pieces of DNA through the use of a virus. c. replicate DNA molecules. d. make replicate copies of one another. e. generate their own DNA.
An individual who responds to walking into an obstruction by pushing into it harder is exhibiting
a. negative phototaxis. b. positive geotaxis. c. negative thigmotaxis. d. positive thigmotaxis.
Unsaturated tails of lipids
a. are hydrophilic. b. are stable and tend to break apart. c. give the membrane a fluid quality. d. will break whenever exposed to phosphate ions. e. act as carriers.
Which of the following is NOT a characteristic of osmosis?
a. water flows from low solute concentration to high solute concentration b. occurs across a membrane freely permeable to water c. occurs across a membrane freely permeable to solutes d. passive process