For the process of diffusion to occur, molecules must
A. move from areas of high concentration to areas of lesser concentration until an equilibrium is reached.
B. move from areas of low concentration to areas of higher concentration until an equilibrium is reached.
C. remain stationary until their molecular motion allows for an equilibrium to be reached.
D. move from areas of high concentration to areas of lesser concentration until facilitated transport can assist the molecular equilibrium.
E. move from areas of high concentration to areas of lesser concentration until an equilibrium is reached by active transport.
A
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The methanogens, producers of methane gas, require environments that
A. are directly exposed to sunlight. B. have abundant oxygen and CO2. C. are extremely cold. D. are very acidic. E. are anaerobic with hydrogen gas and CO2.
Four of the following are C3 grasses. Which one is the exception?
a. wheat b. oats c. barley d. rice e. legumes
Intron self-splicing occurs when two ________ reactions excise the intron and allow exons to ligate
Fill in the blank(s) with correct word
Which of the following antimicrobials does not match its target?
A) aminoglycosides: 30S subunit B) phenicols: 50S subunit C) macrolides: 50S subunit D) tetracyclines: 50S subunit E) lincosoamides: 50S subunit