The lowest concentration of an antibiotic that prevents growth is the
A. 50% inhibitory dose.
B. minimal inhibitory concentration (MIC).
C. minimal lethal concentration (MLC).
D. All of the choices are correct.
Answer: B
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Based on the figure above, which of these experimental treatments would increase the rate of sucrose transport into the cell?
A) decreasing extracellular sucrose concentration B) decreasing extracellular pH C) decreasing cytoplasmic pH D) adding an inhibitor that blocks the regeneration of ATP E) adding a substance that makes the membrane more permeable to hydrogen ions
Which of the following is NOT a fruit?
a. tomatoes b. strawberries c. sweet potatoes d. pineapple e. apples
________ describes the number of individuals at each trophic level multiplied by their dry weight
Fill in the blank(s) with correct word
Some cells have aquaporins—channels that facilitate the flow of water molecules through the plasma membrane. For these cells, what regulates the rate and direction of water diffusion across the membrane?
(a) aquaporin conformation (b) resting membrane potential (c) solute concentrations on either side of the membrane (d) availability of ATP