Suppose that you have a cell with a membrane that is permeable to water but not to Na+ or Cl? or any
other solute. There is more NaCl outside the cell than inside the cell, and the osmolarity of the cell is
higher than that of the solution surrounding the cell. Which of the following should occur?
a. Overall, the cell should lose water.
b. Overall, the cell should take up water, Na+, and Cl?.
c. Overall, the cell should take up water.
d. Overall, the cell should take up water and lose Na+ and Cl?.
e. Overall, the cell should lose water and take up Na+ and Cl?.
C
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Hydrangeas are a flowering plant with large showy blooms. When a plant is grown in aluminum-rich soil, it has blue flowers; if the same plant is transplanted into soil that is lacking aluminum, the flowers produced will be pink. This is an example of
A. incomplete dominance. B. monohybrid inheritance. C. polygenetic inheritance. D. environmental effects. E. codominance.
How were conditions on the early Earth of more than three billion years ago different from those on today's Earth? Unlike Earth today, early Earth _____
A) had an atmosphere rich in gases released from volcanic eruptions B) had an oxidizing atmosphere C) experienced little high energy radiation from the sun D) had an atmosphere with significant quantities of ozone
If x indicates the fossils of two closely related species, neither of which is extinct, then their remains may be found in how many of these strata?
A) one stratum B) two strata C) three strata D) four strata
The minimum inhibitory concentration (MIC) result recorded in antimicrobial testing can be defined as the:
a. lowest concentration of antimicrobial agent that should be used for optimal therapy. b. highest concentration of antimicrobial agent that should be used for optimal therapy. c. lowest antimicrobial agent concentration that completely inhibits visible bacterial growth. d. highest antimicrobial agent concentration that completely inhibits visible bacterial growth.