The water potential of a flaccid cell you are studying is ?1.5. What is its solute potential?
A. 0.5
B. ?0.5
C. ?1.5
D. 1
E. 1.5
Answer: C
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Four of the following organisms belong in the clade of class Reptilia. Which one does not?
a. turtle b. fish c. birds d. lizards e. snakes
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Indicate whether the statement is true or false
Import of mitochondrial proteins from the cytoplasm requires
a. ATP. b. a proton electrochemical gradient across the inner membrane. c. a potassium electrochemical gradient across the inner membrane. d. ATP and a proton gradient across the inner membrane.
Which of the following factors is believed to limit the size of most bacterial cells?
A. the ability to acquire oxygen for cell respiration B. the availability of carbon in the environment C. the availability of nitrogen in the environment D. the fact that nutrients must enter the cells by simple diffusion