Suppose a living plant cell has ?P ? 0.4 MPa and ?S = ?0.5 MPa. If the plant cell is placed into a beaker filled with a
solution with ? = ?S ???0.9 MPa, then the cell should ____.
a. take up water until it bursts
b. lose water until its ? = ? of the solution
c. take up water until within the cell ?P = ??S
d. take up water until its ? = ?S of the solution
e. lose water until its ?S = its ?P
ANSWER: b
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What charge does the bacterial cell wall have? What charge do the various stains we used have?
What will be an ideal response?
In ____ bonds, both atoms exert the same pull on shared electrons.
A. triple covalent B. polar covalent C. double covalent D. nonpolar covalent E. coordinate covalent
In Griffith's experiments,
A. mice infected with live nonvirulent bacteria developed pneumonia and died. B. nonvirulent bacteria transformed the virulent bacteria into a nonvirulent variety. C. mice infected with heat-killed virulent bacteria and heat-killed nonvirulent bacteria developed pneumonia and died. D. mice infected with heat-killed virulent bacteria and live nonvirulent bacteria developed pneumonia and died.