What will happen to a plant cell if placed in a hypertonic solution?
a. The cell will swell slightly.
b. The cell will undergo lysis.
c. The cell will become crenated.
d. The cell will remain unchanged.
e. The cell will undergo plasmolysis.
e
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A typical leaf contains __________ chloroplasts
a. 1–5 b. 20–100 c. 100,000–300,000 d. millions of
Which characteristic trait is virtually exclusive to humans?
a. ability to think b. ability to reproduce c. ability to use tools d. great manual dexterity e. ability to communicate
Anchorage dependence of animal cells in vitro or in vivo depends on which of the following?
A) attachment of spindle fibers to centrioles B) response of the cell cycle controls to signals from the plasma membrane C) the binding of cell-surface phospholipids to those of adjoining cells D) response of the cell cycle controls to the binding of cell-surface phospholipids
In a phospholipid, the phosphate would be found in which part of a membrane?
A. in the bilayer, shielded from water. B. on the surface of the membrane, interacting with water. C. in the bilayer, interacting with water. D. on the surface of the membrane, shielded from water.