Biology: The Dynamics of Life, California Edition

Section 1: Cellular Transport

Cellular Transport

1.
What are the characteristics of an isotonic solution?
A)When the concentration of dissolved substances in the solution is lower than the concentration of dissolved substances inside the cell.
B)When there is no concentration of dissolved substances in the solution and there is minimal concentration of dissolved substances inside the cell.
C)When the concentration of dissolved substances in the solution is higher than the concentration of dissolved substances inside the cell.
D)When the concentration of dissolved substances in the solution is the same as the concentration of dissolved substances inside the cell.
2.
__________ is when water diffuses across a selectively permeable membrane.
A)Diffusion
B)Exocytosis
C)Osmosis
D)Endocytosis
3.
Which of these statements about simple diffusion and active transport is true?
A)Simple diffusion does not use transport proteins, while active transport uses carrier proteins for transport.
B)Simple diffusion and active transport both use the concentration gradient for their direction of movement.
C)Simple diffusion and active transport are both classified as active methods of moving materials across the cell membrane.
D)Simple diffusion requires energy input from the cell, while active transport does not.
4.
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Look at the illustration of an animal cell. What does the illustration represent?
A)an isotonic solution
B)a hypertonic solution
C)concentration gradient
D)a hypotonic solution
5.
Which process does an organism use to move large molecules into a cell?
A)exocytosis
B)endocytosis
C)facilitated diffusion
D)simple diffusion
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