Review part 2

A cell moves particles from a region of lesser concentration to a region of greater concentration by a. active transport b. facilitated diffusion c. osmosis d. passive transport

a

An animal cell is placed in a solution of distilled water. If left overnight, this cell will A. swell and burst B. shrivel and die C. undergo chemosynthesis D. remain the same, since it has a cell wall to protect it

a

Blood plasma and sea water have nearly the same salt concentration. What will happen to a red blood cell placed in pure water? A. it will swell B. it will disintegrate C. it will shrink D. it will divide

a

Energy is released from ATP when the bond is broken between a. two phosphate groups b. ribose and a phosphate group c. adenine and a phosphate group d. adenine and ribose

a

Why does misting fruits and vegetables with water help them look fresh? Need a Hint? A) Vacuoles fill with water due to osmosis. B) Plant cells in a hypotonic solution lose water. C) Plants do not have a rigid cell wall. D) Water cannot move through the cell membrane

a

4 CORRECT Which of the following is not true of exocytosis? A) results in hormone secretion B) does not require energy input C) allows waste matter to be expelled D) occurs at the plasma membrane

b

7. Which of the following statements about osmosis and diffusion is correct? A. Osmosis requires energy and diffusion does not. B. Both osmosis and diffusion involve the movement of molecules from areas of higher concentration to areas of lower concentration. C. Diffusion is the movement of water from areas of higher concentration to areas of lower concentration. D. Osmosis is the movement of water from areas of lower concentration to areas of higher concentration.

b

Cells have a selectively permeable membrane. What is the primary purpose of this membrane? A. to keep all of the cytoplasm inside the cell B. to control which materials enter and leave the cell C. to allow photosynthesis to occur D. to manufacture proteins

b

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 the concentration of dissolved substances in the solution is the same as the 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 there is no concentration of dissolved substances in the solution and there is minimal concentration of dissolved substances inside the cell.

b

Which conditions shown in Figure 8-4 might cause a cell to burst?

b

Which form of transport is represented in the illustration below? A. facilitated transport B. diffusion C. active transport D. osmosis

b

__________ is the difference in concentration of a substance across spaces, such as with powdered drink mix and water. a. Polarity b. Concentration gradient c. Density d. Brownian motion

b

__________ is when water diffuses across a selectively permeable membrane. a. Endocytosis b. Osmosis c. Exocytosis d. Diffusion

b

The animal cells below were placed in a hypotonic solution. What happened to the damaged cell? Need a Hint? A) Osmosis was prevented in the cell. B) Osmosis caused the cell to shrivel. C) Osmotic pressure caused the cell to rupture. D) The cell was damaged by bacteria.

c

What cell process is responsible for the transport shown below? a. active transport b. osmosis c. facilitated diffusion d. passive transport

c

Which of these statements about simple diffusion and active transport is true? a. Simple diffusion and active transport both use the concentration gradient for their direction of movement. b. Simple diffusion does not use transport proteins, while active transport uses carrier proteins for transport. 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.

c

photosynthesis and respiration is probably a A. prokaryotic cell B. mitotic cell C. plant cell D. animal cell

c

If you used a compound light microscope with an eyepiece that magnifies 10 times, what magnifications would be available to you? A) 100×, 400×, 4000×, 40,000× B) A compound light microscope will not magnify an object 10 times. C) 10×, 100×, 1000×, 10,000× D) 40×, 100×, 400×, 1000

d

Which process does an organism use to move large molecules into a cell? a. simple diffusion b. exocytosis c. endocytosis d. facilitated diffusion

d

What describes transport proteins moving molecules across the plasma membrane? Need a Hint? A) diffusion B) osmosis C) dynamic equilibrium D) facilitated diffusion

dd

Compare and contrast diffusion, facilitated diffusion, and osmosis

diffusion- small solutes move from side of high concentration to side with low concentration facilitated diffusion- molecules move across the plasma membrane with the help of a carrier molecule osmosis- diffusion of water(water uses aquaporins), water moves from the side of the membrane that has high water to the side that has low water; this is required when solutes are too big to move