AP Bio Cells Review

What 4 structures are common between plant, animal, and bacterial cells?

• Golgi Apparatus, Chloroplasts, Ribosomes, Nucleus
• Cell Wall, Mitochondria, Cell Membrane, Cytoplasm
• Rough ER, Smooth ER, Nucleus, Ribosomes
• DNA, Cytoplasm, Ribosomes, Cell membrane

A protein that forms an ion channel through a membrane is most likely 

• a peripheral membrane protein
• a phospholipid
• an enzyme.
• a transmembrane protein

The difference between osmosis and diffusion is that

• diffusion is passive transport, whereas osmosis is active transport
• only in diffusion do molecules move from areas of high concentration to areas of low concentration
• osmosis is the opposite of diffusion and only involves the movement of water
• osmosis refers specifically to the movement of water, whereas diffusion refers to the movement of any type of molecules

If aquaporins are injected into the membranes of epithelial cells that line blood vessels,

• the flow of Na+ through aquaporins will increase
• the intracellular concentration of K+ will increase
• the membranes will become more permeable to water
• the electrical properties of the cells will be altered

A saltwater snail is placed in freshwater. What happens to its cells?

• They shrink
• They swell
• Nothing happens

Tags

NGSS.HS-LS1-3

When cells are placed in a __________ solution they begin to swell.

• Hypertonic
• Isotonic
• Hypotonic
• Equalized

Tags

NGSS.HS-LS1-3

Hydrophobic region of the cell membrane?

• E
• B
• C
• A 

A HYPERTONIC solution has a _____ concentration of solute than the interior of the cell and a cell will ______ when placed into this solution.

• lower; shrink
• lower; swell
• higher; shrink
• higher; swell

Which of the following is NOT a type of passive transport?

• diffusion
• facilitated diffusion
• osmosis
• endocytosis

What is the approximate sucrose concentration in the potato core?

• .43 M
• .30 M
• 0.0 M
• 1.0 M