Unit 2: Cell Transport and Cell Division Review

Which structure is most responsible for maintaining cell homeostasis?

• mitochondria

• cytoplasm

• cell membrane

• cell wall

Tags

NGSS.HS-LS1-3

Diffusion is the movement of molecules

• from an area of equilibrium to an area of high concentration

• from an area of low concentration to an area of high concentration

• from an area of high concentration to an area of low concentration

• by endocytosis and exocytosis

Which would be the best evidence that a cell is using active transport to move a substance across its cell membrane?

• Substances are moving rapidly across the cell membrane

• ATP (energy) is used to move substances from low to high concentrations

• Substances are moving from high to low concentrations

• Substances are moving through channels in the cell membrane

The diffusion of water across a selectively permeable membrane is called

• endocytosis

• active transport

• facilitated diffusion

• osmosis

Which best describes exocytosis?

• A vesicle combines with a lysosome and its contents are destroyed

• A vesicle combines with the cell membrane and its contents leave the cell

• A vesicle combines with the cell membrane and its contents enter the cell

• A vesicle combines with the nuclear envelope and its contents enter the nucleus

The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane?

• simple osmosis

• active transport

• simple diffusion

• facilitated diffusion

Which of the following illustrates Active Transport?

• diagram 1

• diagram 2

• diagram 3

• diagram 2 & 3

Small insects can walk across the surface of calm water. What is the best explanation for why this happens?

• The adhesive property of water and insects allows the insects to adhere to the water molecules

• The insects actually use their wings to hover slightly above the water's surface and they only skim it with their feet

• The insects are light enough so that they do not break the hydrogen bonds holding the water molecules together.

• The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next

Tags

NGSS.MS-PS2-5

Which of the following properties of water enable it to move from the roots to the leaves of plants?

• Water expands as it freezes

• Water is an excellent solvent and mixes well with other plant molecules

• Water exhibits adhesive behavior that allows it to stick to plant walls

• Water is able to moderate temperature

Which osmotic solution would cause water molecules to leave the cell causing it to shrink?

• isotonic solution

• hypertonic solution

• hypotonic solution

• concentrated solution