Cell Membrane and Transport

Which form of cellular transport can move material from a low concentration area to a high concentration area?

• Diffusion

• Facilitated Diffusion

• Osmosis

• Active Transport

Your legs are swelling due to water retention. Which of the following would use the process of osmosis to reduce water retention in your legs?

• Soaking in salt water

• Blood-letting with leeches

• Wrapping your legs in bandages

• Laying in bed to rest

Tags

NGSS.HS-LS1-3

Which of the following is NOT a characteristic of the cell membrane?

• Forms a protective boundary between the inside and outside of the cell

• Controls what enters and leaves the cell

• Composed of a double layer of phospholipids

• Contains high amounts of cellulose to maintain structure

Which of the following best defines facilitated diffusion?

• Water molecules pass through the cell membrane, moving from high to low concentration.

• Small molecules move from high to low concentration across the cell membrane.

• Molecules pass through a channel protein, moving from high concentration to low.

• Molecules use energy from ATP to pass through a channel protein against the concentration gradient.

Semi-permeable membranes...

• Allow all materials to pass through freely

• Allow some materials to pass through freely, but stops other materials

• Stop all materials from passing through

• Are rigid to protect the cell from viruses

Which of the following best describes the difference between active and passive transport?

• Active: moves material against the concentration gradient - Passive: moves material with the concentration gradient

• Active: moves material with the concentration gradient - Passive: moves material against the concentration gradient

• Active: uses no energy - Passive: uses energy

• Active: allows water, oxygen, and carbon dioxide to enter the cell - Passive: allows large molecules like lipids to enter the cell

A cell that is 90% water and 10% solute, is placed into a 70% water and 30% solute solution. The solution is ___________ to the cell.

• Hypotonic

• Hypertonic

• Isotonic

• Cryotonic

A cell is placed in a hypotonic solution. What is most likely to happen to the cell?

• It will shrink

• It will swell

• It will remain unchanged

• It will dissolve

Tags

NGSS.MS-LS1-2

A cell is placed in a hypertonic solution. What is most likely to happen to the cell?

• It will shrink

• It will swell

• It will remain unchanged

• It will dissolve

Tags

NGSS.MS-LS1-5

A cell is placed in a isotonic solution. What is most likely to happen to the cell?

• It will shrink

• It will swell

• It will remain unchanged

• It will dissolve