Osmosis and Diffusion Honors Level

During osmosis

• water moves from low solute concentration to high solute concentration

• solute moves from a low concentration of solute to a higher concentration of solute

• water moves with the help of ATP to reach an area of lower concentration

• proteins move to reach an area with lower protein concentration

The picture below is an example of _________________.

• osmosis

• facilitated diffusion

• diffusion

• dispersion

This model is showing ________________.

• dynamic equilibrium

• diffusion

• osmosis

• no movement

Semi-permeable means ___________.

• nothing can pass through

• anything can pass through

• only certain things may pass through

• there is an equal amount of solute in and out of the cell

If the semi-permeable membrane shown is only permeable to glucose, what would occur?

• The glucose from tube A will diffuse toward tube B.

• The glucose from tube B will diffuse toward tube A.

• There will be no movement of glucose.

• The sucrose from tube B will diffuse toward tube A.

Equilibrium is when....

• there is a large amount of substance on the inside of the cell and a small amount in the outside solution

• there is a small amount of substance on the inside of the cell and a large amount in the outside solution

• there is an equal amount of substance on either side of the cell membrane

• there are no particles on either side of the the cell membrane

Tags

NGSS.HS-LS1-3

The _______ regulates what enters and leaves a cell.

• Cell Membrane

• Nucleus

• Mitochondria

• Cytoplasm

Which of the following components of the cell membrane is responsible for maintaining fluidity and flexibility in changing conditions?

• carbohydrates

• phospholipids

• cholesterol

• protein channels

The sodium-potassium pump is an example of ____________.

• facilitated diffusion

• active transport

• simple diffusion

• ion osmosis

A _________________ is shown in this image. The white circles represent the _______________ phosphate heads that like water. The black lines represent the ______________ lipid tails that dislike water.

• phospholipid bilayer / hydrophobic / hydrophilic

• phospholayer / hydrophobic / hydrophobic

• phospholipid bilayer / hydrophilic / hydrophobic

• water layer / cellular / internal