Cellular Processes

When the concentration of particles inside of a cell is the same as the concentration of particles outside of the cell. 

• active transport
• concentration
• diffusion
• equilibrium

Cells use energy to move materials across a membrane (low to high concentration).

• Active transport
• Passive transport
• Diffusion
• Osmosis

Cells need to bring in molecules to carry out cellular processes. Often, this requires moving the molecules across the cell membrane against the concentration gradient. How do these molecules get into the cell?

• passive transport by diffusion
• active transport using ATP 
• passive transport by osmosis
•  osmosis

 Look at the diagram of a cross-section of a cell membrane below. The cell membrane controls movement of materials into and out of the cell. 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

In passive transport, substances move across the cell membrane ________ the concentration gradient

• AGAINST

• ALONG

• WITH

• BETWEEN

What macromolecule is embedded into the lipid bilayer and helps to transport molecules?

• Carbohydrate

• Lipid

• Protein

• Nucleic Acid

Which describes a hypertonic environment?

• Too much water in the cell will cause the cell to burst - the percentage of water is higher outside the cell than inside the cell

• Too little water in the cell will cause the cell to shrink - the percentage of water is lower outside the cell than inside the cell

• Concentrations of water are equal inside and outside the cell

Tags

NGSS.HS-LS1-3

if you put a plant in salt water it will ...

• swell because water diffuses into the cells
• swell because water diffuses out of the cell
• shrivel because water diffuses out of the cell

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

The water level increases on the right because

• there are less particles on the right
• there are more particles on the right
• the right side is hypotonic
• the right side is isotonic

Which CELL contains MORE particles than are found in the surrounding solution?

• Left

• Center

• Right