Cell Membrane and Diffusion

If a paramecium is in fresh water that is too hypotonic, it could explode because:

• too much water moves into the paramecium

• too much water moves out of the paramecium

• too many solutes move into the paramecium

• too many solutes move out of the paramecium

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-5

The job or function of the cell membrane is:

• break down parts of cells

• Stores water

• Supports the cell wall

• Regulates or controls what materials move in and out of the cell

Tags

NGSS.MS-LS1-2

Diffusion in cells is:

• The process by which molecules move from a region of high concentration to a region of low concentration

• The process by which cells divide

• The process by which cells produce energy

• The process by which cells absorb nutrients

The head of the phospholipid _____________ water.

• attracts

• repels

• destroys

• ignores

Tags

NGSS.MS-LS1-2

Select ALL that are PASSIVE TRANSPORT.

• Osmosis

• Diffusion

• Down or with the concentration gradient

• facilitated diffusion

• Channel protein

Food coloring that is dropped into still water will _______________ throughout the container. The food coloring moves due to___________________.

• evaporate, heat

• freeze, cold temperature

• diffuse, kinetic energy of the molecules

• explode, pressure

Which side is hypotonic for solute?

• The left side (less big dots)

• The right side (more big dots)

Tags

NGSS.MS-PS1-2

What is OSMOSIS?

• Diffusion of WATER across a selectively permeable membrane

• Movement of material from LOW to HIGH concentration

• Active transport

• Nucleus

What is the BEST answer (most specific)? Osmosis is a type of:

• passive transport

• active transport

• endocytosis

• facilitated diffusion (aquaporin)

The cell membrane is mainly made of:

• Proteins

• Carbohydrates

• Lipids

• Nucleic acids