Diffusion & Osmosis

Which statement best describes how molecules move during DIFFUSION?

• They move from an area of HIGH concentration to an area of LOW concentration.

• They move from an area of LOW concentration to an area of HIGH concentration.

• They move closer together.

• None of the above

When a substance is evenly distributed throughout a space, that substance has reached:

• osmosis

• equilibrium

• mitosis

Which of the following is an example of diffusion?

• The smell of food travels from the kitchen to the dining room.

• Drops of food coloring begin to spread through a glass of water.

• Hot chocolate mix spreads through a mug of hot water.

• All of the above

Tags

NGSS.MS-LS2-3

The diffusion of water across a membrane is called:

• active transport

• equilibrium

• osmosis

• cellular respiration

Tags

NGSS.MS-LS1-2

Which of the following terms best describes a cell membrane?

• Permeable

• Impermeable

• Selectively permeable

• None of the above

Cell membranes are important because they:

• contain DNA

• regulate what enters and exits the cell

• produce energy for the cell

Tags

NGSS.MS-LS1-2

Plant cells have:

• a cell wall instead of a cell membrane

• a cell wall AND a cell membrane

• only a cell membrane

Both diffusion and osmosis:

• are examples of passive transport

• require energy from the cell

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

Water is the only substance that can cross our cell membranes.

• True

• False

A gummy bear placed in water for 24 hours would most likely...

• expand

• shrink

• stay the exact same size

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4