Yummy Gummy Diffusion

Where do cells get the oxygen, water, and nutrients they need to function?

• Stomach

• lungs

• heart

• bloodstream

Tags

NGSS.MS-LS2-1

Cell membranes are selectively permeable. What does "permeable" mean?

• unable to penetrate

• able to penetrate

• extremely thick

• extremely thin

What might happen if cell membranes did not have pores?

• Viruses and bacteria would be able to get in more easily.

• The cells would not be able to divide.

• Substances would not be able to move in and out.

• The cell membrane would become a cell wall, instead.

Tags

NGSS.MS-LS1-2

Which of the following describes a state of equilibrium?

• When water molecules have stopped moving or vibrating

• When the concentration of water outside a cell is the same as the concentration of water inside a cell

• When a cell with a lot of water in it continues to absorb water

• When the roots of a tree absorbs nutrients from the soil

Which of the following describes a state of equilibrium?

• When water molecules have stopped moving or vibrating

• When the concentration of water outside a cell is the same as the concentration of water inside a cell

• When a cell with a lot of water in it continues to absorb water

• When the roots of a tree absorbs nutrients from the soil

Tags

NGSS.MS-ESS2-4

In what direction do particles naturally diffuse?

• Up concentration gradients

• Across concentration gradients

• Down concentration gradients

• Through concentration gradients

From the information presented in the movie, what can you infer about carbon dioxide?

• It is a waste gas that your cells need to get rid of

• Your cells need a lot of it to function

• It can only be moved into and out of cells through active transport

• Its molecules are too large to fit through the pores of cells

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-3

What is the "Educated Guess" step from the Scientific Method?

• Hypothesis

• Guessing

• Setup

• Experiment

Diffusion is the natural movement of molecules from:

• Areas of low concentration to areas of high concentration

• Areas of high concentration to areas of low concentration

• Cold to hot environments

• Gaseous to liquid environments

Which of the following describes molecules moving down a concentration gradient?

• Sugar settling at the bottom of a water glass

• A cell with lots of water in it absorbing even more water

• A bottle of soda in which bubbles of carbon dioxide are evenly distributed

• Warm air moving from a radiator to fill up a room

Tags

NGSS.MS-LS2-3