The Cell in Its Environment

What part of the cell controls how materials move into or out of the cell?

• nucleus

• golgi apparatus

• cell membrane

• cell wall

Tags

NGSS.MS-LS1-2

Cell membranes are made up primarily of _______.

• chains of carbohydrates

• nucleic acids

• spike protein chains

• a double layer of lipid molecules

What does selectively permeable mean?

• all materials are able to get through

• some materials are able to get through

• no materials are able to get through

• it's unbreakable

Which of the following are modes of passive transport?

• diffusion

• facilitated diffusion

• osmosis

• all of the above

• none of the above

The movement of dissolved materials across a cell membrane without using the cell's energy is called _______.

• passive transport

• active transport

• diffusion

• osmosis

In diffusion, molecules move

• in random directions

• from areas of low concentration to areas of high concentration

• from areas of high concentration to areas of low concentration

• away from solutes

_______ is the diffusion of water molecules across a selectively permeable membrane.

• active transport

• diffusion

• osmosis

• facilitated diffusion

In facilitated diffusion proteins form channels through which ________ can pass through the membrane.

• sugars

• lipids

• nucleic acids

• water molecules

_______ is the movement of materials across a cell membrane using cellular energy.

• passive transport

• facilitated diffusion

• active transport

• osmosis

_______ is the process by which the vacuole surrounding particles fuses with the cell membrane, forcing the contents out of the cell.

• diffusion

• osmosis

• endocytosis

• exocytosis

Tags

NGSS.MS-LS1-7