The Cell In Its Environment

All cells are surrounded by a ________ that separates the cell from the outside environment.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

The cell membrane is selectively permeable which means

• all substances may pass through it

• some substances an pass through while others cannot

• no substances can pass through it

Tags

NGSS.MS-LS1-2

Give an example of a substance that may move in/out of a cell through the cellular membrane

Tags

NGSS.MS-LS1-7

______ is the main method by which molecules move from an area of higher concentration to an area of lower concentration.

Tags

NGSS.MS-LS2-3

Substances that can move into and out of a the cell do so by one of three methods, which one of these is NOT included

• Osmosis

• Diffusion

• Active Transport

• Electrolysis

A ratio compares two numbers. It tells you how much you have of one item in comparison to another.

• true

• false

Suppose you dissolve 5 g of sugar in 1 L of water. What is the correct ratio shown?

• 5 g : 1 L

• 5 g/L

• 5 g : 5 L

• 5 g/ 5 L

The concentration of a solution can be expressed as a ratio. Suppose you dissolve 7g of salt in 1L of water. Express the concentration of the solution as a ratio.

The diffusion of water molecules across through a selectively permeable membrane is called

• active transport

• osmosis

• diffusion

• passive transport

In osmosis, water molecules move by diffusion from an area of low concentration to an area of high concentration.

• true

• false