Cell Transport

1.     What separates the inside of the cell from the outside environment?

• Cell nucleus

• cytoplasm

• cell membrane

• cell transport

Tags

NGSS.MS-LS1-2

1.     Cell membranes are made of a special kind of fat called _____________________.

• phospholipds

• carbohydrates

• proteins

• jelly

1.     Which statement below best describes the structure of the cell membrane?

• It is a single layer of phospholipids

• A double layer of phospholipids with the heads facing each other and the tails on the outside.

• A double layer of phospholipids with the heads facing out and the tails facing toward each other.

• Several folded layers of membrane material with ribosomes attached across the surface.

The “doors” through the cell membrane are made of what material?

• proteins

• carbohydrates

• lipids

• water

When a cell needs to bring in materials from outside that will not easily pass through the membrane, it uses _________________ to let them in.

• phospholipids

• protein channels

• hydrophilic heads

• hydrophobic tails

1.     What are the three types of passive transport used by cells?

• Osmosis, endocytosis, and pinocytosis

• Endocytosis, pinocytosis, and Phagocytosis

• Simple diffusion, facilitated diffusion, and osmosis

• Exocytosis, pinocytosis, and facilitated diffusion

When a material enters the cell by diffusion, the material is moving from an area _______________ concentration to an area of ________________ concentration.

• High, low

• Low, high

• No, some

• Resting, active

How does raising the temperature of a material affect the speed of diffusion?

•     It slows it down.

• It has no affect.

• It stays the same.

• It speeds it up

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-2

When the cell membrane uses protein channels to move materials from an area of high concentration to and area of low concentration, this process is called _____________.

• Active transport

• Osmosis

• Diffusion

• Facilitated diffusion

______________ is the movement of water molecules from an area of high concentration to and area of low concentration.

a.    

• Active transport

• Osmosis

• Diffusion

• Facilitated diffusion