Plasma Membrane and Passive Transport -Diffusion&Facilitated

The cell membrane is selectively permeable, which means...

• Everything can enter and nothing can leave

• Certain things can enter while others cannot

• Nothing can enter the cell at all

• Only glucose can enter

Tags

NGSS.MS-LS1-2

Another name for plasma membrane is....

• cell wall

• mitochondria

• cell membrane

• cellular body

Tags

NGSS.MS-LS1-2

The function of the plasma membrane is....

• regulate what enters and leaves the cell.

• fight bacteria and viruses that enter the cell.

• make sure each cell reproduces

• store DNA within the cell

Tags

NGSS.MS-LS1-2

Which transport does not require energy?

• Passive
• Active 

What is Osmosis?

• equal concentration

• diffusion of water through a selectively-permeable membrane

• movement of sugar through a membrane

• non-polar tail

Which is true about active transport?

• It requires energy

• it does not require energy

• It moves substances down the concentration gradient

• it moves material from high to low concentration

Diffusion is the movement of

• proteins from low to high concentration

• water from low to high concentration

• sugar from high to low concentration

• particles from high to low concentration

The movement of molecules against a concentration gradient

• simple diffusion

• facilitated diffusion

• active transport

• osmosis

Most of the cell membrane is made of...

• Lipids and proteins

• Carbohydrates

• Glucose and Amylase

• Nucleic acids

Small polar molecules like O₂ and CO₂enter a cell through

• simple diffusion

• osmosis

• facilitated diffusion

• phagocytosis