Plasma Membrane and Cellular Transport

Facilitated diffusion is the movement of molecules that_____

• does not require energy

• move with concentration gradient

• move through the membrane protein

• All of the above

Which does not require energy?

• simple diffusion

• facilitated diffusion

• passive transport

• All are correct

Tags

NGSS.MS-PS3-5

In diffusion, molecules move from _________ concentration?

• high to low

• low to high

• low to low

• high to high

The function of the plasma membrane is to

• 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

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

Most of the cell membrane is made of

• Lipids and proteins

• Carbohydrates

• Glucose and Amylase

• Nucleic acids

The plasma membrane is described as

• hydrophobic layer

• transport bilayer

• phosphoproteins

• fluid mosaic model

Which type of cellular transport does not require energy?

• Passive

• Active

• Endocytosis

• Exocytosis

What is osmosis?

• equal concentration

• diffusion of water through a selectively permeable membrane

• movement of sugar through a selectively permeable membrane

• non-polar tails

Tags

NGSS.MS-LS1-2

Which is true about active transport?

• It requires energy

• it does not require energy

• It moves material with the concentration gradient

• it moves material from high to low concentration