Cell Transport

What is homeostasis?

• Balance, or maintaining relatively stable conditions.

• The cell component that controls what can enter and exit the cell.

• The idea that phospholipids and proteins slide past one another in the membrane.

• The transport of molecules

Tags

NGSS.HS-LS1-3

What is the outer layer of an animal cell called?

• Plasma Membrane

• Cell Wall

• Cell Membrane

• Phospholipid Bilayer

Tags

NGSS.MS-LS1-2

What is the function of the plasma membrane?

• Balance, or maintaining relatively stable conditions.

• The cell component that controls what can enter and exit the cell.

• The idea that phospholipids and proteins slide past one another in the membrane.

• The transport of molecules

Tags

NGSS.MS-LS1-2

Why is the plasma membrane also called the phospholipid bilayer?

• Because it is composed of phospholipids in 1 layer.

• Because it is composed of phospholipids in 2 layers.

• Because it is composed of phospholipids in 3 layers.

• Because it is composed of phospholipids in 4 layers.

What is the main difference between passive and active transport?

• There is no difference.

• Passive Transport moves molecules out of the cell, while Active Transport moves molecules into the cell.

• Passive Transport ALWAYS transports with the help of proteins, while Active Transport does NOT.

• Passive Transport does NOT require energy, while Active Transport DOES require energy.

What are the types of Passive Transport?

• Solute Pumps

• Diffusion

• Osmosis

• Facilitated Diffusion

Equilibrium refers to when the concentration of molecules on one side of the membrane are _________ to the other side of the membrane.

• Greater than or equal to

• Less

• Equal

• Greater

Diffusion is the movement of molecules ...

• down a concentration gradient (from a high concentration to a low concentration)

• against a concentration gradient (from a high concentration to a low concentration)

• down a concentration gradient (from a low concentration to a high concentration

• against a concentration gradient (from a low concentration to a high concentration)

What is the main difference between diffusion and facilitated diffusion?

• Diffusion requires the help of a protein to transport molecules, whereas in facilitated diffusion the molecules transport directly across the membrane.

• Diffusion requires energy, whereas facilitated diffusion does not require energy.

• Facilitated diffusion requires the help of a protein to transport molecules, whereas in diffusion the molecules transport directly across the membrane.

• Facilitated diffusion requires energy, whereas diffusion does not require energy.

Which of the following is the movement of water down a concentration gradient (from a high to low concentration)?

• Diffusion

• Osmosis

• Facilitated Diffusion

• Active Transport