CH 5

The electrochemical gradient is a the potential for movement of particles across the membrane due to the following:

Select all that apply.

• 
  electrical charge

• 
  membrane phospholipids

• 
  chemical gradient

• 
  membrane proteins

Saturated fats generally are _______at room temperature, while unsaturated fats are generally______at room temperature

• solid

• 
  clumpy

• oily

• 
  liquid

Membrane pumps are associated with:

• 
  passive movement

• 
  movement from a low concentration to a high concentration

• movement from a high concentration to a low concentration

• 
  active transport

• 
  ATP use

The plasma membrane allows some material through, but not others. This property of the plasma membrane is described as being ________ __________.

• low concentration

• 
  high concentration

• selectively permeable

Diffusion is a passive process when a substance tends to move from an area of _____ concentration to an area of ______ concentration

Match the type of particle movement with its correct definition

Active Transport

• passive, transport protein creates opening in membrane

• active, transport protein physically moves particle

• passive, transport protein physically moves particle

• 
  passive, no transport protein

Match the type of particle movement with its correct definition.

Channel-mediated facilitated diffusion

• active, transport protein physically moves particle

• passive, transport protein physically moves particle

• 
  passive, transport protein creates opening in membrane

• 
  passive, no transport protein

Match the type of particle movement with its correct definition.

Carrier-mediated facilitated diffusion

• 
  passive, transport protein creates opening in membrane

• 
  passive, no transport protein

• 
  active, transport protein physically moves particle

• 
  passive, transport protein physically moves particle

Match the type of particle movement with its correct definition.

simple diffusion

• 
  passive, transport protein physically moves particle

• passive, no transport protein

• 
  passive, transport protein creates opening in membrane

• 
  active, transport protein physically moves particle

Membrane potential is the _______difference across a membrane.

• 
  watts

• amps

• 
  voltage