Plasma Membranes

The cell membrane is _______________ permeable.

• selectively

• somewhat

• physically

• ionically

The cell membrane is mostly made of what?

• Membrane-spanning Proteins

• Surface Proteins

• Phospholipids

• Carbohydrates

What are the two parts of a phospholipid?

• head

• enzyme

• tail

• hormone

What forms due to the two layers of phospholipids coming together?

• trilayer

• bilayer

• unilayer

The phospholipid head is _____________ & _____________

• Hydrophilic

• Hydrophobic

• Polar (+)

• Uncharged

The phospholipid tail is _____________ & _____________

• Hydrophilic

• Hydrophobic

• Polar (+)

• non-polar

What general type of protein assist in moving specific particles across the membrane?

• Membrane-spanning

• Surface

• Cholesterol

• Carbohydrates

General term for proteins that reside on the either the exterior or interior surface of the plasma membrane.

• Membrane-spanning

• Small- Surface protein

• Cholesterol

• Carbohydrates

are proteins that carry substances from one side of a biological membrane to the other

• carrier protein

• channel protein

• receptor protein

An embedded protein in the cell membrane, providing a hydrophilic passageway for small, polar ions.

• carrier protein

• channel protein

• receptor protein