What is the cell membrane composed of?
Which is the correct structure for a lipid bilayer?
Hydrophobic on the outside, neutral on the inside
Hydrophobic on the outside, hydrophilic on the inside
Hydrophilic on the outside, hydrophobic on the inside
Hydrophilic on the outside, neutral on the inside
Channel proteins are used for what purpose?
To transfer macromolecules
To transfer small solutes with the gradient
To excrete small solutes against the gradient
Active transport is used to
Move solutes with the gradient
To move solutes against the gradient
To move potassium into the cell
To move sodium into out of cell
What is NOT one of the three major lipid classes?
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