Cell Membranes and Transport: Before the Bell Biology

All cells have membranes.

• True

• False

• Only animal cells

• Only plant cells

Cell membranes consist of what biomolecule bilayer?

• Carbohydrate

• Lipid

• Protein

• Nucleic Acid

A phospholipid makes up cell membranes. Phospholipid heads are ____ and hydrophilic "water loving." The tails are ____ and hydrophobic "water fearing."

• polar, nonpolar

• nonpolar, polar

• polar, polar

• nonpolar, nonpolar

If a red blood cell swells up when placed in a solution, you would expect that the solution is ____ to the red blood cell.

• isotonic

• hypertonic

• hypotonic

• neutral