Question

1. match the following definitions with their correct term (slides 9 - 11)

phospholipids the cell membrane is composed of a double layer of
select - hydrophilic, or \water - loving\
select - hydrophobic, or \water - fearing\
select - the \water - loving\ phosphate heads face the environment and the inside of the cell
select - the \water - fearing\ lipid tails face each other on the of the membrane

Explanation:

Phospholipids form a bilayer in the cell - membrane. The hydrophilic phosphate heads face the aqueous environment (outside and inside the cell) as they are water - loving, and the hydrophobic lipid tails face each other in the interior of the membrane as they are water - fearing.

Answer:

1. Phospholipids: The cell membrane is composed of a double layer of phospholipids.
2. Hydrophilic: hydrophilic, or "water - loving"
3. Hydrophobic: hydrophobic, or "water - fearing"
4. Aqueous: The "water - loving" phosphate heads face the aqueous environment and the inside of the cell.
5. Interior: The "water - fearing" lipid tails face each other on the interior of the membrane.