AP BIOLOGY

CELL DIVISION

THE CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Identify the parts of a phospholipid. Identify which part is hydrophobic and hydrophilic.
A
Head is hydrophilic and two fatty acid tails are hydophobic
B
Head is hydophobic and the two fatty acid tails are hydrophilic
Explanation: 

Detailed explanation-1: -1: A phospholipid consists of a head and a tail. The “head” of the molecule contains the phosphate group and is hydrophilic, meaning that it will dissolve in water. The “tail” of the molecule is made up of two fatty acids, which are hydrophobic and do not dissolve in water.

Detailed explanation-2: -Phospholipids consist of two hydrophobic “tails, ” which are fatty acid chains, and one hydrophilic “head, ” which is phosphate group.

Detailed explanation-3: -Each phospholipid is amphipathic, with two hydrophobic tails and a hydrophilic head. The hydrophobic tails face inward towards one another, and the hydrophilic heads face outwards.

Detailed explanation-4: -The hydrophobic, or “water-fearing, ” part of a phospholipid consists of its long, nonpolar fatty acid tails. The fatty acid tails can easily interact with other nonpolar molecules, but they interact poorly with water.

Detailed explanation-5: -The plasma membrane is made of a phospholipid bilayer. A single phospholipid has a hydrophilic head and a hydrophobic tail.

There is 1 question to complete.