Question

Identify the components of the plasma membrane.

1) Phospholipids, proteins, cholesterol
2) Carbohydrates, nucleic acids, lipids
3) Glycolipids, glycoproteins, glycerol
4) Enzymes, hormones, antibodies

Answer 1

The plasma membrane is composed primarily of phospholipids, proteins, and cholesterol, with carbohydrates attached to some proteins and lipids to form glycolipids and glycoproteins.

Step-by-step explanation:

The components of the plasma membrane are crucial for the fundamental functions of cells, such as maintaining structure and regulating the passage of substances. The primary components include phospholipids, proteins, and cholesterol. Phospholipids form the bilayer, creating a semi-permeable barrier. Cholesterol provides flexibility and stability to the membrane while proteins act as transporters for molecules that cannot pass through the lipid bilayer on their own. Additionally, carbohydrates are attached to proteins and lipids on the membrane's exterior surface, functioning as cell recognition sites. These carbohydrate complexes are known as glycolipids and glycoproteins.