1.
Membrane lipids are composed of:
2.
Phospholipids are the main building blocks of biological membranes. They consist of:
3.
The hydrophilic head of a phospholipid is composed of:
4.
The hydrophobic tail of a phospholipid is composed of:
5.
The fluid mosaic model describes the membrane as a mosaic of:
6.
Cholesterol is a type of lipid found in the cell membrane. Its main function is to:
7.
Which type of membrane lipid is responsible for cell signalling and serves as precursors for hormones like prostaglandins?
8.
Glycolipids are membrane lipids that have a carbohydrate moiety in their structure. They are primarily found on the outer surface of the cell membrane and function in:
9.
Which class of membrane lipids is involved in the formation of lipid rafts, which are cholesterol-rich microdomains in the cell membrane?
10.
Lipid bilayers form spontaneously in aqueous environments due to the amphipathic nature of:
11.
The lipid bilayer of biological membranes is impermeable to most ions and polar molecules due to the presence of:
12.
Which enzyme is responsible for the synthesis of phospholipids in the endoplasmic reticulum?
13.
Flippases and floppases are enzymes that regulate the movement of specific lipids between the two leaflets of the lipid bilayer. What is the main function of these enzymes?
14.
Which of the following is a function of membrane lipids in cell signalling?
15.
The fluidity of the cell membrane is influenced by the:
