Plasma membrane is made of:
Correct answer: C. Proteins, lipids and carbohydrates
- A. Proteins and carbohydrates
- B. Proteins and lipids
- C. Proteins, lipids and carbohydrates
- D. Proteins, some nucleic acids and lipids
Explanation
The plasma membrane is a dynamic and selectively permeable barrier that surrounds the cell, and it is made up of three main types of biomolecules: proteins, lipids, and carbohydrates. The lipids, mainly phospholipids, form a bilayer, while the proteins are embedded in the lipid bilayer or extend through it. The carbohydrates are often found on the outer surface of the membrane as part of glycoproteins or glycolipids.
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About Cell Structure and Function
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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