What is the plasma membrane chemically composed of?
Correct answer: B. Lipids and proteins
- A. Phospholipids only
- B. Lipids and proteins
- C. Lipids and carbohydrates
- D. Glycoproteins
Explanation
The plasma membrane is made up 60-80 % of proteins, 20-40 % of lipids and a very small amount of carbohydrates.
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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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