The basic structure of plasma membrane is provided by:
Correct answer: D. Phospholipids
- A. Proteins
- B. Cholesterols
- C. Cytoskeleton
- D. Phospholipids
Explanation
The correct answer is Phospholipids because they form the bilayer that is the defining structure of the plasma membrane. This bilayer is composed of two layers of phospholipids, with hydrophilic (water-attracting) heads facing outward and hydrophobic (water-repelling) tails facing inward, creating a semi-permeable barrier.
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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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