Fibers of the extracellular matrix are attached to _ in the plasma membrane.
Correct answer: D. Proteins
- A. Phospholipids
- B. Carbohydrates
- C. Glycolipids
- D. Proteins
Explanation
A network of collagen fibers and proteoglycans is found outside of the cell. Collagen connects to integrin proteins in the plasma membrane via fibronectin. On the inside of the cell, the integrins link up to the microfilaments of the cytoskeleton.
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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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