Both glycoproteins and proteoglycans contribute to the carbohydrate layer on the surface of the cell. Which of the following is not true of glycoproteins?

Both glycoproteins and proteoglycans contribute to the carbohydrate layer on the surface of the cell. Which of the following is not true of glycoproteins?



(a) They can be secreted into the extracellular environment.
(b) They have only one transmembrane domain.
(c) They have long carbohydrate chains.
(d) They are recognized by lectins.



Answer: 




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