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17. Which substance on the plasma membrane helps identify chemical signals from outside the cell? a. receptor proteins b. transport proteins c. marker proteins d. cholesterol​

2 Answers

4 votes

Answer:

A

Step-by-step explanation:

Receptor proteins on the surface of cells recognize chemical signals and bind to specific ligands to bring about conformation change to cause a response in the cell.

User Stephen Nguyen
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11 votes

Answer:

Carbohydrate Chain

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User Jim Brissom
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