Campbell Biology Chapter 16-17

Last update by hturek on 10/21/2014
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When translating secretory or membrane proteins, ribosomes are directed to the ER membrane by

A) a specific characteristic of the ribosome itself, which distinguishes free ribosomes from bound ribosomes.

B) a signal-recognition particle that brings ribosomes to a receptor protein in the ER membrane.

C) moving through a specialized channel of the nucleus.

D) a chemical signal given off by the ER.

E) a signal sequence of RNA that precedes the start codon of the message.

Answer:

B) a signal-recognition particle that brings ribosomes to a receptor protein in the ER membrane.

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