What is the primary mechanism by which proteins are transported across the endoplasmic reticulum membrane during protein synthesis?

A Active transport
B Passive diffusion
C Signal sequence recognition ✓
D Facilitated diffusion

Explanation

The signal sequence recognition mechanism is responsible for targeting proteins to the endoplasmic reticulum and initiating their transport across the membrane.

Mnemonic

Signal Sequence Sends Proteins

Source

Campbell Biology, 11th edition
Protein Metabolism Biochemistry Protein Synthesis and Transport Medium MEDICAL Confidence: high