A gap junction is a channel that connects adjacent cells. Which one of the following cannot pass through a gap junction?
A) ions that can regulate heartbeat
B) amino acids
C) nucleotides
D) ribosomes

Question

Quizplus · Accepted Answer

Ribosomes are organelles responsible for protein synthesis and cannot pass through a gap junction. Ions, amino acids, and nucleotides are small enough to pass through gap junctions.

A Gap Junction Is a Channel That Connects Adjacent Cells