The membrane surrounding each organelle
A) is composed primarily of hydrophobic proteins.
B) regulates movement into and out of the organelle.
C) is studded with ribosomes.
D) allows for interactions among molecules.
E) is perforated with pores.

Question

Quizplus · Accepted Answer

The membrane surrounding each organelle, such as the mitochondria or nucleus, is a selectively permeable membrane that regulates the movement of molecules into and out of the organelle. This is important for maintaining appropriate concentrations of molecules and ions within the organelle and the cell as a whole.

The Membrane Surrounding Each Organelle