|Nuclei, mitochondria, and chloroplasts have ____ membranes.
|Mitochondrion is to matrix as chloroplast is to ____.
|The ____ endoplasmic reticulum produces lipids.
|The ____ endoplasmic reticulum produces proteins.
|Molecules of ____ RNA are synthesized in the nucleolus.
|Unlike mitochondria, chloroplasts contain ____ membranes.
|The nucleus is considered the ____ of a cell.
|The diffusion of water across a cell membrane is called ____.