Examlex
The genes encoding the chloroplast RNA polymerase are not similar in sequence to those of RNA polymerase in cyanobacteria.
Cellular Digestion
The process by which cells break down complex molecules into simpler ones to obtain energy and remove waste materials.
Cell Membrane
The semipermeable membrane surrounding the cytoplasm of a cell, controlling entry and exit of substances.
Cytoplasm
The jelly-like substance within a cell, excluding the nucleus, that contains organelles, cytosol, and is the site of numerous biochemical reactions.
Nucleus
The central and most important part of an object, movement, or group, forming the basis for its activity and growth, or in cells, a membrane-bound organelle that contains the cell's chromosomes.
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