Plant plasma membrane and cell-wall structure A plant cell wall is arranged in layers and contains cellulose microfibrils, hemicellulose, pectin, lignin, and soluble protein.

Mitochondria are cell organelles surrounded by a double membrane. In addition to numerous essential functions in the metabolism of the cell, they also play a key role in the integration of signals ...

Kenneth R. Miller, Structure of a Bacterial Photosynthetic Membrane, Proceedings of the National Academy of Sciences of the United States of America, Vol. 76, No. 12 (Dec., 1979), pp. 6415-6419 ...