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Unformatted text preview: Cells may have few to many mitochondria, depending on the energy requirements of cell. Mitochondria contain their own DNA and ribosomes and can self-replicate. Evidence indicates that they originated as endosymbiont bacteria. Plastids Plastids are found in the cells of plants. Animal cells do not contain plastids. In general, a plastid is a membrane-bounded organelle that stores something. (There are actually a number of structures identified as "storing something, such as vesicle, and as we shall see, vacuoles.) There are three common plastids: chloroplast, amyloplast and chromoplast. Chromoplasts Chromoplast means pigmented plastid. Store the plant pigments (notably the yellow, orange and red carotenoids) that are not water soluble, and not involved in photosynthesis Chromoplasts are abundant in orange, golden and scarlet pigmented regions of plants....
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This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.
- Spring '10