Purple bacteria II

Purple bacteria or purple photosynthetic bacteria are pigmented by bacteriochlorophyll and carotenoids, giving them a colourful range of purples, pinks and oranges. They photosynthesize without producing oxygen as a by-product. This type of bacteria are proteobacteria which are phototrophic (produce their own food via photosynthesis).

One type, purple sulphur bacteria, deposit elemental sulphur –brimstone – instead. Others oxidise iron to form rusty banded iron formations.


Golgi and friends in black

These organelles look good together. They are some of the most recognizable cellular components. All can be drawn with a few strong lines that will make them instantly identifiable. The Golgi apparatus packages macromolecules and transports them throughout the cell, in those full vesicles. Mitochondria and endoplasmic reticulum seem to be supervising the operation.