User:Atcovi/Science/Bacteria (2018)

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Types/Structures

 * Bacilli - rod-shaped bacteria.
 * Cocci - spherical shaped bacteria
 * Spirilla - spiral and corkscrew-shaped bacteria.

Cell Wall Types

 * Gram-positive bacteria - have thick peptidoglycan cell walls and stain a violet/purple color through a method called Gram-staining.
 * Gram-negative bacteria - have a much thinner peptidoglycan cell wall covered with an outer lipid layer. Appear pink or light red through Gram-staining.

Movement

 * Some bacteria do not move at all.
 * Some bacteria are propelled by flagella.
 * Some bacteria glide due to a layer of slime-like material they secrete.

Metabolic Diversity

 * Heterotrophic - Chemoheterotrophs must take in organic molecules, such as glucose, for energy and a supply of carbon--Photoheterotrophs use sunlight for energy but still need to take in an organic molecule for a carbon source.
 * Autotrophic - Photoautotrophs use light energy to convert carbon dioxide and water to carbon compounds and oxygen, while chemoautotrophs use energy from chemicals to make carbon compounds.