Monera4 - material or parasites which live on or within...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Monera Eubacteria Eubacteria, also known as the true bacteria, have a bad reputation. They are seen as disease causing agents. Every day new products come out adverstising their ability to destroy these microscopic but dangerous creatures. In reality, only a small percentage of these unicellular organisms cause disease. The rest fullfill many important roles in the natural world. Eubacteria can be photoautotrophs, saprophytes, or symbionts. Diversity of Eubacteria Figure %: Phylogeny of Eubacteria The Eubacteria are an ancient and diverse group. Different species have evolved to fit in every type of environment and lifestyle. They are often classified by their oxygen requirements and by the type of nutrition in which they engage. Nutrition A great many of the most familiar eubacteria are heterotrophs, meaning they must take food in from outside sources. Of the heterotrophs, the majority are saprophytes, which consume dead
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: material, or parasites, which live on or within another organism at the host's expense. In addition to the heterotrophs, there are many kinds of autotrophic bacteria, able to produce their own food. These autotrophs may be photosynthetic or chemosynthetic and may or may not use oxygen in their synthetic pathways. Cyanobacteria are the largest group of photosynthetic eubacteria. The cells of these bacteria are often much larger than other bacteria, which in the past led this group to be classified as algae rather than bacteria. In fact, cyanobacteria are still sometimes referred to as blue-green algae. These eubacteria possess pigment molecules, including chlorophyll a, the same type of chlorophyll found in higher plants. Unlike plants, in cyanobacteria the pigments are not contained within membrane-bound chloroplasts....
View Full Document

{[ snackBarMessage ]}

Page1 / 2

Monera4 - material or parasites which live on or within...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online