BIOL 209 1st Edition Lecture 1 Outline of Current Lecture I. Define a Microorganisma. Name the different type of microorganismsII. State several ways that microbes are involved in the Earth’s ecosystemsIII. Describe the cellular makeup of microorganisms and their size range.Current LectureI. Define a Microorganisma. Microorganisman organism that cannot be seen with the naked eyeb. Classes of Microorganismsi. Bacteria (prokaryotic, ie. E. coli)ii. Virus iii. Protistsiv. Fungiv. Archaevi. Prions (smallest, is just a protein)vii. Helminths (worms)II. State several ways that microbes are involved in the Earth’s ecosystemsa. What difference do microbes make to humans?i. Positive outcomes: bacteria aid in digestion, microorganisms are responsible for producing chemicals and hormones like insulin, microbes provide protection from infectious diseases, they are used in food production (preservatives). ii. Negative outcomes: Microbes are responsible for infectious diseases causing epidemics, they are responsible for food spoilage, they can destroy populations in an area. b. Microbes in the biospherei. Biosphere Begins with energy from the sun which flows to 1.Primary Producers, 2. Primary Consumers, 3.Secondary Consumers, 4. Tertiary Consumers. 1. **Microorganisms can be producers, consumers, and decomposers. c. Microbes as decomposersi. Microbes play a crucial role in the Nitrogen Cycle1. They cycle nutrients through the ecosystem through decomposition. These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.III. Describe the cellular make up of organisms and their size rangea. Prokaryotes are smaller than eukaryotes and lack a nucleus and organellesb. Microorganisms are usually organized as a single cell or clusters of cells. c. All prokaryotes are microorganisms and include bacteria and archaeonsd. Eurkaryotes that are microorganisms include algae, protozoa, molds, and yeasts (types of fungi) and