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Bacteria
- Domain Bacteria is composed of prokaryotic organisms that have a circular chromosome and do not have histones associated with their DNA. Additional genes may be located on small, circular pieces of DNA known as plasmids.
- Although they are unicellular, bacteria can form colonies. A biofilm is a group of bacteria aggregated together on a substrate.
- Bacteria can be divided into gram positive and gram negative types based on the amount of peptidoglycan in their cell walls.
- Some bacteria are covered by a capsule that helps them to evade their host’s immune system.
- Flagella area a means of motility for bacteria and are composed of a basal apparatus, filament and hook.
- Bacteria reproduce asexually through binary fission.
- During conjugation, DNA is transferred form one bacterial cell to another. The F factor codes for a sex pilus through which the transfer takes place.
- Bacteria play an important role in biotechnology. Through the process of transformation, bacteria take up DNA from their environment. The bacteria can then express the gene, producing a protein.
Bacteria
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
- Intro
- Comparison of Domain Archaea and Domain Bacteria
- Overview of Archaea and Bacteria
- Archaea vs. Bacteria: Nucleus, Organelles, and Organization of Genetic Material
- Archaea vs. Bacteria: Cell Walls
- Archaea vs. Bacteria: Number of Types of RNA Pol
- Archaea vs. Bacteria: Membrane Lipids
- Archaea vs. Bacteria: Introns
- Bacteria: Pathogen
- Bacteria: Decomposers and Fix Nitrogen
- Bacteria: Aerobic, Anaerobic, Strict Anaerobes & Facultative Anaerobes
- Phototrophs, Autotrophs, Heterotrophs and Chemotrophs
- Phototrophs and Chemotrophs
- Autotrophs and Heterotrophs
- Photoautotrophs and Photoheterotrophs
- Chemoautotroph and Chemoheterotrophs
- Structure of Bacteria
- Shapes: Cocci, Bacilli, Vibrio, and Spirochetes
- Structures: Plasma Membrane and Cell Wall
- Structures: Nucleoid Region, Plasmid, and Capsule Basal Apparatus, and Filament
- Structures: Flagella, Basal Apparatus, Hook, and Filament
- Structures: Pili, Fimbrae and Ribosome
- Peptidoglycan: Gram + and Gram -
- Bacterial Genomes and Reproduction
- Conjugation
- Example 1: Species
- Example 2: Bacteria and Exchange of Genetic Material
- Example 3: Ways in Which Bacteria are Beneficial to Other Organisms
- Example 4: Domain Bacteria vs. Domain Archaea
































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