Bacteria Christopherson

Wake-up 1.Why are viruses not considered to be living? 1.What is a prokaryotic organism?

Pay attention to your classmates PowerPoint presentations to fill in the chart at the top of your notes.

Prokaryotic Cell Definition Simple cells that lack “membrane- bound” organelles. “Membrane- bound” means that they have an outer layer.

Label the diagram of the Prokaryotic cell in the basket Write the following on the provided notecards and match them to the appropriate structure in the diagram. CytoplasmCell Membrane CapsulePili FlagellaCell Wall RibosomesPlasmid DNA

Bacteria Structure

Bacterial Shapes: Bacillus Rod

Bacterial Shapes: Spirillum Spiral

Bacterial Shapes: Coccus Round

What Shape? Bacillus

What Shape? Coccus

Spirillum

Bacillus Spirillum Coccus

Feeding habits of Bacteria: Autotroph Producer; an organism that makes glucose (food) Photosynthesis

Where does photosynthesis take place in the majority of producers? Chloroplast

Where are the chloroplasts in Prokaryotic cells????

Autotroph #1: Photosynthesis Bacteria do NOT have chloroplasts, but have chlorophyll which allows them to go through photosynthesis

What is the summative equation for Photosynthesis? Water+ Glucose + Oxygen Sunlight Energy Carbon dioxide Reactants What is needed Products What is produced

Example Autotroph: Cyanobacteria Better known as “Blue-Green Algae” Fossils, more than 3.5 billion years old, have been found of cyanobacteria (The oldest known fossils)

One of the largest groups of bacteria The first of organisms to group to produce oxygen into the atmosphere

Autotroph #2: Chemosynthesis Process in which Bacteria make glucose in the absence of sunlight They use CO 2 and chemicals in their environment to make glucose

Chemosynthesis takes place in the Deep Sea Thermal vents at the bottom of the ocean. The first one was discovered off the coast of the Galapagos in It was about 1.5 miles/8000 feet deep

Plant Earth Video Clip (24:15)

What is an Heterotroph? Consumer; an organism that cannot make glucose (food); they need to consumer others

Heterotroph #1: Parasitic Bacteria feeds off of the host Bacteria benefits; host is harmed

Example: Streptococcus Streptococcus pneumoniae causes strep throat, meningitis, and pneumonia Transmission:Direct contact

Heterotroph: Mutualistic Bacteria and the host benefit from each other If one were to die, the other would suffer or eventually die

Example: E. coli Escherichia coli (a.k.a. E. coli) lives in the gut, where it helps digest food and produces Vitamin K. The "bad" strain of E. coli O157:H7 causes severe food borne sickness.

Example: Lactobacillus bulgaricus Lactobacillus bulgaricus helps turn milk into cheese, yogurt, and other dairy products

Heterotroph #3: Saprophytic AKA Decomposer Consumes dead organic matter

Example: Micrococcus

Binary fission: Asexual

Reproduction in unicellular organisms by division into two daughter cells What is Binary Fission?

*How fast does this occur?

Conjugation: Sexual Reproduction

The process by which genetic material is transferred from one bacteria cell to another by a sex pilus What is Conjugation?

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