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Archaea vs Bacteria

How did they conclude that Archaea was different from bacteria? Using DNA sequences, they found that archaea and bacteria were different.
What is the morphology like for Archaea and Bacteria? (forms and aggregations) Their forms include: Cocci: Spherical shaped Bacilli: Rod shaped Sprial Their aggregations include: Diplo-: 2 in a chain Strepto-: +2 in a chain Staphylo-: group/cluster
What is the differences of nutrition between bacteria and archaea? Only archaea has the metabolism of methanogenesis Creates methane gas as by product anaerobic live in digestive tracts of animals
What are the similarities of nutrition between bacteria and archaea? Photosynthesize consumes other organisms Obtain energy from inorganic compounds (Fe, H2S)
What are the habitats of bacteria? Bacteria are mesophiles live in environments with moderate conditions some extremophile bacteria though
What are the habitats of Archaea? Archaea are extremophiles Live in extreme environments Thermophile: heat tolerant Acidophile: tolerates low pH levels Halophile: tolerates a lot of salt
How do bacteria and archaea reproduce? They reproduce asexually by binary fission copies it's chromosome and divides into 2 Cell elongates separating the 2 chromosomes A septum forms between the 2 chromosomes Septum completes formation to create cell wall Cell separates
What is conjugation? Exchanges some/all of their DNA allows for genetic variation binary fission occurs after conjugation May help survival
What are plasmids? small loops of DNA w/genes separate from the chromosome Can split and/or rejoin chromosome can be transferred to other cells during conjugation Helps genetic variation
What are endospores? Bacteria only hard-walled structures protecting the cell's genetic material resists harsh conditions formed in harsh conditions threatening survival when conditions are safe, endospore germinates into active bacterium
How are bacteria classified/identified? Gram-Positive: Cell wall w/ thick protein layer Stains Purple Gram-negative: Cell wall w/ thin protein layer Stains pink
How are prokaryotes classified/identified? size Shape nutrition DNA movement
How does bacteria impact us? causes food poisoning causes infection breaks down organic materials for us to use Produces O2 w/ photosynthesis (cyanobacteria)
How does archaea impact us? Enzymes in archaea help them withstand extreme conditions. uses the enzymes for DNA analysis and diagnosing diseases PCR (polymerase chain reaction) produces millions of copies of a DNA sequence Normal enzymes would be destroyed, not archaea
Created by: Jtboner



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