Bacteria vs. Virus
JUNE 8 – 12, 2020 Review: Biological Classification
From general (most species) to specific (only one species) To remember the order you can use this saying: Did King Philip Come Over For Great Spaghetti Domain Kingdom Phylum Class Order Family Genus Species Review: 3 Domains
Bacteria (Kingdom Eubacteria) Have strong exterior cell walls DNA different from all other organisms Archaea (Kingdom Archaebacteria) Have cell walls but not as strong DNA is different from bacteria and similar to eukaryotes Eukarya (Kingdoms Protista, Fungi, Plantae, and Animalia) Eukaryotes Cells with nucleus and organelles Multicellular Sexual reproduction
Review: Six Kingdoms Six Kingdoms of Life
Organisms are grouped according to Cell type – prokaryotes or eukaryotes Cell walls – do organisms have cell walls Body type – unicellular or multicellular Reproduces – sexual or asexual Nutrition – make their own food (autotrophs) or get food from eating other organisms (heterotrophs) Six Kingdoms of Life
Kingdom Cell Type Cell Wall Body Type Reproduction Nutrition
Archaebacteria Prokaryote Yes, but no Unicellular Asexual Heterotroph Peptidoglycan Autotroph
Eubacteria Prokaryote Yes, with Unicellular Asexual Usually Peptidoglycan Heterotroph
Protista Eukaryote Most do Multicellular Sexual Heterotroph Unicellular Asexual Autotroph
Fungi Eukaryote Yes with Multicellular Sexual Heterotroph Chitin Unicellular Asexual
Plantae Eukaryote Yes with Multicellular Sexual Autotroph Cellulose Asexual
Animalia Eukaryote No Multicellular Sexual Heterotroph Bacterial Organization
Bacteria
Eubacteria Archaebacteria
Found Found in Everywhere harsh environments
Live in Live in Cause Ancestors of soil human illnesses body Eukaryotic cells Bacteria
Unicellular prokaryotes with cell walls Some are harmful Produce toxins that are harmful to the host called antigens Host produces proteins called antibodies to fight antigens Others are helpful Intestinal bacteria help with digestion Probiotics help immune system Active cultures in yogurt Bacteria Structure
Ribosome Cell Cell Peptidoglycan wall membrane
Flagellum DNA Pili Bacteria Reproduction
Asexual One parent No sex necessary Binary Fission Produces identical offspring 2 steps DNA replication Cytokinesis Viruses
Non-living, need a host cell to reproduce Contain either DNA or RNA Genetic material surrounded by a protein coat called a capsid Viruses are packages of Nucleic acids Proteins Basic Structure of Viruses Viral Reproduction
Viruses are unable to reproduce without a host They take over the host and reprogram the host cell to make more viruses Therefore, the host becomes a virus factory They reproduce in two ways Lytic Cycle-where they kill the cell they are living in and make you sick right away Lysogenic Cycle-Where they live in the cell and don’t make you sick right away Bacteria vs. Virus
Bacteria Virus
Is it living? Yes No
Does it need a host to No Yes reproduce? Is it a cell? Yes, single-celled No
Does it contain genetic Yes Yes information?