Bacteria

100 words

Bacteria

Prokaryotes Genetic material is not in a nucleus

Bacteria

Come in three basic shapes.Sphere : cocciRod : bacilli Spiral

Bacteria : cocci

Diplococcus

http://student.ccbcmd.edu/courses/bio141/lecguide/unit1/shape/diplo.html

Bacteria : cocci

Streptococcus

http://student.ccbcmd.edu/courses/bio141/lecguide/unit1/shape/gpstrep.html

Bacteria : bacilli

Streptococcus

http://www.bioweb.uncc.edu/1110Lab/notes/notes1/labpics/lab1pics.htm

Bacteria : Spiral

http://www.uic.edu/classes/bios/bios100/labs/celllab.htm

Bacteria

We are not going to get back into cell structure, however, it is at least worth looking at bacteria mobility.

Flagellum long whip like structure spins like a propeller Rotary joint

Bacteria

http://images.encarta.msn.com/xrefmedia/aencmed/targets/illus/ilt/T028556A.gif

Bacteria

http://www.answersingenesis.org/docs/images/flagellum.jpg

Bacteria

Bacteria exist in two Kingdoms.Archaebacteria

Live in extreme environments Acids, intestines, sewage, 110 degree water etc Produce foul odors

Eubacteria Live everywhere else Many are beneficial

Bacteria Reproduction

Asexual reproduction Reproduction with only one parent binary fission

• one cell divides to form two identical cells

Sexual Reproduction Two parents combine genetic material Conjugation

• Transfer genetic material through a thin bridge

Bacteria Conjugation

http://kentsimmons.uwinnipeg.ca/16cm05/1116/27-x1-ProkaryoteConjugation.jpg

Bacteria binary fission

http://www.emc.maricopa.edu/faculty/farabee/BIOBK/69091a.jpg

A tiny glimpse at the Virus

Simple success

Virus

http://webs.wichita.edu/mschneegurt/biol103/lecture17/Ebola_EM.jpg

Virus

Non-living Do not use energy to grow Do not respond to their surroundings Sub-microscopic Unable to grow or reproduce outside a host cell.

• A host is an organism that harbors a virus or parasite.

Virus

Each viral particle, or virion, consists of just two parts Genetic material, DNA or RNA. A protective protein coat called a capsid.

Virus

Viruses multiply by entering a host cell and taking over cell function with its own genetic material.

The infected host cells then produce more protein and genetic material to assemble new virion.

Virus

http://www.ifpma.org/Influenza/index.aspx?001_The_Influenza_Virus/001a_Influenza_Virus.html

Virus

http://www.weblo.com/domain/available/grupvirus.com/

High Resolution photomicrograph of the SimianVirus

http://www.nimr.mrc.ac.uk/monkey_molecules/other_structures/