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Bacteria 100 words. Bacteria §Prokaryotes l Genetic material is not in a nucleus.

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Presentation on theme: "Bacteria 100 words. Bacteria §Prokaryotes l Genetic material is not in a nucleus."— Presentation transcript:

1 Bacteria 100 words

2 Bacteria §Prokaryotes l Genetic material is not in a nucleus

3 Bacteria §Come in three basic shapes. §Sphere : cocci §Rod : bacilli §Spiral

4 Bacteria : cocci Diplococcus http://student.ccbcmd.edu/courses/bio141/lecguide/unit1/shape/diplo.html

5 Bacteria : cocci Streptococcus http://student.ccbcmd.edu/courses/bio141/lecguide/unit1/shape/gpstrep.html

6 Bacteria : bacilli Streptococcus http://www.bioweb.uncc.edu/1110Lab/notes/notes1/labpics/lab1pics.htm

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

8 Bacteria §We are not going to get back into cell structure, however, it is at least worth looking at bacteria mobility. §Flagellum l long whip like structure l spins like a propeller l Rotary joint

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

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

11 Bacteria §Bacteria exist in two Kingdoms. §Archaebacteria l Live in extreme environments l Acids, intestines, sewage, 110 degree water etc l Produce foul odors §Eubacteria l Live everywhere else l Many are beneficial

12 Bacteria Reproduction §Asexual reproduction l Reproduction with only one parent l binary fission one cell divides to form two identical cells §Sexual Reproduction l Two parents combine genetic material l Conjugation Transfer genetic material through a thin bridge

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

14 Bacteria binary fission http://www.emc.maricopa.edu/faculty/farabee/BIOBK/69091a.jpg

15 A tiny glimpse at the Virus Simple success

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

17 Virus §Non-living l Do not use energy to grow l Do not respond to their surroundings l Sub-microscopic l Unable to grow or reproduce outside a host cell. A host is an organism that harbors a virus or parasite.

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

19 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.

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

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

22 High Resolution photomicrograph of the SimianVirus http://www.nimr.mrc.ac.uk/monkey_molecules/other_structures/


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