1 / 28

Fig. 19-2a, p.306

coccus. bacillus. spirillum. Fig. 19-2a, p.306. cytoplasm, with ribosomes. DNA, in nucleoid. pilus. bacterial flagellum. outer capsule. cell wall. plasma membrane. Fig. 19-2b, p.306. a The bacterial chromosome is attached to the plasma membrane prior to DNA replication.

thuong
Télécharger la présentation

Fig. 19-2a, p.306

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. coccus bacillus spirillum Fig. 19-2a, p.306

  2. cytoplasm, with ribosomes DNA, in nucleoid pilus bacterial flagellum outer capsule cell wall plasma membrane Fig. 19-2b, p.306

  3. a The bacterial chromosome is attached to the plasma membrane prior to DNA replication. bReplication starts and proceeds in two directions from a certain site in the bacterial chromosome. c The DNA copy becomes attached at a membrane site near the attachment site of the parent DNA molecule. d Then the two DNA molecules are moved apart by membrane growth between two attachment sites. e Lipids, proteins, and carbohydrates are built for new membrane and new wall material. Both get inserted across the cell’s midsection. f The ongoing, orderly disposition of membrane and wall material at the midsection cuts the cell in two. Fig. 19-4, p.307

  4. to ancestors of eukaryotic cells DOMAIN BACTERIA DOMAIN ARCHAEA biochemical and molecular origin of life p.307

  5. Fig. 19-6a, p.308

  6. Fig. 19-8a-c, p.309

  7. Fig. 19-10, p.310

  8. Fig. 19-11a, p.311

  9. a Virus particle binds, injects genetic material. a Viral DNA is inserted into host chromosome by viral enzyme action DNA in protein coat sheath tail fiber b Chromosome and integrated viral DNA are replicated. e Lysis of host cell lets new virus particles escape. Lytic Pathway Lysogenic Pathway d Accessory parts are attached to viral coat. b Host replicates viral genetic material, builds viral proteins. c Cell divides; recombinant DNA in each daughter cell. c Viral proteins self-assembleinto a coat around viral DNA. d Viral enzyme excises viral DNA from chromosome. Fig. 19-13, p.313

  10. Fig. 19-16, p.314

  11. Mycobacterium tuberculosis SARS virus Ebola virus p.315

  12. Fig. 19-17, p.317

  13. Fig. 20-1a, p.318

  14. Fig. 20-1c, p.318

  15. to plants to fungi to animals apicomplexans chrysophytes diatoms ciliates brown algae green algae red algae dinoflagellates amoebozoans oomycotes STRAMENOPILES ALVEOLATES parabasalids radiolarians foraminiferans kinetoplastids euglenoids diplomonads FLAGELLATED PROTOZOANS prokaryotic ancestors Fig. 20-3, p.320

  16. Fig. 20-4, p.321

  17. long flagellum chloroplast contractile vacuole eyespot nucleus ER mitochondrion pellicle Golgi body Fig. 20-5, p.321

  18. Fig. 20-6, p.322

  19. alveolus plasma membrane (blue) p.322

  20. Fig. 20-7, p.323

  21. Fig. 20-8a, p.323

  22. Fig. 20-8b, p.323

  23. sporozoites sporozoites g Plasmodium zygotes develop inside the gut of female mosquitoes. They become sporozoites, which migrate to the insect’s salivary glands. a Mosquito bites human, bloodstream carries the sporozoites to liver. b Sporozoites asexually reproduce in liver cells. d Some of the merozoites enter liver, cause more malaria episodes. e Others develop into male, female gametocytes that are released intobloodstream. merozoite f Female mosquito bites, sucks blood from infected human. Gametocytes in blood enter her gut, mature into gametes, which fuse to form zygotes. c Offspring (merozoites) enter blood, invade red blood cells, reproduce asexually. They can do so often, over a prolonged period. Disease symptoms (fever, chills, shaking) get more and more severe. male gametocyte in red blood cell Fig. 20-9a, p.324

  24. Fig. 20-11, p.325

  25. Fig. 20-12, p.326

  26. Fig. 20-14, p.327

  27. Fig. 20-16, p.328

  28. Fig. 20-17, p.329

More Related