29. Which of the folowing is false concerning syphilis? A. The initial lesion (c

Question

29. Which of the folowing is false concerning syphilis? A. The initial lesion (chancre) at the site of entry looks something like a fever blister B. Caused by the spirochete Treponema palidom. C. Secondary syphilis is characterized by a maculopapular rash prominent on palms D. E. 30. Bacteriophages and animal viruses differ significantly in which one of the following steps? of hands and soles of feet Untreated primary/secondary sy destructive granulomas (gummas), dementia, and aortic aneurisms Diagnosis is by cultivation on appropriate selective media. A. B. attachment to host receptons requirement for uncoating (bacteriophages inject the nucleic acid, animal virus must be uncoated inside the cell exposing the nucleic acid for replication) C. replication of RNA viruses D. release E. they do not differ in any of the steps above 31. Which of the following is false concerning viroids A. infectious RNA B. infect plants C. no capsid D. infects people E. no envelope 32. All of the following are true of the algae except: A. A characteristic feature of different types is the nature of pigments. B. Major producers of oxygen. C. Many D. Major consumers of carbon dioxide. E. Source of agar and otber usefual products 33. Which of the following is false concerning differences in prokaryotes and cukaryotes? A. prokaryotes lack nuclei, ER, Golg, lysosomes. B, C. chemolithoautrophs are bacteria that utilize inorganic sources of energy and fix CO, into organic compounds D. plants and algae are photoautotrophs, all other eukaryotes are chemobeterotrophs E. oxygenic photosynthesis, including cyanobacteria, plants and algae, produces oxygen (required for our life) by splitting water 34 differ both from bacteria and eukaryotes in that archaca A. reproduce by mitosis and meiosis B. have membranes with straight carbon chains atached to glycerol with ester linkages C. have nuclei. D. have membranes with branched carbon chains attached to glycerol by ether linkages E. have no cell wall.

Explanation / Answer

1. Diagnosis of Syphilis is through Blood tests which include Venereal disease research laboratory (VDRL) and rapid plasma reagin (RPR) tests.
2. Bacteriophage is released through host cell lysis
Animal Virus gets released either through Budding (enveloped viruses) or cell rupture (nonenveloped viruses)
3. Viroids do not infect people. All known viroids are inhabitants of higher plants.
4. Most algae are non-infectious in nature.
5. Eukaryotes have linear chromosomes while prokaryotes have circular chromosomes
6. Archea have membranes with branched carbon chains attached to glycerol by ether linkages.

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