MB C9 Self Quiz

tokia's version from 2016-04-29 04:05


Question Answer
1. Taxonomy is the science of _____.Organisms can be named according to their _____ where they are found._____ who discovered them or what _____ they causeclassification...characteristics...who...disease
2. Who invented binomial nomenclature (a two-name identification system) and is considered the father of taxonomyCarolus Linnaeus
3. Using binomial nomenclature the first name designates the genus while the second name designates theSpecific epithet
4. Which of the following is not a characteristic of a dichotomous keyThe dichotomous key has a quartet of statements describing the characteristics of organisms
5. When writing the name of a species one should haveTwo names-genus and specific epithet...The first letter of the genus name capitalized and the second name all in lowercase letters...Two of the names that are both either italicized or underlines


Question Answer
6. Members of a species can sometimes be subdivided into subgroups calledStrains
7. What are the five kingdoms in the five-kingdom system.List the characteristics of each??
8. All of the following statements are true about the three-domain classification system exceptCompared to bacteria Archaea inhabit the same environs and have the same amount of peptidoglycan their cell walls
9. What type of bacteria are also called blue-green algaesCyanobacteria
10. All of the following pertain to archaeobacteria exceptAll lack peptidoglycan in their cell walls


Question Answer
11. Members of the Kingdom Prostia differ from members of the Kingdom Monera mainly due to the presence ofMembrane-bound nucleus
12. Viruses are acellular infectious agents that contain nucleic acid and protein.What type of nucleic acid can they haveDepending on the Family viral genomes can be single-stranded RNA...double-stranded RNA...single-stranded DNA or double-stranded DNA
13. Extreme halophiles grow in conditions containing highAmounts of salt
14. An organism that contains 36% G-C will also contain64% A-T


Question Answer
15. Genetic homologySimilarity of DNA among different organisms provides a measure of their relatedness
Phage typingEmploys the use of bacteriophages to determine similarities among different bacteria
Protein profilingPolyarylamide gel electrophoresis is used to resolve whether the same proteins are present in different organisms
Numerical taxonomyA large number of characteristics are compared and grouped according to the percentage of shared characteristics
DNA hybridizationDouble-stranded DNA from two organisms are split apart with the split strands being allowed to combine the degree of matching gives an idea of the amount of genetic homology between different organisms
G-C contentThe relative percenrages of bases of DNA are a measure of relatedness between two different organisms


Question Answer
16. DNA encoding which of the folowing cell components would most likely be conserved throughout evolution of an organismRibosomes
17. Which of the following would be the most specific method for classifying bacteriaDNA analysis
18. What life-cycle characteristics do the Chlamydiae and Rickettsiae shareBoth groups are not medically relevant in man
19. _____ are smaller than viruses contain only a fragment of _____ and contain members that are infectious.Proteinceous infectious particles or _____ are one-tenth the size of viruses contain an incorrectly folded mutant protein molecule that is self-replicating and are responsible for causing _____ infections in man and cattleViroids...RNA...prions...brain
20. Which of the following references would be most beneficial for identifying an inknown bacterial isolateMicrobiology textbook


Question Answer
21. Other techniques useful in determining evolutionary relationships among prokaryotes areDetermining the amino acid sequences of two different organisms and comparing them...Comparing ribosomal sequences and sizes between two different organisms...Comparing the amplified ribosomal RNA gene products between two different organisms using PCR technology...Immunological reactions employing monoclonal antibodies to determine the rpesence or absence of prokaryotic structures and biochemical enzymes
22. Which of the following characteristics is used to classify virusesType and arrangement of nucleic acids...Capsid shape...Presence or absence of an envelope...Presence or absence of tail structures


Question Answer
23. AnimaliaMulticellular ingestive heterotrophs
PlantaeMulticellular and photosynthetic
ProtistaUsually unicellular prokaryotes
MoneraUnicellular prokaryotes
FungiUnicellular and multicellular absorptive heterotrophs


Question Answer
24. Members of the extreme thermoacidophile group of Arhaea must withstand extremes of temperature and pH.Which major obstacle have they been able to overcome in their evolutionBeing able to withstand denaturation and/or inactivation of their enzymes
25. In the name Mycobacterium tuberculosis what is the genus name specific epithet and species name of this organismGenus-mycobacterium specific epithet-tuberculosis species name-mycobacterium tuberculosis
26. In the following diagram of the life cycle of CHlamydia trachomatis identify numbered stages 1-6 and parts (a) to (d)(1)Attachment to host cell (2)Entry by phagocytosis (3)Conversion to reticulated bodies (4) Reproduction of reticulate bodies (5)Condensation of reticulate bodies (6)Release of elementary bodies (a)Host cell (b)Nucleus (c)Reticulate body (d) Elementary body