Microbiology questions first of 7 sections
1. Some microbes do not have a cell membrane. a.true b.false b
2. A living cell is in equilibrium with its surroundings. a.true b.false b
3. The formation of messenger RNA from DNA is a.transportation
b.metabolism c.translation d.transcription e.none of these d
4. Algae, fungi, and protozoa are a.all eucaryotes b.all procaryotes c.some procaryotes, some eucaryotes a
5. Archaebacteria are a.procaryotes b.eucaryotes c.both procaryotes and
eucaryotes a
6. All bacteria have a cell wall. a.true b.false b
7. Fungi can be distinguished from algae because fungi a.have flagella b.are procaryotic c.are often motile d.do not have chlorophyll e.are unicellular d
8 The_________ lens is farthest from the eye. a.condenser b.ocular
c.objective a
10. The _______ microscope was developed in order to see small, living cells easily, even without staining. a.bright field b.electron c.fluorescence d.phase contrast d
11. At present, worldwide production of antibiotics totals a.hundreds of pounds b.thousands of pounds c.several tons d.several hundred tons e.much more than a thousand tons e
12. _________ provided the final disproof of spontaneous generation. a.Fleming b.Tyndall c.Spallanzanni d.Koch e.none of these e
13. Koch did his early work, leading to the development of Koch's Postulates, on _______, a disease of cattle. a.smallpox b.diphtheria c.syphilis d.plague e.anthrax e
14. Pasteurized samples are sterile a.true b.false b
15. The vast majority of amino acids in living things are isomers a.D b.L c.neither D nor L is favored b
16. The lipids of _______ are chemically peculiar, containing glycerol diethers and diglycerol tetraethers. a.eubacteria b.eucaryotes c.archaebacteria d.none of these is unique in this respect c
17. ______ bacteria do not have a lipopolysaccharide outer layer, but do have teichoic acids attached to their cell walls. a.Gram positive b.Gram negative a
18.________ refers to groups of spheres in grapelike clusters a.streptobacilli b.diplococci c.streptococci d.sarcina e.none of these e
19. Ability to distinguish fine detail is most dependent on a.contrast b.ocular clarity c.use of immersion oil d.resolution e.light intensity d
20. All biological catalysts are enzymes a.true b.false b
21.________ protein structure is established in order to maximize hydrogen bonds between atoms within the "backbone" of a polypeptide. a.primary b.secondary c.tertiary d.quaternary e.none of these b
22. Peptidoglycan is involved in construction of a.flagella b.ribosomes c.membranes d.nuclei e.none of these e
23. E. coli is Gram negative and will therefore stain pinkish in the Gram staining procedure. a.true b.false a
24. Methanogens are a.fungi b.archaebacteria c.algae d.viruses e.more than one of these b
25. A thylakoid is part of a(n) a.cellular membrane b.mitochondrion
c.motile organism d.cell wall e.chloroplast e
26. Electrons will tend to move from a redox pair ______ on the electron tower to a ______couple. a.low;lower b.high;higher c.low;high d.high;low e.two of these d
27. The third point in Koch's postulates involves a.always finding an organism b.deliberately creating disease c.growing a pure culture d. reisolation b
28. Influenza and pneumonia caused more deaths per 100,000 population in the U.S. in a.1900 b.1990 b
29. As a cell increases in size, its surface area to volume ratio a.increases b.decreases c.remains the same b
30. ______ flagellation involves flagella inserted at various places all around the cell. a.polar b.subpolar c.amphitrichous d.peritrichous e. lophotrichous d
31. ______is characteristic of endospores, but is not found in vegetative cells. a.peptidoglycan b.bactoprenol c.dipicolinic acid d.teichoic acid e.none of these c
32. A small nonprotein molecule which participates in a catalytic reaction as part of an enzyme is a(n) a.apoenzyme b.allosteric molecule c.coenzyme d.vitamin e.autozyme c
39. Most carbon dioxide is created as a result of a.glycolysis b.electron transport c.autotrophy d. photosynthesis e. the Krebs cycle e
41. _______ are present in the outer membrane of Gram negatives and transfer low molecular weight substances. a.antibiotics b.peptidoglycans c.dipicolinic acids d.porins e.none of these d
42. Mitochondrial ribosomes most closely resemble a.phospholipids b.eucaryotic ribosomes c.procaryotic ribosomes d.the flagellar basal body of Gram negatives e.procaryotic thylakoids. c