Micrl Section 5

1. In the presence of lots of tryptophan, a ribosome will move ____ through the attenuator region and transcription will _____. a.quickly;proceed b.quickly;cease c. slowly;proceed d. slowly;cease

b

2. Glucose first feeds in to a.electron transport b.the TCA cycle c.glycolysis d.fermentation e.the glutamine synthase pathway

c

3. To start the Krebs cycle, two carbons are added to four carbons to form a.glucose b.alpha keto glutarate c.pyruvate d.NADH e.none of these

e

4. The net energy gained in the form of ATP during glycolysis comes from a.oxidation of NADH b.reduction of NAD+ c.transfer of reducing power

onto pyruvate d.oxidation of an aldehyde e.none of these

d

5. If not for consumption of alcoholic beverages, our livers would probably never encounter ethanol. a.true b.false

b

6. Most of the energy available from glucose is captured during glycolysis a.true b.false

b

7. _________ producing lactic acid is an example of fermentation. a.The Krebs cycle b.electron transport c.photosynthesis d.glycolysis e.more than one of these

d

8. Which contains the fewest carbon atoms? a.glucose b.alpha keto glutarate c.pyruvate d.oxaloacetate e.two of the above are equal

c

9. The enzymes for glycolysis, in a eucaryote, are found in the a.cytoplasm b.mitochondrion c.chloroplast d.cell membrane e.eucaryotes don’t perform glycolysis

a

10. The carbon of glucose is turned into carbon dioxide in a.the Krebs cycle b.glycolysis c.electron transport d.the Calvin cycle e.none of these

a

11. The most reducing power is generated in a.glycolysis b.the Calvin cycle c.electron transport d.the Krebs cycle e.none of these is involved in making reducing power

d

12. Respiration of glucose to carbon dioxide results in a net yield of ______ ATP per glucose. a.1 b.15 c.24 d.36 e.none of these

d

13. Chemiosmosis occurs a.on a ribosome b.in the nucleus c.along a membrane d.in vacuoles e.along the cell wall

c

14. All photosynthetic bacteria generate reducing power directly using photosynthesis a.true b..false

b

15. A leaky stopper in the methylene blue reductase assay would result in an ___ estimate of the numbers of bacteria. a.over b.under

b

16. Carbon dioxide is fixed using _____. a.Krebs cycle b.glycolysis c.Calvin cycle d.chemiosmosis e.gluconeogenesis

C

17. Which TCA cycle intermediate is involved in nitrogen assimilation? a.glutamate b.glutamine c.alpha keto glutarate d.glucose e.more than

one of these

C

18. Which is involved in an anapleurotic mechanism? a.gluconeogenesis b.glutamine synthase c.glutamine synthetase d.pyruvate carboxylase e.none of these

d

19. Coliforms are a.Gram positive b.spore formers c.lactose fermenters d.all of these e.two of these

C

20. Pasteurization produces a sterile sample. a.true b.false

b

21.

________ are medically significant organisms that will survive boiling for 5-10 minutes. a.coliforms b.spore formers c.hepatitis viruses d.all of these e.two of these

e

22. Give causative agents for:

Puerperal sepsis

Relapsing fever

Rheumatic fever

Scarlet fever

Syphilis

Strep. pyo+others ; Bor . recurr; strep. pyo; strep. pyo; T . pallidum

23. Photosynthetics in aquatic habitats are generally ____ producers a.primary b.secondary c.tertiary d.quaternary e.these organisms are consumers

a

24. On the bottom of the deep ocean, you would find a.photosynthetics b.halophiles c. trophophiles d.antibiotic resistants e.hyperbarophiles

e

25. ________ are found near hydrothermal vents and can use inorganic energy sources a.auxotrophs b.phototrophs c.lithotrophs

d.hyperbarophiles e.none of these

C

26. Some animals near hydrothermal vents are intimately associated with and get their energy from lithotrophs that can oxidize sulfide a.true b.false

a

27. In evaluating biogeochemical cycles, the length of time an element remains in its “compartment” is its ______ time a.relapse b.logarithmic c.catalytic d.residence e.none of these

d

28. __________

pass through the rumen into the bloodstream and are oxidized by the ruminant as its primary source of energy. a.sugars b.celluloses c.amino acids d.bacteria e.volatile fatty acids

e

29. Are antibiotic resistant bacteria quickly lost from the gut of an animal fed antibiotics and then switched to antibiotic—free food? a.yes b.no

b

30. Oxidation of ammonia to nitrate is called a.ammonification b.nitrogen fixation c.denitrification d.nitrification e.none of these

d

31. Members of the genus, Thiobacillus, are involved in the oxidation of a.nitrogen b.iron c.sulfur d.pyrite e.none of these

C

32. Microbial leaching is especially useful for recovery of a.nitrogen b.copper c.sulfur d.tungsten e.none of these

b

33. The famous picture of a deformed girl from Minimata, Japan represented damage caused by a.Salmonellosis b.atomic contamination c.mercury poisoning d.exposure to acidic mine drainage e.none of these

C

34. Some pesticides are only partly degraded, provided some other carbon source is available through a process called a.fermentation b.cometabolism c.autotrophy d.iodophoresis e.none of these

b

35. _______ decomposition is accomplished in a large enclosed sludge

digester a.Anaerobic b.Trickling c.Aerobic d.Tertiary e.none of these

a

36. Agrobacterium is useful for a.fixing nitrogen b.making agar c.transfering genes d.destroying pesticides e.none of these

C

37. Octopine is a.a plant source of nitrogen b.a hormone c.food for a bacterium d.an attachment factor e.none of these

C

38. Can E. coli use starch as a carbon and energy source? a.yes b.no

b

39. The primary difference between transients and residents is a.acid tolerance b.ability to adhere c.ability to create organic acids d.ability to scavenge wastes e.ability to multiply

e

40. Opportunistic yeast would be most likely to proliferate in the intestines of a person a.on immunosuppressives b.in the tropics c.taking antibiotics d.experiencing stress e.drinking breast milk

C

41. A sample of hamburger that causes more colonies to form on ____ would be of greatest concern. a.TSA b.SMB c.YAP d.VRBA e.all of these would be equal

d

42. You would expect Neisseria gonorrhoeae to adhere most strongly to _____ tissue. a.urogenital b.lung c.intestinal d.stomach e.there is no reason this organism should adhere most strongly to any of these

a

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