Some bacteria are resistant to antimicrobials due to the activity of ________, which removes many of them
A) plasmids
B) porins
C) efflux pumps
D) lipopolysaccharides
E) ribosomes
C
Bloom's Taxonomy: Comprehension
Section: Resistance to Antimicrobial Drugs
Learning Outcome: 10.21
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Which of the following statements is true regarding respiration in birds? Choose all that
A. Bird lungs inflate due to negative pressure in the chest cavity. B. Bird lungs deflate due to negative pressure in the chest cavity. C. Oxygen enters the bloodstream via crosscurrent exchange. D. Oxygen enters the bloodstream via countercurrent exchange. E. Respiration depends on the movement of air through air sacs. F. Respiration depends on the movement of air through spiracles.
A lesion from an individual that works in a research laboratory is cultured and reveals a "fried egg" appearance with a dark center when grown on blood agar after 48 hours of incubation. The organism is nonmotile, indole, catalase, oxidase, and nitrate negative. Which of the following organism was isolated?
a. Streptobacillus sp. b. Actinobacillus sp. c. Aggregatibacter aphrophilus d. Cardiobacterium sp.
A C4 plant minimizes photorespiration by
A. stomata that are only opened at night, storing carbon dioxide in malate, and releasing carbon dioxide during the day. B. having the light reactions and carbon reactions occur in different cells, so oxygen does not come into contact with rubisco. C. having the light reactions and carbon reactions occur in different cells, so carbon dioxide does not come into contact with rubisco. D. stomata that are only opened at night, storing oxygen in malate, and releasing oxygen during the day.
Which of the chromosomes in the image at right are identical to one another before Meiosis I?
1.sister chromatids A and B only
2.sister chromatids C and D only
3.sister chromatids A and C only
4.homologues in image E
5.separated sister chromatids in image F
6.both sister chromatids A/B and C/D