Place the steps of the water purification process in order.
A. Chemical disinfection, aeration, filtration and settling, release into a water reservoir
B. Release into a water reservoir, aeration, filtration and settling, chemical disinfection
C. Aeration, filtration and settling, chemical disinfection, release into a water reservoir
D. Filtration and settling, chemical disinfection, aeration, release into a water reservoir
Answer: C
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In addition to antimicrobials, patients with diphtheria are treated with ________.
A. heart medication B. bronchoscopy C. antitoxin D. tracheostomy E. All of the choices are correct.
Which of the following would probably be the least surprising finding from comparing the genomes of
black cottonwood and thale cress?
a. Black cottonwood and thale cress never shared a common ancestor. d. Black cottonwood has genes that govern secondary growth, but these genes are absent in thale cress. b. Black cottonwood has genes that influence membrane transporters, but thale cress lacks genes that influence membrane transporters. e. Black cottonwood has genes for disease resistance, but thale cress lacks genes for disease resistance. c. Black cottonwood and thale cress have had the same number of gene duplication events throughout their evolutionary history.
When an F plasmid integrates into the host chromosome, the strain is referred to as ________.
A. Hfr B. F' C. F? D. F+
In rodents, horses, and lagomorphs, the digestion of cellulose takes place in the
A. cecum. B. anus. C. mouth. D. stomach. E. large intestine.