Why are antibiotics of little value by themselves in the treatment of cholera?
What will be an ideal response?
Answer: The disease cholera is not caused by the bacterium Vibrio cholera itself but rather the enterotoxin that it produces. While antibiotic treatment will halt enterotoxin production, it does not inactivate the enterotoxins already synthesized and therefore does not immediately treat the disease.
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Please study the table below. Each pair of phrases in the same row shows a valid comparison between the anterior and posterior pituitary EXCEPT: Response ANTERIOR PITUITARY POSTERIOR PITUITARY
a secretion is stimulated by hypothalamic releasing hormones site of release for hypothalamic neurohormones b hypothalamic-pituitary circulatory system long hypothalamic axons c cortex produces glucocorticoids medulla produces epinephrine d produces hormones that stimulate milk production produces hormones that stimulate milk ejection (release) What will be an ideal response?
In reabsorption
a. plasma proteins are returned to the blood. b. excess hydrogen ions are removed from the blood. c. excess water is passed on to the urine. d. nutrients and ions are selectively returned to the blood. e. drugs and foreign substances are passed into the urine
How can the recircularization of a restriction-digested vector during a ligation reaction be minimized?
What will be an ideal response?
Which of the following statements concerning nucleic acids is CORRECT?
A. Nucleic acid strands are held together by hydrogen bonds between adjacent carbohydrates. B. Cellular DNA is double stranded. C. All viruses have DNA genomes. D. The nucleic acid polymer is composed of peptide bonds. E. There are three naturally occurring purines in nucleic acids.