Which of the following is true about antibiotics?

a. In some cases, antibiotics are able to kill pathogenic microbes without harming human cells.
b. Although some antibiotic resistance has been reported, it is not considered a real problem in medicine today.
c. Antibiotics are effective against viruses.
d. Antibiotics are unaffected by enzymes.


Ans: a. In some cases, antibiotics are able to kill pathogenic microbes without harming human cells.

Biology & Microbiology

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Males are more commonly affected by X-linked recessive genetic disorders than females because ____

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Characteristics of living organisms are

A. All of the above B. they respond to stimulus C. they grow and develop D. none of the above E. they reproduce

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When epidermal growth factor binds to its ________, the receptor phosphorylates itself, triggering a signal transduction pathway.

A. ligand-gated ion channel receptor B. thermoreceptor C. G-protein coupled receptor D. mechanoreceptor E. enzyme-linked receptor

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