A special group of chemical substances that are used to treat diseases caused by microbes:

A) antibiotics
B) synthetic drugs
C) semi-synthetic drugs
D) antimicrobial agent


Ans: D) antimicrobial agent

Biology & Microbiology

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What component of amino acid structure varies among different amino acids?

A) the long carbon-hydrogen tails of the molecule B) the presence of a central C atom C) the components of the R-group D) the glycerol molecule that forms the backbone of the amino acid

Biology & Microbiology

A researcher is studying the function of a peptide hormone in rabbits and humans. She notices that this hormone has a different effect in these two mammals, despite the hormone receptor having the same sequence (and structure) in both animals

What accounts for this difference in hormone function? What will be an ideal response?

Biology & Microbiology

The complete loss of either a guanine or adenine from DNA is an example of _____

A. Depurination B. Tautomeric shifts C. Deamination D. Demethylation

Biology & Microbiology

Which of the following is NOT a terpene?

A. the insect repellent citronella B. the anti-cancer agent taxol C. rubber D. polyvinyl E. terpentine

Biology & Microbiology