Which type of RNA is not involved in protein synthesis?
1.MicroRNA
2.Ribosomal RNA
3.Transfer RNA
4.Messenger RNA
1
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Which of the following does NOT represent a chemical class of hormones?
A. carbohydrates B. amines C. peptides D. proteins E. steroids
Which of the following contributes to nosocomial disease?
A. Susceptible population B. Hospital environment C. Other patients D. Patient's own normal microbiota E. All of the choices are correct.
Hormones
A. bind to specific sensitive cells called target cells. B. are produced only by the brain. C. are required in high concentrations to have any effect. D. are only able to diffuse short distances from where they are produced.
An example of a commercially significant human protein produced in bacteria is ________. The gene for the protein is inserted into bacteria using specifically designed ________.
A. hemoglobin; vectors B. insulin; plasmids C. AZT; plasma D. globulins; hosts