What is the origin and physiological function of restriction endonucleases?
A) Bacteriophage produce them to gain resistance to antibiotics.
B) Restriction endonucleases are required for DNA replication in yeast.
C) Bacteria produce them to protect against viral invasion.
D) Scientists invented them and synthesize them in labs.
C) Bacteria produce them to protect against viral invasion.
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Insulin is a product of the
A. pancreas. B. stomach. C. brain. D. kidney. E. liver.
Even after a positive test for a microbial cause, chronic prostatitis is unresponsive to antibiotic therapy. Why might this be the case?
A. Mixed species biofilms are hard to eliminate with antibiotics. B. The infection is sporadic. C. It is a viral infection. D. The side effects of the drug are too great.
All of the following are reabsorbed by the nephron EXCEPT
A. H+ ions. B. Na+ and Cl- ions. C. glucose. D. vitamins. E. water. F. amino acids.
The process of filtration can be a(n)
A. disinfectant method. B. sterilizing method. C. sanitization method. D. antiseptic procedure. E. ineffective method for removing microbes.