Which of the following STDs can infect the nervous system?
A) gonorrhea B) syphilis C) chlamydia D) HPV infection
Answer: A
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Two reasons for two selectable markers in a YAC vector are:
A. to insure the EcoRI digest is complete. B. to insure the desired recombinant construct has telomeres on both ends. C. to contribute to the centromere structure. D. to increase transformation efficiency. E. to eliminate the possibility of screening unstable recombinants.
Which of the following is not true of the second step of translational elongation in bacteria?
A. The carboxyl group oxygen of the A-site amino acid is the nucleophile in peptide bond formation. B. A peptide bond is formed between the two amino acids bound by the tRNAs in the A and Psites. C. The growing polypeptide chain is transferred to the tRNA in the A site. D. The ?-amino group of the A-site amino acid attacks the carbonyl carbon of the P-site amino acid.
The drug Humulin is a modified form of the human insulin protein that is used to treat diabetes
Describe the process that would allow a drug company to take the gene responsible for producing this protein and, using bacteria, produce large amounts of this human protein.
Will stain bacteria:
a) Gram b) Giemsa c) both d) neither