A phenotypic technique that examines an organism's susceptibility to bacterial peptides (proteins) is:
a. biotyping.
b. antibiograms.
c. serotyping.
d. bacteriocin typing.
D
Classic phenotypic techniques include biotyping (analyzing unique biologic or biochemical cha-racteristics), antibiograms (analyzing antimicrobial susceptibility patterns), and serotyping (se-rologic typing of bacterial or viral antigens, such as bacterial cell wall [O] antigens). Bacteriocin typing, which examines an organism's susceptibility to bacterial peptides (proteins), and bacte-riophage typing, which examines the ability of bacteriophages (viruses capable of infecting and lysing bacterial cells) to attack certain strains, have been useful for typing P. aeruginosa and S. aureus, respectively. These techniques, however, are not widely available.
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Most of the significant changes in activities and functions that accompany passage through a cell cycle checkpoint are regulated by the:
A. activation of microtubules. B. changes in membrane polarization. C. activation of kinase enzymes. D. activation of DNA polymerase. E. inhibition of cyclin proteins.
The spindle attaches to chromosomes at the _____
a. centriole b. contractile ring c. centromere d. centrosome e. telomere
Describe the pathway of sperm during ejaculation, from production to exiting the body. Include the contributions of various accessory ducts and glands
What will be an ideal response?
Which of the following synthesis short segments of RNA?
A) helicase B) DNA polymerase III C) ligase D) DNA polymerase I E) primase