Eukaryotic polymerases interact with which protein that acts as the sliding clamp in eukaryotic DNA replication?
What will be an ideal response?
PCNA
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Which of the following organisms may grow at pH 3.5?
A. Clostridium B. Streptococcus C. fungi D. lactic acid bacteria E. fungi AND lactic acid bacteria
Infections by Helicobacter pylori cause 90% of peptic ulcers in the United States. These bacteria have pili that are only expressed in acidic conditions. A characteristic of this organism should be an ability to
A. avoid ingestion by cells in the immune system. B. enter the bloodstream. C. attach to cells in the host organism's stomach. D. induce a large antibody response. E. move in the direction opposite the pili.
Divergent plate boundaries are located at:
1.trenches 2.transform faults 3.mid-ocean ridges 4.none of these
E. coli, a protozoan that ranges from 15 to 25 µm in diameter, can contain up to eight nuclei in mature cysts. How would the karyosome expect to appear on a stained slide?
a. Small, usually compact b. Large, usually compact c. Small, irregularly shaped d. Large, not compact