Which of the following techniques is the best choice for amplifying DNA?
A) Southern blot analysis
B) PCR
C) DNA sequencing
D) Affinity chromatography
E) Microarray analysis
B
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Isoniazid is a narrow-spectrum antibiotic that
A. is one of the few drugs effective against Mycobacterium tuberculosis. B. is one of the few drugs effective against systemic fungal infections. C. is not useful as a chemotherapeutic agent. D. None of the choices are correct.
Bacteria have 80S ribosomes each composed of a 60S large subunit and a 40s small subunit.
a. true b. false
A chemical agent that dissolves lipids can damage
A. cells. B. bacterial endospores. C. enveloped viruses. D. non-enveloped and enveloped viruses. E. cells and enveloped viruses.
The percent of whole blood composed of erythrocytes is known as __________________.
Fill in the blank(s) with the appropriate word(s).