Which of the following molecular techniques, or combination of techniques, would be most appropriate for detection and quantitation of an RNA retrovirus, like HIV, in a blood sample in order to establish the patient's viral load?
a. RT-PCR
b. Real-time PCR
c. Real-time RT-PCR
d. Multiplex PCR
C
The combination of real-time, or quantitative, detection methods with RT-PCR would allow for quantitative determination of a viral RNA transcript.
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The most common type of infection caused by both R. radiobacter and Ochrobactrum anthropi is:
a. peritonitis. b. endocarditis. c. meningitis. d. bacteremia.
Within the fluid mosaic of a plasma membrane, what is the role of transport and channel proteins?
A) They identify the cell. B) They may set off cellular changes such as cell division or hormone secretion. C) They prevent the passage of amino acids. D) They are cell-surface connection sites. E) They permit ions and water molecules to move through the plasma membrane.
The emergency contraceptive pill (morning after pill) is most effective when taken __________.
A. Immediately after intercourse B. Up to three days after intercourse C. Within a week of intercourse D. Daily E. Once a week
The type of cell-cell attachment that resembles quilting, with proteins acting as stitches, is _____.
-gap junctions -tight junctions -desmosomes -selective adhesions