Which of the following is/are used to detect chlamydiae in tissues and cell scrapings?
A. PCR methods
B. Immunofluorescence
C. Microscopy of Giemsa stained samples
D. All of the choices are correct.
Answer: D
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A virus that kills its host is said to be
A) lytic or virulent. B) temperate. C) lysogenic. D) virulent or lysogenic, but not temperate.
The ability of the DNA polymerase to remove mismatched bases is called exonuclease cleavage (proofreading)
Indicate whether the statement is true or false
In the stomach, food processing continues and secretions from stomach glands aid the initial digestion of
A. carbohydrates. B. lipids. C. nucleic acids. D. proteins. E. vitamins.
Due to biological magnification, which of the
following have the highest concentration of a chemical herbicide?
a. grass- the dominant primary producer b. cow- an herbivore c. grasshoppers - an herbivore d. mice - predators of butterflies e. hawk - predators of mice