Media used for coliform enumeration include chemicals that change color depending on the enzymes present in the microbes, thereby allowing a count of total bacteria and total coliforms from a single plate. This type of medium is termed ________.
A. defined
B. selective
C. complex
D. differential
Answer: D
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The inability of a man to produce LH would result in
A. the inability of Leydig cells to produce testosterone. B. the inability of the pituitary to produce FSH. C. the loss of positive feedback control on GnRH release. D. the degeneration of the male reproductive tract. E. feminization of the testes.
Births before _____ weeks are considered premature
1.22 2.26 3.37 4.42
What protects mRNA from attack by cellular enzymes?
A) RNA splicing B) the removal of exons C) the lack of RNA-digesting enzymes in the cytoplasm D) a cap and tail
A nosocomial infection is
A) Always present but inapparent at the time of hospitalization. B) Acquired during the course of hospitalization. C) Always caused by medical personnel. D) Only a result of surgery. E) Always caused by pathogenic bacteria.