All of the following are gram-negative rods that cause gastroenteritis EXCEPT
A) Clostridium perfringens.
B) Escherichia coli.
C) Salmonella typhi.
D) Shigella spp.
E) Yersinia enterocolitica.
A
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Once a putative pure culture has been obtained from the environment, it is no longer necessary to check its purity
Indicate whether the statement is true or false.
Tendons connect
(a) bones to bones. (b) skeletal muscles to bones. (c) ligaments to bones. (d) skeletal muscles to tendons.
How do insulin and glucagon interact to maintain normal blood sugar levels?
What will be an ideal response?
A culture medium consisting of agar, peptone, and beef heart, which are substances in which the amount of ingredients are unspecified, is a
a. chemically defined medium. b. complex medium. c. selective medium. d. differential medium. e. reducing medium.