A bacterial toxin that is not ordinarily releases but instead is an integral part of gram-negative cell walls is called a(n)______

a. endotoxin
b. toxoid
c. exoenzyme
d. exotoxin
e. enterotoxins


a. endotoxin

Biology & Microbiology

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You arrive late to a biological seminar. However, just as you enter the room, you hear the speaker referring to the "amino end" and the "carboxyl end" of a macromolecule. Immediately, you know that they are talking about a:

A. carbohydrate. B. protein. C. lipid. D. DNA.

Biology & Microbiology

Extrachromasomal DNA is found in ____________________________

A. mitochondria B. plasmids C. nucleoid D. nucleoli E. mitochondria AND plasmids

Biology & Microbiology

Most traits are influenced by only one locus

Indicate whether the statement is true or false

Biology & Microbiology

Which of the following methods is categorized as a direct test in order to analyze a specimen?

A.) catalase test B.) Gram stain C.) phage typing D.) antimicrobic sensitivity E.) production of gas

Biology & Microbiology