Lipopolysaccharide (LPS) in the outer membrane of Gram-negative bacterial cells is an example of

A) An endotoxin
B) An exotoxin
C) A cytokine
D) An endonuclease


Ans: A) An endotoxin

Biology & Microbiology

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a. 10% b. 20% c. 30% d. 50% e. 100%

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Most cases of pharyngitis are caused by Group A ß-hemolytic streptococci

Indicate whether the statement is true or false

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What would happen to a person who was poisoned with a chemical that blocks the production of neurotransmitters at neuromuscular junctions?

A) The muscles would be unable to contract. B) The person's muscles would contract uncontrollably. C) The sarcoplasmic reticulum would release sodium ions instead of calcium ions. D) The muscles would swell.

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