Which of the following is the endotoxin?

A. Hyaluronidase
B. Streptokinase
C. Lipopolysaccharide
D. Collagenase
E. Hemolysin


Answer: C

Biology & Microbiology

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Primates, as well as dogs, sheep, and horses, have died of central nervous system (CNS) infections with which organism?

a. N. fowleri b. Acanthamoeba spp. c. Toxoplasma gondii d. Balamuthia mandrillaris

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Which of the following lack a “true” coelom?

a. flatworms b. annelids c. roundworms d. flatworms and roundworms e. flatworms and annelids

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Results of an ABO blood typing indicate agglutination reactions when anti-A and anti-B are added to the blood sample. The blood type of the individual would therefore be

A) A. B) B. C) O. D) AB. E) Not enough information given to determine blood type.

Biology & Microbiology

In the establishment of rhizobia in a legume, infection threads are found in the:a

stele. b. cortex. c. root hairs. d. xylem. e. phloem.

Biology & Microbiology