A patient develops a high fever due to a Gram-negative pathogen.  Which of the following is a certain mediator of illness in this case?

A. Exotoxin 
B. Endotoxin
C. Both endotoxin and exotoxin
D. Neither endotoxin nor exotoxin


Answer: B

Biology & Microbiology

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Most tunicate adults are

a. herbivores. b. photoautotrophs. c. carnivores. d. scavengers. e. filter feeders

Biology & Microbiology

Refer to the accompanying figure. What is the structure labeled as 9?


a. foot
b. gills
c. heart
d. siphons
e. digestive tract

Biology & Microbiology

Which process accounts for the movement of solid particles (such as food) into some animal cells?

A) Phagocytosis B) Osmosis C) Active transport D) Facilitated diffusion E) Simple diffusion

Biology & Microbiology

Microbial enzymes are used

A. in the production of linen. B. as preservatives. C. in spot removers. D. as a component of fabric dyes. E. to biodegrade plastics.

Biology & Microbiology