Enterotoxins affect cells in the:

A) respiratory tract.
B) genitourinary tract.
C) gastrointestinal tract.
D) central nervous system.


C) gastrointestinal tract.

Biology & Microbiology

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In the stomach, food processing continues and secretions from stomach glands aid the initial digestion of

A. carbohydrates. B. lipids. C. nucleic acids. D. proteins. E. vitamins.

Biology & Microbiology

In _____ blood flows through two completely separate circuits

a. birds c. fish b. mammals d. both birds and mammals

Biology & Microbiology

Which organisms represent the common ancestor of all photosynthetic plastids found in eukaryotes?

A) autotrophic euglenids B) diatoms C) dinoflagellates D) red algae E) cyanobacteria

Biology & Microbiology

Large carbohydrates, such as starch and glycogen, are polymers. What monomers compose large carbohydrates?

A. Fatty acids B. Nucleotides C. Monosaccharides D. Amino acids

Biology & Microbiology