Hydrochloric acid in the stomach aids in
a. digestion of fats.
b. digestion of proteins.
c. digestion of carbohydrates.
d. production of leptin.
e. destruction of microbes in food and digestion of proteins.
E
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Which of the following would NOT be an action of the complement system?
a. lysis of a pathogen's membrane b. trapping of pathogens in tangled protein threads c. marking of pathogens for destruction by macrophages d. attraction of phagocytes to the scene of pathogen invasion e. membrane attack complexes
One characteristic of an autosomal dominant trait is that ____
a. 50% of individuals with two affected parents will be affected b. if two affected individuals are homozygous, the risk of having an affected child is 1:4 c. heterozygous fathers will always have affected daughters d. every affected individual has at least one affected parent e. mothers always pass the trait on to their sons
Terrestrial plants obtain carbon dioxide, required for photosynthesis, from the:a
soil. b. roots. c. atmosphere. d. water. e. sun.
Which of the following structures is NOT found in prokaryotic cells?
a. Flagellum b. Axial filament c. Cilium d. Pilus e. Peritrichous flagella