The lungs lie within the ___ cavity
a. thoracic
b. abdominal
c. pelvic
d. cranial
e. spinal
A
Biology & Microbiology
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Which one of the following is not a component of an amino acid?
A. an alpha carbon B. an amino group C. a carboxyl group D. an R group E. a phosphate group
Biology & Microbiology
Which one of the following is a monosaccharide and not a disaccharide?
A. lactose B. fructose C. sucrose D. maltose E. None of these sugars is a monosaccharide.
Biology & Microbiology
Ecosystems may lose nitrogen through
a. denitrification. b. nitrification. c. nitrogen fixation. d. all of these. e. none of these
Biology & Microbiology
Korarchaeum cryptofilum's lifestyle is based on
a. aerobic respiration. b. anaerobic respiration. c. fermentation. d. photosynthesis.
Biology & Microbiology