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

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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.

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Ecosystems may lose nitrogen through

a. denitrification. b. nitrification. c. nitrogen fixation. d. all of these. e. none of these

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Korarchaeum cryptofilum's lifestyle is based on

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