Human cells require __________ vitamins at a
minimum.
a. 5
b. 8
c. 10
d. 13
e. 20
Answer: d
Biology & Microbiology
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The movement of carbon from CO2 in the atmosphere to HCO3 - (a byproduct of chemical weathering) on rocks to CaCO3 in coral skeletons and finally CaCO3 in limestone are all steps in the _____________
A. short-term carbon cycle B. nitrogen cycle C. sulfur cycle D. long-term carbon cycle
Biology & Microbiology
The male part of a flower is the ____
a. carpel b. stamen c. petal d. sepal e. receptacle
Biology & Microbiology
Hydrogenation is a chemical process that
a. turns liquid oil to solid fats. b. turns amino acids into proteins. c. turns DNA into lipids. d. creates stable alternative energy sources. e. does none of these
Biology & Microbiology
Schizophrenia has been shown to be a single gene disorder. Indicate whether the statement is true or false
Biology & Microbiology