A nitrogen atom and an oxygen atom combine chemically to form nitric oxide. What is nitric oxide?
O A. An element
O B. A mixture
O
C. An atomy
O D. A molecule
SUBNI

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In 2002, the rare earth elements mine in mountain pass, california was closed because

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion