What mass of NaCl is contained in 500 mL of a 0.200 mol/L NaCl solution?
A. 11.7 g
B. 5.85 g
C. 75 g
D. 58.5 g
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Which one of the following signs is not right? ( )
A. 1s
B. 3p
C. 4f
D. 2d
Which energy is the highest? ( )
A. 3,2,+1
B. 3,1,0
C. 3,1,-1
D. 4,2,0
Microtubules function in cells
A. as structural supports, maintaining the shape of the cell
B. participate in cell division
C. as a part of the system that causes movement in cilia and flagella
D. all of the above
Proteins are polymers of
A. amino acids
B. carbohydrates
C. nucleic acids
D. lipids
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