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Water, pH and Macromolecules

Water, pH and Macromolecules
H2O and CH4 are both examples of

acids
ions
molecules
none of these

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Water, pH and Macromolecules
What is the concentration, in moles/liter, of the hydrogen ion, if pH of a solution is 7?

7 x 10-7
1 x 10-7
7
5 x 10-7

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Water, pH and Macromolecules
A biological polymer contains alanine, tyrosine, and lysine. Which of the following will be true about this molecule?

Strong base
Protein
DNA
Phospholipid

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Water, pH and Macromolecules
Which of the following alcohols would be most soluble in water?

methanol
octanol
butanol
ethanol

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Water, pH and Macromolecules
The elements oxygen, nitrogen, and carbon

contain protons and neutrons in their atomic nuclei
All of these
can all form covalent bonds with other elements
are common elements in the molecules that make up living organisms

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Water, pH and Macromolecules
Which of the following organic groups are found in naturally occuring amino acids?

Indole
Guanidinium ion
Imidazole
All of these

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