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Biomolecules and the Chemistry of Life

Biomolecules and the Chemistry of Life

Biomolecules and the Chemistry of Life: All Buffered Out True or False

1. An atom is the smallest unit of a(n) ___________ and a molecule is the smallest unit of a(n) _____________.element; compound
2. Ions form whenelectrons are gained or lost from an atom.
3. Hydrogen bonds differ from ionic bonds in thationic bonds lead to polar molecules, and hydrogen bonds do not.
4. A food with a pH of 3 is ________ times more __________ than a food with a pH of 8.50; acidic
5. Hydrophobic substances do not dissolve in water becausethey are nonpolar so water isn’t attracted to them and, therefore, doesn’t pull them apart.
6. Dehydration synthesis joins monomers into polymers forcarbohydrates.
7. Which of the following are sources of diversity in carbohydrates?Options 1, 2, and 3
8. The difference between saturated fatty acids and unsaturated fatty acids is thatsaturated fatty acids are used for energy storage, and unsaturated fatty acids are hormones.
9. Which of the following statements about amino acids is NOT true?The properties of amino acids affect the structure and function of proteins.
10. DNA is called a double helix becauseall the bonds between nucleotides are double bonds.

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