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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 when -> electrons are gained or lost from an atom.
3. Hydrogen bonds differ from ionic bonds in that -> ionic 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 because -> they are nonpolar so water isn’t attracted to them and, therefore, doesn’t pull them apart.
6. Dehydration synthesis joins monomers into polymers for -> carbohydrates.
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 that -> saturated 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 because -> all the bonds between nucleotides are double bonds.