Biomolecules and the Chemistry of Life True or False

1.	An element’s atomic number tells you -> how many neutrons are contained in the nucleus. True False
2.	Lithium is a relatively small atom; its atomic number is 3, and it has three electrons. Two of those electrons are in the first electron shell, which holds a maximum of two electrons, and the last electron is alone in the next shell, which can hold a maximum of eight electrons. If lithium becomes an ion, it is most likely to become -> Li⁺. True False
3.	When two or more atoms bind by sharing electrons equally, we call it a(n) -> nonpolar covalent bond. True False
4.	Water is a good solvent because -> of options 1, 2, and 3. True False
5.	Usually, the solid phase of a substance is ______ dense than the liquid phase. Water is _______ dense than ice. -> more; less True False
6.	Carbon is the basis for life forms on Earth because -> it can form four bonds, thereby giving rise to a diverse array of molecules. True False
7.	Starch is a(n) _______ storage polysaccharide and is ___________, whereas glycogen is a(n) _______ storage polysaccharide and is ___________. -> animal; branched; plant; branched or unbranched True False
8.	All lipids have the following trait(s) in common: -> both options 1 and 2. True False
9.	The quaternary structure of a protein is -> a string of amino acids forming a polypeptide chain. True False
10.	Nucleotides are made up of -> options 1, 2, and 3. True False

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