CHEM210- BIOCHEMISTRY EXAM QUESTIONS AND ANSWERS WITH DETAILED SOLUTIONS VERIFIED

CHEM210- BIOCHEMISTRY EXAM QUESTIONS AND ANSWERS WITH DETAILED SOLUTIONS VERIFIED Practice questions for this set Terms in this set (58) What are three ways that biochemists study biological organisms? among-the relationship between structure and function of biomolecules -chemical reactions of organisms (metabolism) -communication with and among organisms What is biochemistry? the chemistry of life Molecular arrangements linear= 180 degrees trigonal planar= 120 degrees trigonal pyramidal= 107.5 degrees tetrahedral= 109.5 degrees bent= 104.5 degrees How many of the 90 naturally occurring elements are found in living organisms? less than 30 (small nonmetal in upper right of the table) smaller vs larger element bonds smaller elements are favored because they can form stable covalent bonds (strong), the larger elements do not form stable covalent bonds What elements is critical to all living things and is found in large amounts? Carbon Organic vs inorganic chemistry organic-study of carbon based compounds, inorganic- study of compounds typically not containing carbon Carbon -has 4 valence electron permitting it to form 4 bonds -forms long chains -forms double and triple bonds -forms ring compounds (cyclic compounds) forms bonds w many other atoms including H, N, and O Alkanes Straight chain compounds with only carbon and hydrogen chemical and compounds formulas of the methane= CH4, CH4 ethane= C2H6, CH3CH3 propane= C3H8, CH3CH2CH3 butane= C4H10, CH3CH2CH2CH3 pentane=C5H12, CH3CH2CH2CH2CH3 hexane=C6H14, CH3CH2CH2CH2CH2CH3 heptane=C7H16, CH3CH2CH2CH2CH2CH2CH3 *starting from CH4 add one carbon and two hydrogens in the chemical formula and add one CH2 in each with CH3 on both ends Four ways to draw organic molecules chemical formula, condensed formula, Kekule formula, and line bond formula Functional group Specific arrangement of atoms in a compound that define the chemistry of the molecule and control the properties of the compound Alkene carbon-carbon double bond Alkyne carbon-carbon triple bond