Instructions

The lower the pH of a solution, the A) the more basic the solution A) a decrease in blood pH B) more acidic the solution B) a decrease in air temperature R 35) What name is given to substances that resist changes in pH? buffers B) solutions C) acids Answer: A D) bases 36) When a base is added to a buffered solution, the buffer will AY donate OH- B) accept water molecules D) form covalent bonds with the base C) donate H+ ions 37) What is the outcome of evaporative cooling in the form of sweating? A) a decrease in blood pH B) a decrease in air temperature a decrease in body temperature 38) The following molecule is best described as a CH3-CH2-CH2-CH2 A) protein B) carbohydrate D) nucleic acid E) lipid hydrocarbon 39) is a hydroxyl group. A) -SH B) -NH2 C) -OH D-COOH E)-H 40) is a carboxyl group. A)-SH B)-NH2 C)-OH D )-COOH -CO 41) is a carbonyl group. A)-SH B-NH2 C)-OH D)-COOH E) – CO 42) If one strand of a DNA double helix has the sequence AGTACTG, what will be the sequence of the other strand? A) GACGTCA B CTACAGTC) AGTACTG D) GTCATGA TCATGAC 43) What is the name given to the reaction that builds molecules? A) dehydration hydrogenation C) hydrolysis D) glycolysis 41) is a Amino group. A) -SH B)-NH2 C)-OHD) -COOH E-co 45) What is the name given to the reaction that breaks molecules? Adehydration B) hydrogenation C) hydrolysis D) glycolysis 46) Nucleic acids are polymers of_ A) monosaccharide monomers. B) fatty acid C) DNA nucleotide

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