Biochemistry 2 Review: Question Preview (ID: 20349)


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In the Penny Experiment the soapy penny had weaker ______________ because the ______________ between the water molecules was reduced by the ____________ soap which broke the hydrogen bonds.
a) surface tension; cohesion; nonpolar b) surface tension; cohesion; polar c) surface tension; adhesion; nonpolar d) cohesion; surface tension; polar
In the Penny Experiment students tested the cohesion of water molecules placed on a penny which was coated in various solutions. The independent variable in this experiment was
a) the solution. b) the number of water drops. c) the side of the penny. d) the size of the coin.
In the Penny Experiment students tested the cohesion of water molecules placed on a penny which was coated in various solutions. The dependent variable in this experiment was
a) the solution. b) the number of water drops. c) the side of the coin. d) the size of the coin.
Which of the following makes up cellulose in plants?
a) amino acids b) polysaccharides c) nucleic acids d) phospholipids
Which of the following is a function of protein?
a) translating the genetic code b) signaling and transporting molecules c) composing the lipid bilayer d) providing energy to drive metabolic reactions
DNA and RNA are made up of nucleotides, which contain
a) a sugar, a nitrogen base and a phosphate group. b) a sugar, an acid and a phosphate group. c) ATP, a base and a phosphate group. d) amino acids.
Which of the following are unsaturated fatty acids?
a) lard, bacon grease b) wax, cholesterol c) olive oil, fish oil d) butter, hydrogenated vegetable oil
Which category of organic compounds contains the template for genetically acquired traits?
a) carbohydrates b) lipids c) proteins d) nucleic acids
Which of the following makes up the bilayer in cell membranes?
a) DNA b) polysaccharides c) phospholipids d) amino acids
Unlike saturated fatty acids, unsaturated fatty acids contain what kind of bonds between carbon atoms?
a) ionic b) hydrogen c) double d) single
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