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None Chemistry Questions

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None Biochemical Pathways
None Bonds and Mixing
None Acids and Bases
Which of the following is most acidic?
  1. Pure water
  2. Urine (pH 6)
  3. milk of magnesia (pH 10.5)
  4. Household bleach (13)
None Macromolecules
Protein molecules are polymers of                     .
  1. DNA molecules
  2. fatty acid molecules
  3. amino acid molecules
  4. none of the above
None Macromolecules
Cellulose is made up of many                  .
  1. monomers
  2. glucose molecules
  3. fatty acids
  4. amino acids
None Macromolecules
None Macromolecules
Which of these is found in all amino acids?
  1. -COOH
  2. -OH
  3. -NH2
  4. Both A and C
None Macromolecules
The peptide bond is                                                                    .
  1. a hydrogen bond joining amino acids together to form a polypeptide
  2. a covalent bond joining simple sugars together to form a polypeptide
  3. a covalent bond joining amino acids together to form a polypeptide
  4. a hydrogen bond joining nucleotides together to form a nucleic acid
None Macromolecules
High cholesterol levels are considered a major risk factor for heart disease. However, why is cholesterol still necessary?
  1. It isn't. humans have evolved to no longer need it
  2. it is an important part of nucleotides
  3. it is the basis for many important molecules such as hormones
  4. aids in the formation of amino acids
None Macromolecules
Which of the following is untrue about unsaturated fatty acids?
  1. most animal fats are saturated
  2. there are no double bonds between carbon atoms composing a chain so as many hydrogen bonds as possible can bond
  3. has one or more double bonds with one fewer hydrogen atom on each
  4. None of the above
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