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None Chemistry Questions

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None Bonds and Mixing
None Macromolecules
An enzyme speeds up a reaction by                                
  1. lowering the activation energy.
  2. raising the activation energy.
  3. releasing energy.
  4. absorbing energy.
None Solvents, Solutes, and Solubility
Which of the following is responsible for water's high specific heat and cohesion ability?
  1. hydrogen bonds
  2. evaporative cooling
  3. molarity
  4. Van der Waals Interactions
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
Cellulose is made up of many                  .
  1. monomers
  2. glucose molecules
  3. fatty acids
  4. amino acids
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
Which of these lists shows the relative size of macromolecules, from largest to smallest?
  1. water, sucrose, glucose, protein
  2. protein, water, glucose, sucrose
  3. water, protein, sucrose, glucose
  4. protein, sucrose, glucose, water
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
None Macromolecules
Which of these is found in all amino acids?
  1. -COOH
  2. -OH
  3. -NH2
  4. Both A and C
None Macromolecules
Proteins are polymers formed from                
  1. lipids.
  2. carbohydrates.
  3. amino acids.
  4. nucleic acids.
None Biochemical Pathways
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