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College Macromolecules Questions

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College Macromolecules
College Macromolecules
What is the most common element in the human body by mass?
  1. Calcium
  2. hydrogen
  3. carbon
  4. oxygen
  5. nitrogen
College Macromolecules
What is a(n) example of carbohydrate?
  1. Sugar
  2. Starch
  3. Both sugar and starch
  4. Neither sugar and starch
College Macromolecules
College Macromolecules
What forms the sugar/phosphate backbone of each strand of DNA?
  1. Phosphodiester covalent bonds
  2. Hydroxyldiester covalent bonds
  3. Manganesdiester covalent bonds
  4. Carbodiester covalent bonds
College Macromolecules
College Macromolecules
Organic Molecules contain which two elements?
  1. Carbon and Hydrogen
  2. Oxygen and Hydrogen
  3. Oxygen and Carbon
  4. Nitrogen and Oxygen
College Macromolecules
College Macromolecules
Which of the following categories includes all others in the list?
  1. monosaccharides
  2. polysaccharides
  3. starch
  4. carbohydrate
College Macromolecules
Which of the following determines the chemical reactivity of biological molecules?
  1. functional groups
  2. isomers
  3. number of carbon atoms
  4. length the hydrocarbon chain
College Macromolecules
College Macromolecules
Which action could produce a carbonyl group?
  1. the replacement of the --OH of a carboxyl group with hydrogen
  2. the addition of a thiol to a hydroxyl
  3. the addition of a hydroxyl to a phophate
  4. the replacement of the nitrogen of an anime with oxygen
College Macromolecules
Why is ATP and important molecule in metabolism?
  1. Its hydrolysis provides an input of free energy for exergonic reactions
  2. It provides energy coupling between endergonic and exergonic reactions
  3. It's terminal phosphate group contains a strong ionic bond that when hydrolyzed releases free energy
  4. It's terminal phosphate bond has higher energy and the other two
  5. It is one of the four for DNA synthesis
College Macromolecules
Cortisol is an example of                .
  1. Carbohydrate
  2. Lipids
  3. Protein
  4. Nucleic Acids
College Macromolecules
Which of these can denature a protein?
  1. Heat
  2. changes in pH
  3. high salt concentration
  4. all of the above
College Macromolecules
Enzymes                       chemical reactions in living systems by                      the activation energy.
  1. slow down, decreasing
  2. slow down, increasing
  3. speed up, decreasing
  4. speed up, increasing
  5. stop, eliminating
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