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College Chemistry Questions

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College Bonds and Mixing
In what way are ionic bonds different from covalent bonds?
  1. Ionic bonds are stronger than covalent bonds
  2. Ionic bonds are made between atoms with full outer electron shells and covalent bonds are made between atoms with unfilled outer shells
  3. Ionic bonds result from the give and take of electrons between atoms while covalent bonds result from the sharing of electrons.
  4. Ionic bonds result from the attraction between the protons of different atoms while covalent bonds result from the attraction between the electrons of different atoms.
  5. none of the above
College Acids and Bases
If the pH of a solution is decreased from 9 to 8, it means that the
  1. concentration of H+ has decreased by a factor of 10
  2. concentration of H+ has increased tenfold
  3. concentration of OH- has increased tenfold
  4. concentration of OH- has decreased by a factor of 10
  5. concentration of H+ has increased by a factor of 100
College Biochemical Pathways
What is the primary function of the Calvin cycle?
  1. use ATP to release carbon dioxide
  2. use NADPH to release carbon dioxide
  3. synthesize simple sugars from carbon dioxide
  4. transport RuBP out of the chloroplast
  5. split water and release oxygen
College Chemistry
College Organic Chemistry
The branch of science that applies to substances that contain carbon is:
  1. inorganic chemistry
  2. organic chemistry
  3. matter chemistry
  4. structural chemistry
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 Oxidation-Reduction Reactions
What is oxidation?
  1. Loss of electrons
  2. Loss of hydrogen
  3. Gain of hydrogen
  4. Gain of electrons
College Biochemical Pathways
College Macromolecules
College Properties of Matter
College Biochemical Pathways
What are the products of the Kreb's cycle?
  1. Pyruvate
  2. FADH2
  3. NADH
  4. CO2
  5. B, C, and D
College Biochemical Pathways
Where does the Calvin cycle take place?
  1. cytoplasm surrounding the chloroplast
  2. thylakoid membrane
  3. outer membrane of the chloroplast
  4. chlorophyll molecule
  5. stroma of the chloroplast
College Bonds and Mixing
Under what conditions will an atom be least likely to form chemical bonds with other atoms?
  1. when the number of protons equals the number of neutrons.
  2. when the outer electron shell has one fewer electron than the maximum amount it can hold.
  3. when the number of protons equals the number of electrons.
  4. when there is only one electron in the outer electron shell.
  5. when the outer electron shell is full of electrons.
College Periodic Table and Elements
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
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 Biochemical Pathways
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