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MICR 2330 Chapter 3
Terms in this set (20)
Differentiate between an atom, a molecule, and a compound.
Why is water a good solvent?
Which solution is more acidic, one with a pH of 4 or one with a pH of 5? What is the concentration of H+ ions in each?
What is the significance of cellulose?
Show how dehydration synthesis and hydrolysis reactions are related, using an example of each.
What is a structural isomer?
Name the major groups of lipids and give an example of each. What feature is common to all lipids?
List six functions of proteins.
What are the four levels of protein structure, and what is the distinguishing feature of each?
How do DNA and RNA differ from one another in composition and function?
Choose the list that goes from the lightest to the heaviest:
a) proton, atom, molecule, electron.
b) atom, proton, molecule, electron.
c) electron, proton, atom, molecule.
d) atom, electron, proton, molecule.
e) proton, atom, electron, molecule.
An oxygen atom has an atomic number of 8. It typically forms
a) no covalent bonds because it contains 8 electrons.
b) two covalent bonds because it contains 6 electrons in its valence shell.
c) weak hydrogen bonds with two hydrogen atoms to form a water molecule.
d) one covalent bond with a carbon atom to form carbon dioxide.
e) ionic bonds with another oxygen atom.
Dehydration synthesis is involved in the synthesis of all of the following except
The primary structure of a protein relates to its
a) sequence of amino acids.
e) bonds between amino acids.
Pure water has all of the following properties except
b) ability to dissolve lipids.
c) pH of 7.
d) covalent joining of its atoms.
e) ability to form hydrogen bonds.
When the pH of a solution changes from 3 to 8, the H+ concentration a) decreases as the solution becomes more basic.
b) decreases as the solution becomes more acidic.
c) increases as the solution becomes more acidic.
d) increases as the solution becomes more basic.
e) does not change as the solution becomes more basic.
A shortage of nitrogen (N) would make it most difficult to construct a molecule of
c) an enzyme.
d) a triglyceride.
Complementarity plays a major role in the structure of
A bilayer is associated with
d) complex polysaccharides.
The function of a buffer is to
a) bring the pH of a solution to neutral.
b) speed up chemical reactions within a cell.
c) interact with phospholipid molecules to form a cell membrane.
d) stabilize the pH of a solution.
e) provide energy for synthesis of ATP
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