CCC - Bio c180 Final Exam |! |! |! |! |! |!
Study Guide (Exams 1 & 2) |! |! |! |! |! |!
questions with precise |! |! |!
solutions
What atom forms the backbone of almost all biological molecules?
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a) water
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b) hydrogen
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c) carbon
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d) phosphorous
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e) nitrogen - Correct answer ✔c) carbon
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Each of the following is a function of membranes EXCEPT
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a) defining cell and organelle boundaries
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b) regulation of transport
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c) cell-cell communication
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d) site for specific biological functions
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e) information storage - Correct answer ✔e) information storage
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RNA and DNA differ in that
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a) RNA contains an extra oxygen atom its pentose sugar as compared to DNA
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,b) RNA contains uracil and DNA contains thymine
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c) RNA is typically single-stranded and DNA is double stranded
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d) RNA contains ribose and DNA contains deoxyribose
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e) All of these are correct - Correct answer ✔e) all of these are correct
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The primary structure of a protein
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a) is the linear sequence of amino acids that are linked together by peptide
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bonds
b) dictates how the protein will fold
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c) is important for determining the secondary and tertiary structure of a
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protein
d) is simply the order of amino acids from one end of a protein to another
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e) all of these statements are true - Correct answer ✔e) all of these
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statements are true |! |!
Feedback inhibition prevents cells from |! |! |! |!
a) the harmful effects of enzyme activation by covalent modification of
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unneeded enzymes |!
b) accumulating unnecessary proteins
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c) destroying enzymes when they are needed in biosynthetic pathways
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d) making products that are not needed by inhibiting the activity of enzymes
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in biosynthetic pathways allosterically
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e) irreversibly inhibiting critical enzymes - Correct answer ✔d) making
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products that are not needed by inhibiting the activity of enzymes in
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biosynthetic pathways allosterically |! |!
,Which of the following pairs correctly matches the monomer with its
|! |! |! |! |! |! |! |! |! |! |!
polymer?
a) sugars; fatty acids
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b) fatty acids; lipids
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c) nucleotides; nucleic acids
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d) peptides; proteins
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e) amino acids; polysaccharides - Correct answer ✔c) nucleotides; nucleic
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acids
Which of the following types of work involves a change in position of the cell
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or a cell structure?
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a) mechanical
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b) synthetic
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c) bioluminescent
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d) electrical
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e) concentration - Correct answer ✔a) mechanical
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A peptide bond
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a) is a covalent bond between adjacent glucose molecules in a peptide
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b) is a non covalent bond that dictates the tertiary structure of a protein
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c) is a covalent bond between the functional R groups of adjacent amino
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acids
, d) is a covalent bond between the carboxyl carbon of one amino acid and the
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amino nitrogen of a second amino acid
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e) is a covalent bond between the NH group of one polypeptide and the CO
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group of an adjacent polypeptide that holds together multimeric proteins -
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Correct answer ✔d) is a covalent bond between the carboxyl carbon of one
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amino acid and the amino nitrogen of a second amino acid
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Water moves across the plasma membrane into or out of a cell by osmosis
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when
a) there is a significantly higher concentration of water on one side of the
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membrane
b) it diffuses through the membrane toward a higher solute concentration
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c) it diffuses through the membrane toward a lower solute concentration
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d) there is an equal solute concentration on both sides of the membrane
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e) ATP hydrolysis drives aquaporin activation - Correct answer ✔b) it diffuses
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through the membrane toward a higher solute concentration
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Enzymes belongs to which of the following groups |! |! |! |! |! |! |!
a) lipids
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b) carbohydrates
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c) proteins
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d) amino acids
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e) nucleic acids - Correct answer ✔c) proteins
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Saturation can be defined as |! |! |! |!
Study Guide (Exams 1 & 2) |! |! |! |! |! |!
questions with precise |! |! |!
solutions
What atom forms the backbone of almost all biological molecules?
|! |! |! |! |! |! |! |! |!
a) water
|!
b) hydrogen
|!
c) carbon
|!
d) phosphorous
|! |!
e) nitrogen - Correct answer ✔c) carbon
|! |! |! |! |! |!
Each of the following is a function of membranes EXCEPT
|! |! |! |! |! |! |! |! |! |!
a) defining cell and organelle boundaries
|! |! |! |! |!
b) regulation of transport
|! |! |!
c) cell-cell communication
|! |!
d) site for specific biological functions
|! |! |! |! |!
e) information storage - Correct answer ✔e) information storage
|! |! |! |! |! |! |! |!
RNA and DNA differ in that
|! |! |! |! |!
a) RNA contains an extra oxygen atom its pentose sugar as compared to DNA
|! |! |! |! |! |! |! |! |! |! |! |! |!
,b) RNA contains uracil and DNA contains thymine
|! |! |! |! |! |! |!
c) RNA is typically single-stranded and DNA is double stranded
|! |! |! |! |! |! |! |! |!
d) RNA contains ribose and DNA contains deoxyribose
|! |! |! |! |! |! |!
e) All of these are correct - Correct answer ✔e) all of these are correct
|! |! |! |! |! |! |! |! |! |! |! |! |! |!
The primary structure of a protein
|! |! |! |! |! |!
a) is the linear sequence of amino acids that are linked together by peptide
|! |! |! |! |! |! |! |! |! |! |! |! |! |!
bonds
b) dictates how the protein will fold
|! |! |! |! |! |!
c) is important for determining the secondary and tertiary structure of a
|! |! |! |! |! |! |! |! |! |! |! |!
protein
d) is simply the order of amino acids from one end of a protein to another
|! |! |! |! |! |! |! |! |! |! |! |! |! |! |!
e) all of these statements are true - Correct answer ✔e) all of these
|! |! |! |! |! |! |! |! |! |! |! |! |! |!
statements are true |! |!
Feedback inhibition prevents cells from |! |! |! |!
a) the harmful effects of enzyme activation by covalent modification of
|! |! |! |! |! |! |! |! |! |! |!
unneeded enzymes |!
b) accumulating unnecessary proteins
|! |! |!
c) destroying enzymes when they are needed in biosynthetic pathways
|! |! |! |! |! |! |! |! |!
d) making products that are not needed by inhibiting the activity of enzymes
|! |! |! |! |! |! |! |! |! |! |! |! |!
in biosynthetic pathways allosterically
|! |! |!
e) irreversibly inhibiting critical enzymes - Correct answer ✔d) making
|! |! |! |! |! |! |! |! |! |!
products that are not needed by inhibiting the activity of enzymes in
|! |! |! |! |! |! |! |! |! |! |! |!
biosynthetic pathways allosterically |! |!
,Which of the following pairs correctly matches the monomer with its
|! |! |! |! |! |! |! |! |! |! |!
polymer?
a) sugars; fatty acids
|! |! |!
b) fatty acids; lipids
|! |! |!
c) nucleotides; nucleic acids
|! |! |!
d) peptides; proteins
|! |!
e) amino acids; polysaccharides - Correct answer ✔c) nucleotides; nucleic
|! |! |! |! |! |! |! |! |! |!
acids
Which of the following types of work involves a change in position of the cell
|! |! |! |! |! |! |! |! |! |! |! |! |! |! |!
or a cell structure?
|! |! |! |!
a) mechanical
|!
b) synthetic
|!
c) bioluminescent
|!
d) electrical
|! |!
e) concentration - Correct answer ✔a) mechanical
|! |! |! |! |! |!
A peptide bond
|! |!
a) is a covalent bond between adjacent glucose molecules in a peptide
|! |! |! |! |! |! |! |! |! |! |!
b) is a non covalent bond that dictates the tertiary structure of a protein
|! |! |! |! |! |! |! |! |! |! |! |! |! |!
c) is a covalent bond between the functional R groups of adjacent amino
|! |! |! |! |! |! |! |! |! |! |! |! |!
acids
, d) is a covalent bond between the carboxyl carbon of one amino acid and the
|! |! |! |! |! |! |! |! |! |! |! |! |! |! |!
amino nitrogen of a second amino acid
|! |! |! |! |! |!
e) is a covalent bond between the NH group of one polypeptide and the CO
|! |! |! |! |! |! |! |! |! |! |! |! |! |! |!
group of an adjacent polypeptide that holds together multimeric proteins -
|! |! |! |! |! |! |! |! |! |! |!
Correct answer ✔d) is a covalent bond between the carboxyl carbon of one
|! |! |! |! |! |! |! |! |! |! |! |! |!
amino acid and the amino nitrogen of a second amino acid
|! |! |! |! |! |! |! |! |! |!
Water moves across the plasma membrane into or out of a cell by osmosis
|! |! |! |! |! |! |! |! |! |! |! |! |! |!
when
a) there is a significantly higher concentration of water on one side of the
|! |! |! |! |! |! |! |! |! |! |! |! |! |!
membrane
b) it diffuses through the membrane toward a higher solute concentration
|! |! |! |! |! |! |! |! |! |!
c) it diffuses through the membrane toward a lower solute concentration
|! |! |! |! |! |! |! |! |! |! |!
d) there is an equal solute concentration on both sides of the membrane
|! |! |! |! |! |! |! |! |! |! |! |!
e) ATP hydrolysis drives aquaporin activation - Correct answer ✔b) it diffuses
|! |! |! |! |! |! |! |! |! |! |!
through the membrane toward a higher solute concentration
|! |! |! |! |! |! |! |!
Enzymes belongs to which of the following groups |! |! |! |! |! |! |!
a) lipids
|!
b) carbohydrates
|!
c) proteins
|!
d) amino acids
|! |!
e) nucleic acids - Correct answer ✔c) proteins
|! |! |! |! |! |! |!
Saturation can be defined as |! |! |! |!
