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8)What additional bond could be formed by the oxygshowing page 1-7 out of 7

8) What additional bond could be formed by the oxygen
in the red circle below? What level of protein structure
would this bond be associated with?
1. Peptide;
secondary
2.
Hydrogen;
secondary
3.
Peptide; tertiary
4.
Hydrogen; tertiary
25)Which of the following interactions can occur
between two positively charged amino acids?
1.
hydrogen bond
2.
hydrophobic interaction
3.
disulfide bond
4. ionic
bond
5.
none
of
these
29)Diabetic ketoacidosis can lower blood pH, which affects
the structure of important proteins like hemoglobin. Which of
the following bonds are most likely affected by the change in
pH?
1.
a
2.
b
3. c
4. d
22)The negatively charged amino acid, Glu, is replaced with
the negatively charged amino acid Asp. Which level of
protein structure is likely to be impacted by this change?
1.
primary
structure
2.
secondary structure
3.
tertiary structure
4.
quaternary structure
36)Alzheimer’s disease is caused by aggregation of the
Amyloid beta peptide and tangle formation by the tau
protein. What kinds of amino acids are likely to drive the
formation of these protein aggregates?
1.
Hydrophobic
2. Hydrophilic
3. Polar
4. Cysteine
6) In the following picture, two amino acids are joined
together as a dipeptide. Does a dehydration synthesis or a
hydrolysis reaction occur
when the peptide bond (indicated by the arrow) forms
between the two amino acids? Is water added or removed
when this bond forms?
1.
dehydration; added
2. hydrolysis;
removed
3.
dehydration;
removed
4. hydrolysis; added
40)This amino acid is polar.
1.
True
2. False
15)Interaction between the two amino acids shown below
can help stabilize the structure of a protein. What kind of
interaction is this?
1.
Ionic
bond
2.
Hydrogen bond
3.
Disulfide bond
4.
Hydrophobic interaction
38)What category does this amino acid belong to?
1. Polar
2.
Charged
3. Nonpolar
14)What kind (class) of amino acid is shown below?
1. Equatorial
2.
Non-polar
(hydrophobic)
3.
Polar (hydrophilic)
4. Charged
13) Which amino acid would most likely be found on the
interior of a protein?
Option 1
Option
2
Option 3
Option 4
1) Choose the answer that correctly labels the amino
group, the carboxyl group, and the variable group on
the amino acid below:
1.
option 1) A-carboxyl group, B-variable group, D-
amino group
2.
option
2)
A-variable
group,
B-amino
group,
C-carboxyl
group
3. option 3) A-amino group, B-carboxyl group, D-variable group
9) What type of interaction could be formed by the -CH3
group boxed in the diagram below? What level of protein
structure would this interaction be associated with?
1.
Hydrophobic;
tertiary
2.
Hydrogen; secondary
3.
Ionic; tertiary