The sequence of monomers in any polymer is this type of structure
primary structure
Amino acid chains capable of forming hydrogen bonds are usually located on the protein ___ and form hydrogen bonds primarily with the _____
surface, water solvent
Which of the peptides would absorb light at 280 nm?
Ala-Ala-Trp
Chymotrypsin digestion yields a dipeptide and tetrapeptide
Lys-Met-Cys-Phe-Ala-Trp
Hemoglobin is an example of a ___ protein
transport
Tertiary structure is primarily defined as
the folding of a single polypeptide chain in three-dimensional space
In proteins, hydrogen bond donors DO NOT include:
Gly
In the Beta-sheet conformation:
all of these
Disulfide bonds are most important in this type of structure:
tertiary structure
Fibrous proteins
are both beta sheets and alpha helices
The tertiary structure of a protein is usually a result of which of the following:
all of these
Which of the following characteristics is consistent with the description of a fibrous protein, but not a globular protein?
water insoluble
The peptide bond has partial ____ character.
double bond
Proteins with two different polypeptide chains are:
heterodimeric proteins
A common reaction of two cysteine residues in proteins results in the formation of ____.
disulfide bonds
The C-terminal residue of a polypeptide can be determined by first cleaving the polypeptide with:
carboxypeptidase
A hydrophobic interaction might occur within a protein between which of the following amino acid pairs?
Val/Leu
Secondary and higher orders of structure are determined by all EXCEPT:
peptide bonds
Alpha helices are stabilized primarily by:
hydrogen bonds between the main chain peptide bond component atoms
Antiparallel β-sheets have:
usually all of their hydrophobic residues on one side of the sheet.
The structure of myoglobin consists
almost entirely of α -helices
Fibrous proteins, such as collagen, have which one of the following properties?
Serve structural roles in the cell.
A major stabilizing factor in the triple helix is a ____ structure such that ____ residues from the three strands stack along the center of the triple helix.
staggered, gly
A glycosidic bond would be present in:
methyl-α-D-glucoside.
cellulose is homopolysaccharide composed of ______ linked together by ______ glycosidic bonds.
glucose; β-(1→4)
All are true for cellulose and α-amylose EXCEPT:
Both form extended ribbon most stable conformations
Amylose and glycogen are both glucose polymers, yet they have somewhat different properties. What is one important difference between them?
One is a linear polymer while the other is highly branched
Alkali hydrolysis of triacylglycerols is called ____ and yields ____ and ____.
saponification; salts of fatty acids; glycerol
The structure is an example of a(n):
wax ester
What characteristic is most used to define lipids?
solubility
How many hydroxyl groups does a molecules of glycerol have?
3
Saponification is the hydrolysis of a(n)
ester bond
Unsaturated fatty acids usually have ____ double bonds.
cis
Glycolipids are characterized by containing the following non-lipid component:
sugars
Author
gbiebs
ID
366025
Card Set
Problem Sets and Quiz Answers for Exam 2 (Biochemistry I)