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UOFSC BIO302 EXAM 1-
STEPHANIE ACKERSON
QUESTIONS AND ANSWER S
GRADED A+
Question :Proteins are an extremely diverse classification
of macromolecules. What are different examples of functional roles of proteins?CORRECT ANSWER :•Structural: Provides the cell with shape and structure (Actin, Lamin A/C,
tubulin)•Enzymes: Catalyze covalent bond breakage or
formation (Trypsin, polymerases)•Transport: Carries
other molecules or ions (Hemoglobin)•Motor: Generates
movement in cells and tissues (Myosin)•Storage: Stores
small molecules or ions (Ferritin)•Signal: Carries signals
from cell to cell or within the cell (Insulin)•Receptor:
Detects signals and transmits them to the cell's response
machinery (Insulin receptor)•Gene Regulatory: Binds to
DNA to switch genes on or off (p53, p21, lactose repressor)
Question :How are polypeptides formed?
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CORRECT ANSWER :Amino acids are linked together
by peptide bonds.A protein is made of amino acids linked together in a polypeptide chain.
Question :How do we denote the different terminals of a
protein? Why are they named this way?
CORRECT ANSWER :Each polypeptide has a free
amino group at one end. This end is called the N terminal, or the amino terminal, and the other end has a free carboxyl group, also known as the C or carboxyl terminal.
Question :D
CORRECT ANSWER :Aspartic Acid (1 letter)
Question :Asp
CORRECT ANSWER :Aspartic Acid (3 letter)
Question :E
CORRECT ANSWER :Glutamic acid (1 letter)
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Question :Glu
CORRECT ANSWER :Glutamic acid (3 letter)
Question :R
CORRECT ANSWER :Arginine (1 letter)
Question :Arg
CORRECT ANSWER :Arginine (3 letter)
Question :K
CORRECT ANSWER :Lysine (1 letter)
Question :Lys
CORRECT ANSWER :Lysine (3 letter)
Question :H
CORRECT ANSWER :Histidine (1 letter)
Question :His
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