Bio 402 UH Manoa Exam 1 Review for Final || A+ Graded
Already.
The major carrier of chemical energy in all cells is:
acetyl triphosphate
adenosine monophosphate
adenosine triphosphate
cytosine tetraphosphate
uridine diphosphate correct answers adenosine triphosphate
Which group contains only uncommon amino acids?
arginine, proline, glycine
proline, isoleucine, histidine
hydroxyproline, methionine, hydroxylysine
hydroxyproline, seleocysteine, ornithine correct answers hydroxyproline, selenocysteine,
ornithine
This peptide alanylglutamylglycylalanyleucine has:
a disulfide bridge
five peptide bonds
four peptide bonds
no free carboxyl group
two free amino groups correct answers four peptide bonds
While the composition of hemoglobin in adult humans is A2B2, in the fetus, _____ is observed
Z2E2
A2Z2
A2E2
A2D2
(alpha - A, zeta - Z, gamma - y, delta - 8) correct answers None of the above
A2G2 (a2,y2)
Which is the C-terminal amino acid in the peptide val-leu-gly? correct answers Gly
N-term > C-term
What level of protein structure by the 3-D structure of an entire polypeptide including all amino
acid side chains?
primary
secondary
tertiary
quaternary
none of these correct answers tertiary
, In a heme group, iron forms two coordianated bonds, one to oxygen and the other to _______.
The heme iron is in the _____ charge state.
His-64; Fe3+
His-93; Fe3+
His-64; Fe2+
His-93; Fe2+
none correct answers His-93; Fe2+
How does CO2 affect hemoglobin-oxygen binding?
Co2 binds directly to the oxygen binding site
CO2 displaces BPG, thus promoting the oxy state
CO2 is converted to bicarbonate which promotes the
oxy state
CO2 is converted to bicarbonate which promotes the
deoxy state
none correct answers CO2 is converted to bicarbonate which promotes the DEOXY state
Which allosteric effector has the greatest ability to stabilize the deoxy state of hemoglobin?
BPG
Co2
O2
H+
all are equal ability correct answers BPG
Bone and tendons contain _____ while hair and nails contain _____.
collagen; keratin
actin; keratin
tubulin; collagen
collagen; actin
tubulin; keratin correct answers collagen; keratin
Which of the following correctly describes the sequence of events in the myosin-actin cycle?
Remember:
ATP binds to myosin before it lets go
myosin automatically binds to next actin subunit
release of Pi and ADP before returns to original correct answers *Myosin bound to Actin*
ATP binds to myosin, myosin release from actin, myosin binds to another actin subunit, release
of Pi and ADP, stretched myosin returns to original conformation
Which of the following fibers is correctly paired with the protein that forms the fiber?
microfilaments - actin
microtubule - tubulin
extracellular support fibers - collagen
Already.
The major carrier of chemical energy in all cells is:
acetyl triphosphate
adenosine monophosphate
adenosine triphosphate
cytosine tetraphosphate
uridine diphosphate correct answers adenosine triphosphate
Which group contains only uncommon amino acids?
arginine, proline, glycine
proline, isoleucine, histidine
hydroxyproline, methionine, hydroxylysine
hydroxyproline, seleocysteine, ornithine correct answers hydroxyproline, selenocysteine,
ornithine
This peptide alanylglutamylglycylalanyleucine has:
a disulfide bridge
five peptide bonds
four peptide bonds
no free carboxyl group
two free amino groups correct answers four peptide bonds
While the composition of hemoglobin in adult humans is A2B2, in the fetus, _____ is observed
Z2E2
A2Z2
A2E2
A2D2
(alpha - A, zeta - Z, gamma - y, delta - 8) correct answers None of the above
A2G2 (a2,y2)
Which is the C-terminal amino acid in the peptide val-leu-gly? correct answers Gly
N-term > C-term
What level of protein structure by the 3-D structure of an entire polypeptide including all amino
acid side chains?
primary
secondary
tertiary
quaternary
none of these correct answers tertiary
, In a heme group, iron forms two coordianated bonds, one to oxygen and the other to _______.
The heme iron is in the _____ charge state.
His-64; Fe3+
His-93; Fe3+
His-64; Fe2+
His-93; Fe2+
none correct answers His-93; Fe2+
How does CO2 affect hemoglobin-oxygen binding?
Co2 binds directly to the oxygen binding site
CO2 displaces BPG, thus promoting the oxy state
CO2 is converted to bicarbonate which promotes the
oxy state
CO2 is converted to bicarbonate which promotes the
deoxy state
none correct answers CO2 is converted to bicarbonate which promotes the DEOXY state
Which allosteric effector has the greatest ability to stabilize the deoxy state of hemoglobin?
BPG
Co2
O2
H+
all are equal ability correct answers BPG
Bone and tendons contain _____ while hair and nails contain _____.
collagen; keratin
actin; keratin
tubulin; collagen
collagen; actin
tubulin; keratin correct answers collagen; keratin
Which of the following correctly describes the sequence of events in the myosin-actin cycle?
Remember:
ATP binds to myosin before it lets go
myosin automatically binds to next actin subunit
release of Pi and ADP before returns to original correct answers *Myosin bound to Actin*
ATP binds to myosin, myosin release from actin, myosin binds to another actin subunit, release
of Pi and ADP, stretched myosin returns to original conformation
Which of the following fibers is correctly paired with the protein that forms the fiber?
microfilaments - actin
microtubule - tubulin
extracellular support fibers - collagen
