BLD 324 EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS GRADED A++ 100% GUARANTEED PASS
Which compound is the immediate precursor to Heme?
Protoporphyrin IX
Name the precursor to indirect bilirubin.
heme
Which breakdown product of bilirubin is produced in the intestine by the action of
microorganisms?
urobilinogen
What plasma protein transports indirect bilirubin in the bloodstream?
Albumin
Which breakdown product of bilirubin is found in the urine of healthy individuals?
urobilinogen
Which organ conjugates indirect bilirubin?
liver
Which RBC process does not require energy?
a. Cytoskeletal protein deformability
b. Maintaining cytoplasm cationic electrochemical gradients
c. Oxygen transport
d. Preventing the peroxidation of proteins and lipids
What pathway anaerobically generates energy in the form of ATP?
,a. 2,3-BPG pathway
b. Embden-Meyerhof pathway
c. Hexose monophosphate pathway
d. Rapoport-Luebering pathway
Which is true concerning 2,3-BPG?
a. Enhances O2 release from hemoglobin
b. Source of RBC ATP
c. Source of RBC glucose
d. The least abundant of RBC organophosphates
What hexose-monophosphate shunt products participate in the detoxification of
peroxides?
a. 2,3-BPG and pyruvic acid
b. ATP and lactic acid
c. NADPH and reduced glutathione
d. Pyruvic and lactic acid
Which of the following helps maintain RBC shape?
a. Cytoskeletal proteins
b. Glycocalyx
c. GPI anchor
d. Membrane phospholipids
The glycolipids of the RBC membrane:
a. Attach the cytoskeleton to the lipid layer
b. Carry RBC antigens
, c. Constitute ion channels
d. Provide flexibility
RBC membranes block passage of most large molecules, such as proteins, but
allow passage of small molecules such as the cations Na+, K+, and Ca2+. What is
the term for this membrane property?
a. Deformable
b. Flexible
c. Intangible
d. Semipermeable
RBC membrane phospholipids are arranged:
a. In a hexagonal lattice
b. In chains beneath a protein cytoskeleton
c. In two layers whose composition is asymmetric
d. So that hydrophobic portions are facing the plasma
RBC membrane cholesterol is replenished from the:
a. Cytoplasm
b. EMB pathway
c. Mitochondria
d. Plasma
Hemoglobin iron may become oxidized to Fe3+ by several pathologic
mechanisms. What portion of the Embden-Meyerhof pathway reduces iron to
Fe2+?
a. Hexose monophosphate pathway
SOLUTIONS GRADED A++ 100% GUARANTEED PASS
Which compound is the immediate precursor to Heme?
Protoporphyrin IX
Name the precursor to indirect bilirubin.
heme
Which breakdown product of bilirubin is produced in the intestine by the action of
microorganisms?
urobilinogen
What plasma protein transports indirect bilirubin in the bloodstream?
Albumin
Which breakdown product of bilirubin is found in the urine of healthy individuals?
urobilinogen
Which organ conjugates indirect bilirubin?
liver
Which RBC process does not require energy?
a. Cytoskeletal protein deformability
b. Maintaining cytoplasm cationic electrochemical gradients
c. Oxygen transport
d. Preventing the peroxidation of proteins and lipids
What pathway anaerobically generates energy in the form of ATP?
,a. 2,3-BPG pathway
b. Embden-Meyerhof pathway
c. Hexose monophosphate pathway
d. Rapoport-Luebering pathway
Which is true concerning 2,3-BPG?
a. Enhances O2 release from hemoglobin
b. Source of RBC ATP
c. Source of RBC glucose
d. The least abundant of RBC organophosphates
What hexose-monophosphate shunt products participate in the detoxification of
peroxides?
a. 2,3-BPG and pyruvic acid
b. ATP and lactic acid
c. NADPH and reduced glutathione
d. Pyruvic and lactic acid
Which of the following helps maintain RBC shape?
a. Cytoskeletal proteins
b. Glycocalyx
c. GPI anchor
d. Membrane phospholipids
The glycolipids of the RBC membrane:
a. Attach the cytoskeleton to the lipid layer
b. Carry RBC antigens
, c. Constitute ion channels
d. Provide flexibility
RBC membranes block passage of most large molecules, such as proteins, but
allow passage of small molecules such as the cations Na+, K+, and Ca2+. What is
the term for this membrane property?
a. Deformable
b. Flexible
c. Intangible
d. Semipermeable
RBC membrane phospholipids are arranged:
a. In a hexagonal lattice
b. In chains beneath a protein cytoskeleton
c. In two layers whose composition is asymmetric
d. So that hydrophobic portions are facing the plasma
RBC membrane cholesterol is replenished from the:
a. Cytoplasm
b. EMB pathway
c. Mitochondria
d. Plasma
Hemoglobin iron may become oxidized to Fe3+ by several pathologic
mechanisms. What portion of the Embden-Meyerhof pathway reduces iron to
Fe2+?
a. Hexose monophosphate pathway
