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MLT ASCP EXAM NEWEST 2025 ACTUAL EXAM TEST
BANK| COMPLETE 550 REAL EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) ALREADY GRADED A+| ASCP MLT EXAM
PREP 2025|| BRAND NEW!!
What single feature of normal RBCs is most responsible for limiting their life span?
- Loss of mitochondria
- Increased flexibility of the cell membrane
- Reduction of hemoglobin iron
- Loss of the nucleus - Correct Answer - d. Loss of the nucleus
Extravascular hemolysis can occur when:
- RBCs are mechanically ruptured
- RBCs extravasate for the blood vessels into the tissues
- Splenic macrophages ingest senescent cells
- Erythrocytes are trapped in blood clots outside the blood vessels -
Correct Answer - c. Splenic macrophages ingest senescent cells
Which RBC process does not require energy?
- Oxygen transport
- Cytoskeletal protein deformability
- Preventing the peroxidation of proteins and lipids 1 / 4
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- Maintaining cytoplasm cationic electrochemical gradients - Correct
Answer - a. Oxygen transport
What pathyway anaerobically generates energy in the form of ATP?
- Hexose monophosphate pathway
- Rapoport-Luebering pathway
- Embden-Meyerhof pathway
- 2,3-BPG pathway - Correct Answer - c. Embden-Meyerhof pathway
To survive, the RBC must detoxify peroxides. What hexose- monophosphate shunt product(s) accomplishes detoxification?
- ATP
- 2,3 BPG
- Pyruvic acid and lactic acid
- NADPH and reduced glutathione - Correct Answer - d. NADPH and
reduced glutathione
Which of the following helps maintain RBC shape?
- Membrane phospholipids
- Cytoskeletal proteins
- GPI anchor
- Glycocalyx - Correct Answer - b. Cytoskeletal proteins
A hemoglobin molecule is composed of: 2 / 4
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- One heme molecule and four globin chains
- Ferrous iron, protoporphyrin IX, and a globin chain
- Protoporphyrin IX and four globin chains
- Four heme molecules and four globin chains - Correct Answer - d.
Four heme molecules and four globin chains
Iron is transported in plasma via:
- Hemosiderin
- Ferritin
- Transferrin
- Hemoglobin - Correct Answer - c. Transferrin
What is the major metabolically available storage form of iron in the body?
- Hemosiderin
- Ferritin
- Transferrin
- Hemoglobin - Correct Answer - b. Ferritin
The total iron-binding capacity (TIBC) of the serum is an indirect measure of which iron-related protein?
- Hemosiderin
- Ferritin
- Transferrin 3 / 4
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- Hemoglobin - Correct Answer - c. Transferrin
For a patient with classic iron study values that are equivocal for iron deficiency, which of the following tests would be most helpful in determining whether iron deficiency is present or not?
- Zinc protoporphyrin
- Peripheral blood sideroblast assessment
- Soluble transferrin receptor
- Mean cell hemoglobin - Correct Answer - c. Soluble transferrin
receptor
What membrane-associated protein in enterocytes transports iron from the intestinal lumen into the enterocyte?
- Transferrin
- Ferroportin
- DMT1
- Ferrochelatase - Correct Answer - c. DMT1
Iron is transported out of macrophages, hepatocytes, and enterocytes by what membrane protein?
- Transferrin
- Ferroportin
- DMT1
- Ferrochelatase - Correct Answer - b. Ferroportin
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