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MLT ASCP NEWEST 2024 – 2025 ACTUAL EXAM
QUESTIONS WITH CORRECT VERIFIED
ANSWEWRS/ RATED A+
What pathway anaerobically generates energy in the form of ATP?
- Hexose monophosphate pathway
- Rapoport-Lumbering 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
What platelet organelle sequesters ionic calcium and binds a series of enzymes of the eicosanoid pathway? 1 / 3
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- G protein
- Dense granules
- DTS
- SCCS - Correct Answer - c. DTS
What platelet membrane phospholipid flips from the inner surface to the plasma surface on activation and serves as the assembly point for coagulation factors?
- Phosphatidylethanolamine
- Phosphatidylinositol
- Phosphatidylcholine
- Phosphatidylserine - Correct Answer - b. Phosphatidylinositol
What is the name of the eicosanoid metabolite produced from endothelial cells that suppresses platelet activity?
- TXA2
- Arachidonic acid
- Cyclooxygenase
- Prostacyclin - Correct Answer - d. Prostacyclin
The glycolipids of the RBC membrane:
- Provide flexibility
- Carry RBC antigens
- Constitute ion channels
- Attach the cytoskeleton to the lipid layer - Correct Answer - b. Carry RBC antigens
RBC phospholipids are arranged:
- In a hexagonal lattice
- In chains beneath a protein exoskeleton 2 / 3
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- In two layers whose composition is asymmetric
- So that hydrophobic portions are facing the plasma - Correct Answer - c. In two layers
whose composition is asymmetric
A hemoglobin molecule is composed of:
- 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
Which of the following forms of hemoglobin molecule has the lowest affinity for oxygen?
- Tense
- Relaxed - Correct Answer - a. Tense
The predominant hemoglobin found in a healthy newborn is:
- Gower-1
- Gower-2
- A
- F - Correct Answer - d. F
Which of the following is a description of the structure of oxidized hemoglobin?
- Hemoglobin carrying oxygen on heme; synonymous with oxygenated hemoglobin
- Hemoglobin with iron in the ferric state (methemoglobin) and not able to carry oxygen
- Hemoglobin with iron in the ferric state so that carbon dioxide replaces oxygen in the
- Hemoglobin carrying carbon monoxide; hence "oxidized" refers to the single oxygen -
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heme structure
Correct Answer - b. Hemoglobin with iron in the ferric state (methemoglobin) and not able to carry oxygen