Name November 17, 201027 Lecture Quiz 5A Which is the percentage of erythrocytes
ID: 3519329 • Letter: N
Question
Name November 17, 201027 Lecture Quiz 5A Which is the percentage of erythrocytes in a volume of blood? ? 55%. ? 45%. D. 75% E, 54%. 2Which is a function of albumin? A. Lipid transport B. Immunity. C. Blood clotting. D. Osmotic Regulation. E. None of the above. Which is CORRECT about erythrocytes? A They are biconcave discs B. They have a large surface area relative to volume. C. They are anucleated D. They survive about 120 days E. All of the above. Which is FALSE about hemoglobin? A. Heme is partially organic but not protein. B. Each molecule may bind up to four oxygen molecuies. C. It functions to transport oxygen. D. Heme contains the element I. E. None of the above. S Which is the earliest stage of an erythrocyte? A Nommoblast B. Reticulocyte. C. Erythroblast. D. Hemocytoblast E. Promeg 6 Which best describes a lymphocyte? A. Multi-lobed nucleus. D. U-shaped nucleus akaryocyte. B. Stained by acidic dyes. C. Produces histamine and heparin E. May survive for years. Which best describes an eosinophil? A Stained by basic dyes. B. Classfied as an agranulocyte. C. Kills parasitic worms. E. May produce antibodies D. Contains heparin. 8. Which is normally not found in tissues away from blood? A. Eosinophils. B. Monocytes. C. Basophils. D. Lymphocytes. E. Neutrophils e Which leukocyte is the third most in numbers in a sample of blood? A. Neutrophils. B. Lymphocytes. C. Monocytes. D. Eosinophils. E. Basophils.Explanation / Answer
Answer: Q.1 - Option B
Explanation: Erythrocyte or Red Blood Cells accounts for ~45% of total volume of blood.
Answer: Q.2 - Option D.
Explanation: Albumin helps to retain water in blood by osmosis.
Answer: Q.3 - Option E
Explanation: RBC's are biconcave disc shaped cells which lacks nucleus. They survive for about 120 days and get destroyed at the spleen. They have a large surface area relative to the volume.
Answer: Q.4 - Option D.
Explanation: 4 oxygen molecule can bind to a haemoglobin, hence it helps in the transport of oxygen. Heme contain porphyrin an organic compound which binds to iron (fe).
Answer: Q.5 - Option D
Explanation: Haemocytoblast--> Common myeloid progenitor --> Proerythroblast --> Basophilic erythroblast --> Polychromatic erythroblast --> Normoblast --> Reticulocyte --> Erythrocyte.
Answer: Q.6 - Option E.
Explanation: Lymphocytes are agranulocyte, hence not multi-lobed. Memory B-cells survive for years. Histamines and heparin are produced by cells such as basophils and mast cells.
Answer: Q.7 - Option C.
Explanation: Eosinophils are stained by acidic dye. They contain granules. Increase in Eosinophils is associated with parasitic worm invasion.
Answer: Q.8 - Option C
Explanation: Neutrophils and lymphoctes are found in abundance, while basophils and eosinophils are found in least number. Monocytes accounts for ~9%.
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