ASU BIO 202 Exam 1 Questions and Answers Already Passed
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Module
ASU BIO 202
Institution
ASU BIO 202
ASU BIO 202 Exam 1 Questions and
Answers Already Passed
1. Illustrate the most common circulatory route heart arteries arterioles capillaries venules
veins
10. List and describe the plasma proteins Albumins are most abundant plasma protein
-Produced by the liver
-contribute to viscosity and o...
asu bio 202 exam 1 questions and answers already p
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ASU BIO 202 Exam 1 Questions and Answers Already Passed 1. Illust rate the most common circulatory route ✔✔heart arteries arterioles capillaries venules veins 10. List and describe the plasma proteins ✔✔Albumins are most abundant plasma protein -Produced by the liver -contribute to viscosity and osmolarity and influence s blood pressure, flow and fluid balance Fibrinogen - clotting Globulins (antibodies) - immune system defenses 11. Describe hemopoetic tissues ✔✔Hemopoietic tissues produce formed elements Red bone marrow - produces RBCs, WBCs & platelets -committed cel ls are destined to continue down a specific cell line Hemopoietic stem cells multiply continually & are pluripotent (capable of differentiating into multiple cell lines) Differentiate into colony -forming units (CFUs) that give rise to the different formed elements. 12. Explain the process of erythropoiesis ✔✔The production of erythrocytes begins with a hemopoietic stem cell in the red bone marrow -Erythropoiesis produces 2.5 million RBCs/second -Development takes 3 -5 days Erythroblasts multiply & synthesize hemoglobin -Nucleus degenerates to form a reticulocyte Erythrocyte - ER has degenerated and cell is now a mature RBC -No nucleus or organelles -Cannot make proteins o r divide -Lives ~ 120 days 13. List the nutrients required for erythropoiesis ✔✔Iron is key nutritional requirement for erythropoiesis B12 & folic acid - for DNA synthesis & rapid cell division Vitamin C & copper - cofactors for enzymes synthesizing RB Cs 14. Describe the structure of a typical erythrocyte and relate structure to function ✔✔Shape: Disc-shaped, thick rim, sunken center Outer surface of the plasma membrane has glycoproteins & glycolipids - determine blood type Inner surface of plasma me mbrane has two types of proteins, actin & spectrin, for resilience & durability Only cells of body that carry on anaerobic fermentation indefinitely, so they don't use the O2 they transport
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