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BIOL 215 Liberty University Test One Questions and Answers | 100% Correct, Guaranteed A Grade
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BIOL 215 Liberty University Test One Questions and Answers | 100% Correct, Guaranteed A Grade
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BIOL 215 Liberty University Test OneQuestions and Answers | 100% Correct,
Guaranteed A Grade2024-2025
Functions of Blood - <<ANSWER>>Transportation, regulation of pH and osmosis
Maintenance of body temperature
Protection against foreign substances
Clot formation
Composition of Blood - <<ANSWER>>Plasma and formed elements
Carbon dioxide from tissues to lungs - <<ANSWER>>7% dissolved in plasma
23% in combination with hemoglobin
70% transported as bicarbonate ions
Hemoglobin subunits - <<ANSWER>>2 alpha and 2 beta, each subunit contains
polypeptide chain and a heme molecule
Heme - <<ANSWER>>iron molecule in the center binds oxygen
Types of hemoglboin - <<ANSWER>>embryonic, fetal, adult
Forms of hemoglobin - <<ANSWER>>oxyhemoglobin, deoxyhemoglobin,
carbaminohemoglobin, carboxyhemoglobin
Oxyhemoglobin - <<ANSWER>>transporting oxygen
Deoxyhemoglobin - <<ANSWER>>no oxygen
Carbaminohemoglobin - <<ANSWER>>transporting carbon dioxide; CO2 attaches to
globin rather than heme
Carboxyhemoglobin - <<ANSWER>>hemoglobin bound to carbon monoxide
Erythropoiesis - <<ANSWER>>process of producing new RBCs (~4 days)
, Process of producing new RBCs - <<ANSWER>>Hemocytoblasts --> Myeloid stem cell
--> Proerythroblasts --> Early erythroblasts --> Int. erythroblasts --> Late erythroblasts --
> Reticulocytes --> Erythrocytes
Process of increasing blood O2 - <<ANSWER>>Decreased blood O2 --> Kidney -->
Increased erythropoietin (EPO) --> Red bone marrow --> increased RBC production -->
increased blood O2
Hemolysis - <<ANSWER>>abnormal breakdown of RBCs
Anemia - <<ANSWER>>decrease in the amount of RBCs or hemoglobin in the blood
WBC movements - <<ANSWER>>ameboid, diapedesis, chemotaxis
Ameboid - <<ANSWER>>pseudopods
Diapedesis - <<ANSWER>>cells become thin, elongate, and move either between or
through endothelial cells of capillaries
Chemotaxis - <<ANSWER>>attraction to and movement toward foreign materials or
damaged cells
Granulocytes - <<ANSWER>>cytoplasm contains large granules
multi-lobed nuclei
Three distinctive types: neutrophils, eosinophils, basophils
Agranulocytes - <<ANSWER>>cytoplasm contains small granules
nuclei are not lobed
Two distinctive types: Monocytes and Lymphocytes
Neutrophils - <<ANSWER>>60-70% of WBCs
First responders at site of infection/injury
Secretes lysozymes to destroy certain bacteria
Eosinophils - <<ANSWER>>2-4% of WBCs
defend against worm parasites
modulate inflammatory response
Basophils - <<ANSWER>>0.5-1% of WBCs
inflammatory response and allergic reactions
produce histamine and heparin
Lymphocytes - <<ANSWER>>20-25% of WBCs
B-Cells: produce antibodies
T-Cells: destroy infected or cancerous cells
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