Biology101: Circulatory System Flashcards Actual Exam 2024-2025 Questions And Accurate Answers Newest Exam

BIOLOGY101: Circulatory System Flashcards ACTUAL EXAM 2024-2025 QUESTIONS AND ACCURATE ANSWERS NEWEST exam Q1 What are the primary components of blood? Answers: plasma red blood cells white blood cells platelets About 45% of total blood volume is due to cellular components, while the remaining 55% comes from plasma. 2 QWhat is the normal pH of blood? Answers: 7.4 Normal blood is slightly basic, and even minute deviations can be very harmful. Thus, pH is tightly regulated by mechanisms such as the bicarbonate buffering system. 3 Q What is the difference between acidosis and alkalosis? Answers: Acidosis is an increase in blood acidity, occurring when blood pH drops below 7.35. Alkalosis is an increase in blood basicity, occurring when blood pH rises above 7.45. 4 QIf a person were to hyperventilate continuously, would they eventually experience acidosis or alkalosis? Answers: alkalosis Hyperventilation, or quickened breathing, results in an increased loss of CO2. The reaction proceeds according to this equilibrium: H2O + CO2 H2CO3 H+ + HCO3- When CO2 is excreted, the equilibrium shifts to the left to regenerate it. This requires protons to combine with bicarbonate ions, decreasing the plasma H+ concentration. Lowered H+, or decreased acidity, means that pH will