Exam (elaborations) Biology Notes(The Fundamental Unit980

Science Bowl Questions – Biology, Set 2 1. Multiple Choice1. Multiple Choice: The adult human of average age and size has approximately how many quarts of blood? Is it: a) 4 b) 6 c) 8 d) 10 ANSWER: B -- 6 2. Multiple Choice: Once the erythrocytes enter the blood in humans, it is estimated that they have an average lifetime of how many days. Is it: a) 10 days b) 120 days c) 200 days d) 360 days ANSWER: B -- 120 Days 3. Multiple Choice: Of the following, which mechanisms are important in the death of erythrocytes (pron: eh-rith-reh-sites) in human blood? Is it a) phagocytosis (pron: fag-eh-seh-toe-sis) b) hemolysis c) mechanical damage d) all of the above ANSWER: D -- all of the above 4. Multiple Choice: Surplus red blood cells, needed to meet an emergency, are MAINLY stored in what organ of the human body? Is it the: a) pancreas b) spleen c) liver d) kidneys ANSWER: B – spleen 5. Multiple Choice: When a human donor gives a pint of blood, it usually requires how many weeks for the body RESERVE of red corpuscles to be replaced? Is it: a) 1 week b) 3 weeks c) 7 weeks d) 21 weeks ANSWER: C -- 7 weeks 6. Short Answer: There are three substances found in human blood which carry oxygen and which begin with the letter "H". Name two of these substances. ANSWER: Hemoglobin, Hemocyanin, Hemerythrin 7. Multiple Choice: The several types of white blood cells are sometime collectively referred to as: Science Bowl Questions Biology - 2 a) erythrocytes (pron: eh-rith-row-cites) b) leukocytes (pron: lew-kah-cites) c) erythroblasts (pron: eh-rith-rah-blast) d) thrombocytes (pron: throm-bow-cites) ANSWER: B -- leukocytes 8. Multiple Choice: The condition in which there is a DECREASE in the number of white blood cells in humans is known as: a) leukocytosis (pron: lew-kO-sigh-toe-sis) b) leukopenia (pron: lew-kO-pea-nee-ah) c) leukemia (pron: lew-kee-me-ah) d) leukohyperia (pron: lew-kO-high-per-e-ah) ANSWER: B -- leukopenia 9. Multiple Choice: The smallest of the FORMED elements of the blood are the: a) white cells b) red cells c) platelets d) erythrocytes ANSWER: C – platelets 10. Multiple Choice: Which of the following statements concerning platelets is INCORRECT. Platelets: a) contain DNA b) are roughly disk-shaped c) have little ability to synthesize proteins d) are between 1/2 and 1/3 the diameter of the red cell ANSWER: A -- contain DNA 11. Short Answer: What is the primary function of the platelets in huma blood? ANSWER: clotting or blocking leaks from blood vessels 12. Multiple Choice: When a wound occurs in humans, the platelets in the blood activate a substance which starts the clotting process. The substance which starts the clotting is: a) adenosine (pron: ah-den-ah-seen) b) histamine c) lecithin (pron: less-ah-thin) d) thrombin ANSWER: D -- Thrombin 13. Multiple Choice: When looking at the cross section of the human tibia, one finds the RED marrow in the: a) medullary cavity b) cancellous bone c) periosteum d) epiphysis ANSWER: A -- medullary cavity