This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 445 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 445 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... is a chemical reaction that releases energy needed for the body. A) Respiration. B) Digestion. C) Breathing. D) None of above. Show Answer Correct Answer: A) Respiration. 2. How does increasing temperature affect the rate of diffusion? A) Increases enzyme activity increasing the rate. B) Gives molecules more energy increasing the rate. C) Takes energy away from molecules slowing down the rate. D) Decreases enzyme activity and decreases the rate. Show Answer Correct Answer: B) Gives molecules more energy increasing the rate. 3. Pulmonary artery:to A) Lungs. B) Heart. C) Heart muscles. D) Right atrium. Show Answer Correct Answer: A) Lungs. 4. A blood vessel is called an artery when it: A) Transports oxygenated blood to the heart. B) Transports blood to the heart. C) Contains many valves. D) Transports blood away from the heart. Show Answer Correct Answer: D) Transports blood away from the heart. 5. The activity or duty of an organ or system is it's A) Structure. B) Function. C) Artery. D) Veins. Show Answer Correct Answer: B) Function. 6. What is the purpose of white blood cells in the circulatory system? A) Carrying oxygen. B) Fighting infections. C) Transporting nutrients. D) Filtering waste products. Show Answer Correct Answer: B) Fighting infections. 7. Choose the characteristics of veins. A) Have very thick, strong, elastic walls. B) Have thin walls, made up of onlyone layer of cells. C) Have thinner wall, large space inside the vessel. D) None of above. Show Answer Correct Answer: C) Have thinner wall, large space inside the vessel. 8. Small, thin blood vessels that carry blood to the tissue and deliver gases and nutrients to the cells A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 9. When an infection occurs, the number of A) Red blood cells increases. B) White blood cells increases. C) Red blood cells decreases. D) White blood cells decreases. Show Answer Correct Answer: B) White blood cells increases. 10. What is the heart valves purpose? A) It brings blood from the body back to the heart. B) They give blood oxygen. C) They control blood flow throughout the heart. D) None of above. Show Answer Correct Answer: C) They control blood flow throughout the heart. 11. Part of heart that pumps blood to the whole body is ..... A) Right ventricle. B) Right atrium. C) Left ventricle. D) Left atrium. Show Answer Correct Answer: C) Left ventricle. 12. How do eating proteins improve body A) Long term energy that can be stored for later. B) Short term energy produced during CR. C) Structure is animals(muscles) during growth and repair. D) None of above. Show Answer Correct Answer: C) Structure is animals(muscles) during growth and repair. 13. This disease does not have a certain protein needed to clot blood. A) Hemophilia. B) Sickle Cell Anemia. C) Hypertension. D) Leukemia. Show Answer Correct Answer: A) Hemophilia. 14. The heart gets oxygen from the ..... to make oxygenated blood. A) Heart. B) Lungs. C) Stomach. D) Kidneys. Show Answer Correct Answer: B) Lungs. 15. High blood pressure is called ..... A) Hypertension. B) Hypotension. C) Isotension. D) None of above. Show Answer Correct Answer: A) Hypertension. 16. If two parents are heterozygous for type A blood, what is the probability that their offspring would have type O blood? A) 100 %. B) 75%. C) 50%. D) 25%. Show Answer Correct Answer: D) 25%. 17. The thick muscle layer of the heart is called the A) Endocardium. B) Epicardium. C) Myocardium. D) Pericardium. Show Answer Correct Answer: C) Myocardium. 18. Which of the following blood vessels surround the alveoli in the lungs? A) Artery. B) Vein. C) Capillary. D) None of above. Show Answer Correct Answer: C) Capillary. 19. John wants to determine his blood type, so he takes a few drops of blood from a puncture wound in his finger and mixes it with various antisera(antibodies). His blood cells agglutinate when mixed with the anti-A and anti-Rh sera(antibodies) but not with the anti-B sera(antibodies). What agglutinins are in John's plasma? A) A only. B) B only. C) A & B only. D) None. E) A and Rh. Show Answer Correct Answer: B) B only. 20. Which one is correct about blood group AB Which statement is true about blood group AB. A) Individuals with blood group AB and have only B antigen Individuals from blood group AB have only B antigen. B) Individuals with blood group AB have both A and B antigens Individuals from blood group AB have antigen A and antigen B. C) Individuals with blood group AB do not have both A and B antigens Individuals from blood group AB do not have antigen A and antigen B. D) None of above. Show Answer Correct Answer: B) Individuals with blood group AB have both A and B antigens Individuals from blood group AB have antigen A and antigen B. ← PreviousNext →Related QuizzesScience QuizzesCirculatory System Quiz 1Circulatory System Quiz 2Circulatory System Quiz 3Circulatory System Quiz 4Circulatory System Quiz 5Circulatory System Quiz 6Circulatory System Quiz 7Circulatory System Quiz 8Circulatory System Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books