BIOL 181 week 3 quiz

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Jefferson State Community College *

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181

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Biology

Date

Feb 20, 2024

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docx

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16

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Week 3 Quiz - Results Attempt 1 of 1 Written Sep 21, 2023 2:07 AM - Sep 21, 2023 2:55 AM Released Sep 30, 2023 12:55 AM Attempt Score 97 / 100 - 97 % Overall Grade (Highest Attempt) 97 / 100 - 97 % Question 1 3 / 3 points In case an American needs an emergency blood transfusion, blood with the following blood type(s) can be given without fear of agglutination? Question options: O+ AB+ AB- Blood with the same blood type as the person needing the transfusion. Either C or D can be given. Hide question 1 feedback Good work; your answer is correct! Question 2 3 / 3 points Lymphocytes can be classified in the following group or groups: Question options:
monocytes B-cells T-cells natural killer (NK) cells Answers B, C, and D are correct Hide question 2 feedback Good work; your answer is correct! Question 3 3 / 3 points Which of the following is/are true of the molecule named hemoglobin? Question options: It can bind to only one molecule of oxygen. It numbers approximately 1 to 2 million in each erythrocyte. It contains four folded chains of a protein named globin. It functions as the nucleus in all mature erythrocytes. It is a very simple protein structure. Hide question 3 feedback Good work; your answer is correct! Question 4 3 / 3 points Which of the following is/are important in the process named hemostasis by which the body seals a ruptured blood vessel and prevents further loss of blood? Question options: vascular spasm
formation of a platelet plug coagulation fibrinolysis A, B, and C are all correct. Hide question 4 feedback Good work; your answer is correct! Question 5 3 / 3 points The total life span of an erythrocyte: Question options: Is the same amount of time that it takes one RBC to cycle once through the blood stream. Averages about 5-7 days. Averages about 120 days. Averages approximately 1-2 years. None of the above. Hide question 5 feedback Good work; your answer is correct! Question 6 3 / 3 points Which of the following is true of leukocytes? Question options: They are very similar in appearance and function as red blood cells. Leukocytes are smaller than and more numerous than red blood cells. Like red blood cells, mature leukocytes also lack a nucleus and other intracellular organelles. Leukocytes always remain in circulation throughout the body.
The leukocyte is a major component of the body's defenses against disease. Hide question 6 feedback Good work; your answer is correct! Question 7 3 / 3 points The blood type of a person's blood depends on which of the following factors? Question options: Which of the three antigens, A, B, and/or O, are located on the surface of the erythrocytes. Which of two antigens, Rh+ or Rh-, are located on the surface of the erythrocytes. Which of the two antigens, A or B or both, are located on the surface of the erythrocytes. Whether or not the Rh antigen is found on the surface of the erythrocytes. The blood type depends on both C and D. Hide question 7 feedback Good work; your answer is correct! Question 8 3 / 3 points Which of the following is/are true of platelets? Question options: They arise from cells called megakaryocytes. They do not contain a nucleus. They play an important part in the clotting of blood. They are not cells. All of the above are true. Hide question 8 feedback
Good work; your answer is correct! Question 9 3 / 3 points The opening of any heart valve only occurs when: Question options: the blood pressure in the heart chamber from which blood is flowing is higher than the blood pressure in the chamber to which the blood is supposed to flow. the chordae tendinae pull it open. blood tries to flow in an incorrect/opposite direction. the cardiac muscle surrounding the valve contracts. papillary muscles push it open. Hide question 9 feedback Good work; your answer is correct! Question 10 0 / 3 points Which of the following statements about valves in the heart is/are true? Question options: A valve enables blood to only flow in one direction. A valve keeps blood from flowing in a reverse direction. All of the valves open when the blood pressure on one side of the valve is higher than on the other side of the valve. Statements A and B are correct. Statement C is incorrect. Statements A, B, and C are correct. Hide question 10 feedback Statements A, B, and C are correct. Question 11 3 / 3 points
Which of the following statements about the left ventricle is/are true? Question options: Blood entering the left ventricle is usually quite low in its oxygen concentration. Blood exits the left ventricle through the aortic valve into the aorta. The left ventricle contracts at the same time as the left atrium. The wall of the left ventricle is very thin but also is very strong. Both B and D are correct. Hide question 11 feedback Good work; your answer is correct! Question 12 3 / 3 points Which of the following parts of an ECG represents the depolarization of the atria? Question options: The P-wave The T-wave The ST interval The PR-interval The QRS-complex Hide question 12 feedback Good work; your answer is correct! Question 13 3 / 3 points Let the left atrium = 1; the right atrium = 2; the left ventricle = 3; the right ventricle = 4. Blood then would flow through the heart in the following order:
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