BIOLOGY QUESTION AND
ANSWERS:HUMAN BODY,
GENETICS, AND CELLULAR
LIFE, CELLULAR ANATOMY
AND FUNCTION
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,1. Cardiovascular System
1. How many chambers does the heart have?
Answer: Four
2. Which chamber is located on the top left of the heart?
Answer: Left Atrium
3. Which chamber is located on the top right of the heart?
Answer: Right Atrium
4. Which chamber is located on the bottom right of the heart?
Answer: Right Ventricle
5. Which chamber is located on the bottom left of the heart?
Answer: Left Ventricle
6. What are valves?
Answer: Keep blood from flowing backwards
7. A heart beat goes "Lub-Dub". Which chambers contract during "Lub"?
Answer: Left and Right Atria
8. A heart beat goes "Lub-Dub". Which chambers contract during "Dub"?
Answer: Left and Right Ventricles
9. In which order does blood flow through your body?
Answer: Right Atrium, Right Ventricle, Left Atrium, Left Ventricle
10. Where does blood from the right ventricle go?
Answer: Lungs
11. Where does blood from the left ventricle go?
Answer: Through the body
12. What happens in the lungs?
Answer: The lungs add oxygen and remove carbon dioxide.
13. What do arteries do?
Answer: They carry blood away from the heart.
14. What do capillaries do?
Answer: They carry blood to body cells.
15. What do veins do?
Answer: They carry blood to the heart.
16. Which type of blood vessel usually carries oxygen-rich blood?
Answer: Arteries
, 17. Which type of blood vessel usually carries oxygen-poor blood?
Answer: Veins
18. In which type of blood vessel is oxygen released into body cells?
Answer: Capillaries
19. Where does the pulmonary artery carry blood from and to?
Answer: It carries blood from the right ventricle to the lungs.
20. Where does the pulmonary vein carry blood from and to?
Answer: It carries blood from the lungs back to the left atrium.
21. Is the pulmonary vein or artery low in oxygen?
Answer: Pulmonary vein
22. What do red blood cells do?
Answer: Carry oxygen
23. What do white blood cells do?
Answer: Fight diseases
24. What do platelets do?
Answer: Help stop bleeding when you are cut.
25. Where does sugar enter the body?
Answer: Intestines
26. Where does sugar leave the body?
Answer: Capillaries
27. Where does urea enter the body?
Answer: Liver
28. Where does urea leave the body?
Answer: Kidney
2. Genetics and DNA
29. Which pair of nitrogenous bases will form a bond in a DNA molecule?
Answer: Adenine and Thymine
30. What three components make up a nucleotide?
Answer: A phosphate, a deoxyribose, and a nitrogenous base
31. Which nitrogenous bases are needed to complete the DNA strand pictured
below?
Answer: Adenine, Thymine, Cytosine, Guanine (in order, from top to bottom)