Bio 253 exam 1 study Questions and Verified Correct Answers Latest Update |Already Graded A+|100 questions

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Bio 253 exam 1 study Questions and
Verified Correct Answers Latest Update
2024-2025 |Already Graded A+|100
questions

1. What is the main function of blood?
Answer: Transport substances (O₂, nutrients, wastes)
2. What percentage of blood is plasma?
Answer: ~55%
3. What percentage is formed elements?
Answer: ~45%
4. Main component of plasma?
Answer: Water
5. RBC function?
Answer: Carry oxygen
6. WBC function?
Answer: Fight infection
7. Platelet function?
Answer: Blood clotting
8. Hemoglobin binds:
Answer: Oxygen
9. What gives RBCs their color?
Answer: Hemoglobin

, 10. Lifespan of RBCs?
Answer: ~120 days
11. Where are RBCs produced?
Answer: Bone marrow
12. Hormone that stimulates RBC production?
Answer: Erythropoietin
13. Universal donor blood type?
Answer: O negative
14. Universal recipient?
Answer: AB positive
15. What determines blood type?
Answer: Antigens on RBCs
16. What is anemia?
Answer: Low RBC or hemoglobin
17. What is leukocytosis?
Answer: High WBC count
18. What is thrombocytopenia?
Answer: Low platelets
19. What is hematocrit?
Answer: % of RBCs in blood
20. What is clotting called?
Answer: Coagulation
21. Vitamin needed for clotting?
Answer: Vitamin K
22. What forms a clot?
Answer: Fibrin

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