Questions: BIO-202L Topic 2: Blood and Lymph PRACTICE IT LO 2.1. What are platelets responsible for? Breaking down old blood cells. Oxygen transport. Blood clotting. Filtering waste from the blood. Transporting oxygen in the blood. Submit answer

BIO-202L Topic 2: Blood and Lymph PRACTICE IT LO 2.1. What are platelets responsible for? Breaking down old blood cells. Oxygen transport. Blood clotting. Filtering waste from the blood. Transporting oxygen in the blood. Submit answer
Transcript text: BIO-202L Topic 2: Blood and Lymph PRACTICE IT LO 2.1. What are platelets responsible for? Breaking down old blood cells. Oxygen transport. Blood clotting. Filtering waste from the blood. Transporting oxygen in the blood. Submit answer
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Solution

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The answer is the third one: Blood clotting.

Explanation for each option:

  • Breaking down old blood cells: This is primarily the function of the spleen and liver, not platelets. Therefore, this option is incorrect.

  • Oxygen transport: This is the primary function of red blood cells (erythrocytes), not platelets. Therefore, this option is incorrect.

  • Blood clotting: Platelets are small cell fragments in the blood that are crucial for blood clotting. They gather at the site of a blood vessel injury, stick to the lining, and work with other substances to form a clot. Therefore, this option is correct.

  • Filtering waste from the blood: This is a function of the kidneys, not platelets. Therefore, this option is incorrect.

  • Transporting oxygen in the blood: As mentioned earlier, this is the role of red blood cells, not platelets. Therefore, this option is incorrect.

In summary, platelets are responsible for blood clotting.

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