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Living cells need a constant supply of oxygen and nutrients - Edexcel - GCSE Biology - Question 6 - 2016 - Paper 1
Question 6
Living cells need a constant supply of oxygen and nutrients. (a) Describe how oxygen is transported around the body by the blood.
Worked Solution & Example Answer:Living cells need a constant supply of oxygen and nutrients - Edexcel - GCSE Biology - Question 6 - 2016 - Paper 1
Step 1
Describe how oxygen is transported around the body by the blood.
Answer
Oxygen is transported in the blood primarily in two ways:
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Attachment to Red Blood Cells: Most oxygen binds to hemoglobin, a protein found in red blood cells. This forms oxyhemoglobin, which allows for efficient transport of oxygen.
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Transport Through Blood Vessels: The oxygen-rich blood is pumped from the heart through named blood vessels such as arteries, which carry the oxygen to tissues throughout the body.