2 collect data blood carries many vital substances

2. Collect data : Blood carries many vital substances. Four of these are listed above the
Microscopic view . Oxygen and sugar are needed by all body cells. Carbon dioxide and urea
are waste products. What are the concentrations of each substance in this sample?
3. Investigate : Take samples of blood from all over the body. Try to determine where
sugar enters the blood, and where it is removed.
B.
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C.
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4. Investigate : Take blood samples to determine where urea enters the blood and is
removed.
A.
B.