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Part of NCERT 11 Biology
Understanding the transport challenge in living organisms
Every living cell in your body needs:
But most cells are deep inside your body. How do they get what they need?
The Transport Problem: Billions of cells need constant delivery and waste pickup!
Understanding blood composition and plasma
Blood is classified as a connective tissue. Why?
Blood has TWO main components:
RBCs, WBCs, and Platelets - what they do
Formed elements = cells and cell fragments in blood
They make up 45% of blood volume.
Three types:
Each has a special job!
Why blood typing is crucial for transfusions
All human blood looks similar, but it's NOT the same!
Why it matters:
Two main grouping systems:
Understanding Rh blood groups and pregnancy complications
Another important antigen on RBC surface!
Named after: Rhesus monkeys (where it was first discovered)
Present in: About 80% of humans
Two types of people: