Key facts
- The cell is the basic unit of life.
- Vitamin deficiencies: A (night blindness), C (scurvy), D (rickets), B1 (beriberi).
- Blood groups A, B, AB and O; O negative is the universal donor and AB positive the universal recipient.
- The heart pumps blood; the kidneys filter it; insulin (from the pancreas) controls blood sugar.
- Diseases: malaria (Plasmodium, spread by female Anopheles mosquitoes), tuberculosis (bacterial), COVID-19 (viral).
Practice questions
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