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via diffusion down a concentration gradient as O2 levels are higher in the lungs than in the blood. for faster diffusion you need:a large surface area (lungs have million of alveoli which are air filled s...

Blood glucose levels are controlled by the pancreatic release of the hormone insulin. Insulin is released from the pancreas when blood glucose concentration is high. This causes glucose to move from the b...

DNA is replicated in a semi-conservative manner, which means that both 'parental strands' are used as templates. This ensures that genetic information is passed onto offspring without any changes
(di...

They are all components of blood. Platelets are small fragments of cells and help blood to form clots. This stops the body from bleeding when a blood vessel gets damaged. White blood cells destroy microor...

Aerobic respiration requires oxygen to completely break down glucose and produce energy. The equation is C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O. Anae...