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10 cards from this deck
~37.2 trillion cells
Ovum, ~0.1 mm diameter
~7 micrometres (µm) or 0.007 mm
Biconcave disc (indented both sides)
High surface area to volume ratio (SA:V)
Shorter distances = faster molecule movement
Smaller objects have larger SA:V ratios
Cubic units: mm³, cm³, m³
Finger-like projections that increase SA for nutrient absorption
Elongated shapes have higher SA:V ratios
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