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Heart, blood vessels and cardiac cycle

Why is a mass transport system required in large mammals?

A
  • Diffusion distance is too long to meet metabolic demand
  • Simple diffusion is too slow to reach all cells
B
  • Diffusion distance is too short to maintain concentration gradients
  • Simple diffusion is too fast to supply all cells
C
  • Surface area is too large to meet metabolic demand
  • Active transport is too slow to reach all cells
D
  • Osmotic pressure is too low to support cell respiration
  • Simple diffusion is too rapid to reach all cells

Heart, blood vessels and cardiac cycle Flashcards

  1. A Level
  2. /Biology
  3. /Heart, blood vessels and cardiac cycle

Flashcards for Edexcel A A Level Biology Heart, blood vessels and cardiac cycle, covering the key terms, definitions and processes you need to recall for Paper 1, Paper 2 and Paper 3. 15 cards, matched to the Edexcel A A Level Biology (9BN0) specification.

Flashcards