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Exchange organs - Organs in charge of exchanging material from the outside environment to inside of the body. Examples lungs and kidneys. Mass transport system - System by which materials can be transported from the exchange organs to the all the cells in the body. The transport system is also the ones used by the body
Therefore, large organisms have specialised gas exchange surfaces and a mass transport system. In mammals, these include the alveoli and the cardiovascular system. Characteriscs of a mass transport system: • Vessels • Direconal movement • Transport medium
7 Απρ 2024 · Revision notes on 3.1.2 Features of Exchange Surfaces for the OCR A Level Biology syllabus, written by the Biology experts at Save My Exams.
Definitions and Concepts for OCR (A) Biology A-Level. Topic 3 - Exchange and Transport. Topic 3.1: Exchange surfaces. Alveoli: Tiny air sacs that serve as the primary gaseous exchange surface. They consist of a thin epithelial cell layer, collagen and elastic fibres. Breathing rate: The number of breaths per minute.
Learn about and revise exchange surfaces and transport systems with this BBC Bitesize Combined Science AQA Synergy study guide.
I can explain how exchange surfaces and transport systems enable cells in multicellular plants to be supplied quickly with substances they need to stay alive.
I can explain how exchange surfaces and transport systems enable cells in multicellular organisms to be quickly supplied with substances they need to stay alive.
