#518
New News Biology #8
December 28, 2023 — 85 words — 1 min read
Surface Area to Volume Ratio & Specialized Exchange Systems
BACTERIAL CELLS can exchange substances directly through the cell wall, because they have a large surface area to volume ratio (the bigger the organism, the lower the ratio)
Almost ALL large, multi-cellular organisms have a SPECIALIZED EXCHANGE SYSTEM, because these organisms can’t have a very efficient diffusion process.
Features of these specialized exchange systems:
Large surface area to volume ratio;
Has very thin membranes so that they can be...
Permeable & have a...
High diffusion gradient