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1.4.8.11: Protists as Decomposers - Biology

Learning OutcomesProvide examples of the protists’ important roles in decompositionVarious organisms with a protist-level organization were originally treated as fungi, because they produce sporangia, structures producing and containing spores. Many of these organisms were also treated as fungi due to a similar environmental role: that of a decomposer.
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41.1B: Transport of Electrolytes across Cell Membranes - Biology

Ions cannot diffuse passively through membranes; instead, their concentrations are regulated by facilitated diffusion and active transport.Learning ObjectivesExplain the relationship between osmotic pressure and the transport of electrolytes across cell membranesKey PointsImportant ions cannot pass through membranes by passive diffusion; if they could, maintaining specific concentrations of ions would be impossible.
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