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Related Concept Videos

Facilitated Transport01:19

Facilitated Transport

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The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In  facilitated transport, also known as facilitated diffusion, molecules and ions travel across a...
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The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In  facilitated transport, also known as facilitated diffusion, molecules and ions travel across a...
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Adolescents from ethnic minority backgrounds face a multifaceted journey in forming their identities, shaped by the intersections of cultural expectations and personal exploration. For these adolescents, identity formation involves not only typical developmental challenges but also navigating the perceptions and attitudes of the majority culture. As they grow, adolescents in ethnic minority groups often become increasingly aware of stereotypes, social biases, and discrimination, all of which...
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Not all intergroup interactions lead to negative outcomes. Sometimes, being in a group situation can improve performance. Social facilitation occurs when an individual performs better when an audience is watching than when the individual performs the behavior alone. This typically occurs when people are performing a task for which they are skilled.
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Facilitated Diffusion01:16

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The plasma membrane, a critical structure in cellular biology, houses an array of transporters, or carrier proteins, interspersed within its lipid bilayer. These proteins play a crucial role in solute transport through facilitated diffusion, a form of passive diffusion that uses transporters to move the molecules across the membrane.
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Updated: Jan 26, 2026

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Larger Area Facilitates Richness-Function Effects in Experimental Microcosms.

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    This summary is machine-generated.

    Larger areas support more species, including rare ones, leading to greater ecosystem function. This highlights the importance of preserving large habitats for biodiversity and ecosystem services.

    Keywords:
    biodiversity ecosystem functioncomplementaritymacroecologyreserve sizesize structurespecies-area relationship

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    Area of Science:

    • Community ecology
    • Biodiversity research
    • Ecosystem science

    Background:

    • Species-area relationships (SAR) and biodiversity-ecosystem function (BEF) are key ecological patterns.
    • These patterns are often studied separately, despite shared links to community assembly mechanisms.

    Purpose of the Study:

    • To experimentally link species-area relationships with biodiversity-ecosystem function.
    • To investigate community assembly mechanisms driving these relationships in larger areas.

    Main Methods:

    • Created experimental species-area relationships in microcosm communities.
    • Assessed species richness, persistence of rare/large/high-biomass species, and functional diversity.
    • Quantified ecosystem function in relation to area size.

    Main Results:

    • Greater species richness in larger areas correlated with enhanced ecosystem function.
    • Larger microcosms supported more rare species across a wider range of body sizes.
    • Increased functional diversity was observed in larger areas.

    Conclusions:

    • The addition of niche space in larger areas supports rare species, driving increases in species richness and ecosystem function.
    • Preserving large areas is crucial for maintaining biodiversity and maximizing ecosystem services.