Homeostasis Vocabulary

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Trophic Cascade

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a phenomenon where a change in the population of one species (like a predator) has ripple effects on other species at different levels in a food web, often leading to changes in producer populations. *Think about what happened when the otter was removed!

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Genetic Drift

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a change in a variation due to a random occurrence (or “by chance”)

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Homeostasis

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stability or balance

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Carrying Capacity

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the total number of individuals within a population that a habitat can sustain

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Selectively

Permeable

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• the ability of the membrane to allow some substances to pass through while blocking the passage of others

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Limiting Factor

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specific set of conditions (biotic or abiotic) in an organism’s environment that determines where that organism can live or the size of their population

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pH

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acids-less than 7 on scale

bases-greater than 7

neutral- at 7

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Diffusion

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the movement of solutes (molecules like O2, CO2, Glucose) from an area with a high solute concentration to an area with a low solute concentration.

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Cellular Respiration

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Process where food molecules are broken down at the cellular level to create ATP. Takes place at the mitochondria.

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Photosynthesis

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Process carried out by producers where carbon dioxide, water and solar are energy are used to create glucose (food for the plant)