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homeostasis

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  • Define feedback
    Feedback is defined as the information gained about a reaction to a product, which will allow the modification of the product.
  • Define: POSITIVE FEEDBACK
    A positive feedback loop occurs in nature when the product of a reaction leads to an increase in that reaction.
  • ectotherms are also known by the name
    cold blooded animals
  • Define: Homeostasis
    homeostasis is describe as the ability of an organism to maintain its internal environment (within the narrow limits that allow optimal cell functioning)
  • 2 examples of POSITIVE FEEDBACK
    Fruit Ripening, childbirth, blood clotting
  • Define: POSITIVE FEEDBACK
    A positive feedback loop occurs in nature when the product of a reaction leads to an increase in that reaction.
  • Give two examples of mechanism that homeostasis controls
    temperature, pH, glucose, Hormones, salts, water, oxygen, carbon dioxide, etc
  • Define: Enzyme
    a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
  • Define: Ectotherms
    animals whose regulation of body temperature depends on external sources, such as sunlight or a heated rock surface.
  • ectotherms are also known by the name
    cold blooded animals
  • What happens to the cells and enzymes if the homeostasis is not maintained?
    emzymes can be disrupted by an environment that is too salty, too acidic, too basic, or too hot.
  • endotherms are also known by the name
    warm blooded animals
  • 2 examples of NEGATIVE FEEDBACK
    Temperature regulation, blood pressure, osmoregulation
  • Define: Homeostasis
    homeostasis is describe as the ability of an organism to maintain its internal environment (within the narrow limits that allow optimal cell functioning)
  • Define: NEGATIVE FEEDBACK
    A negative feedback loop occurs in biology when the product of a reaction leads to a decrease in that reaction.
  • True or False: Homeostasis means that conditions never change (static conditions)
    FALSE
  • 2 examples of NEGATIVE FEEDBACK
    Temperature regulation, blood pressure, osmoregulation
  • Give 3 examples of ectotherms
    amphibians, and most fish and invertebrates
  • Give 2 examples of endotherms
    Birds and mammals
  • Why are the feedback loops important?
    Feedback loops are important because they allow living organisms to maintain homeostasis.
  • Define: Endotherms
    organisms that produce most of their heat by metabolic reactions
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