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homeostasis

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  • Define: POSITIVE FEEDBACK
    A positive feedback loop occurs in nature when the product of a reaction leads to an increase in that reaction.
  • Define feedback
    Feedback is defined as the information gained about a reaction to a product, which will allow the modification of the product.
  • ectotherms are also known by the name
    cold blooded animals
  • Why are the feedback loops important?
    Feedback loops are important because they allow living organisms to maintain homeostasis.
  • 2 examples of POSITIVE FEEDBACK
    Fruit Ripening, childbirth, blood clotting
  • 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)
  • Give two examples of mechanism that homeostasis controls
    temperature, pH, glucose, Hormones, salts, water, oxygen, carbon dioxide, etc
  • Give 2 examples of endotherms
    Birds and mammals
  • Define: POSITIVE FEEDBACK
    A positive feedback loop occurs in nature when the product of a reaction leads to an increase in that reaction.
  • 2 examples of NEGATIVE FEEDBACK
    Temperature regulation, blood pressure, osmoregulation
  • 2 examples of NEGATIVE FEEDBACK
    Temperature regulation, blood pressure, osmoregulation
  • Define: Endotherms
    organisms that produce most of their heat by metabolic reactions
  • Define: NEGATIVE FEEDBACK
    A negative feedback loop occurs in biology when the product of a reaction leads to a decrease in that reaction.
  • 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.
  • Give 3 examples of ectotherms
    amphibians, and most fish and invertebrates
  • ectotherms are also known by the name
    cold blooded animals
  • Define: Enzyme
    a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
  • endotherms are also known by the name
    warm 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)
  • True or False: Homeostasis means that conditions never change (static conditions)
    FALSE
  • Define: Ectotherms
    animals whose regulation of body temperature depends on external sources, such as sunlight or a heated rock surface.
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