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