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16 Cards in this Set
- Front
- Back
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Enzyme: what is the definition of an enzyme? |
proteins that enhance the rate of chemical rxns |
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Enzyme: how are they named? |
enzymes are named based on the compounds that they react on o. the rxns they catalyze |
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Enzyme: why are they important? |
enzymes are important because they enable important rxns to happen such as digesting proteins |
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Enzyme: where are enzymes made? |
enzymes are made in the ribosome |
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Enzyme: what is the Lock-and-Key model? how does this model work? |
a model that uses the analogy of a lock in a key to explain the action of a substrate with a single enzyme by binding to the active site of the enzyme causing a chain reaction culminating in the production of products |
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Enzyme: what is the induced fit? how does this model work? |
a model that uses the assumption that the enzyme is partially flexible to explain the evidence that the Lock-and-Key model does not work for. This occurs by the substrate entering the enzyme and the enzyme morphing around the substrate. |
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Enzyme: what is a substrate? |
a molecule upon which the enzyme reacts |
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Enzyme: what is an active site? |
the specific area of the enzyme which combines with the substrate |
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Coenzyme: what are their functions? |
help catalyze rxns ... ARE NOT SUBSTRATES |
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Coenzyme: three different types of coenzymes? |
B1, B2, and B6 |
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Coenzymes: foods that are sources of coenzymes? |
whole grains, green vegetables, meat, poultry, and fish |
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Digestive system: what enzyme is found in saliva that breaks down starches? |
salivary amylase |
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Digestive system: what enzyme is found in saliva that breaks down proteins? |
pepsin |
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Digestive system: what enzyme is found in saliva that break down lipids? |
lipase |
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Digestive system: how does the stomach mix bolus? |
by mixing and grinding the bolus |
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Digestive system: how does the pancreas, liver, and gallbladder assist in the breakdown of food in the duodenum? |
pancreas - secretes enzymes into the small intestine
liver - makes and secretes bile
gall bladder - stores bile |
