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Enzymes and digestion ~
Notes taken on Enzymes and digestion in Honors biology
35
Biology
9th Grade
11/05/2011

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Term
Define substrate
Definition
the molecule upon which an enzyme acts on
Term
define product
Definition
a nutrient that is usable by cells (building block)
Term
How do enzymes speed up chemical reactions?
Definition
by lowering the energy/heat needed to get it started
Term
Where is amylase produced?
Definition
in saliva and by your pancreas
Term
Where does the pancreas send the enzyme it produces?
Definition
to the small intestine
Term
What does amylase break down, and into what new molecules?
Definition
breaks down starch (polysaccharide) into maltose (disaccharide)
Term
What reaction does amylase speed up?
Definition
hydrolysis
Term
What enzyme breaks down maltose into glucose molecules?
Definition
maltase
Term
Where is maltase found?
Definition
in the small intestine
Term
Where is lipase produced?
Definition
in the small intestine
Term
What is known as the "backbone" of triglycerides?
Definition
glycerol
Term
What does lipase break down?
Definition
lipids
Term
What are triglycerides broken down into?
Definition
3 fatty acids and one glycerol
Term
Where is bile made?
Definition
in the liver
Term
where is bile stored?
Definition
in the gall bladder
Term
What is the duodenum?
Definition
the first part of the small intestine where most digestion takes place
Term
where is pepsin produced?
Definition
in the stomach
Term
What does pepsin break down?
Definition
proteins
Term
What is protein broken down into?
Definition
small peptides and amino acids
Term
Where is trypsin found?
Definition
in the duodenum
Term
What is peptidase also known as?
Definition
protease
Term
Where is peptidase found?
Definition
in the small intestine
Term
what is peristalsis?
Definition
the powerful contractions of the muscles in the stomach, esophagus, and intestines to keep food moving
Term
how long does food usually remain in the stomach?
Definition
3 to 4 hours
Term
Where are nutrients absorbed into the bloodstream?
Definition
in the small intestine
Term
What is the main function of the large intestine?
Definition
removing water from waste
Term
What is another name for gelatin?
Definition
animal collagen
Term
define active site
Definition
the part of the enzyme's surface where the substrate is bound and undergoes reaction
Term
define specificity
Definition
how specific the enzyme is for what substrate it will act upon
Term
define cleft
Definition
the region into which the substrate molecule is drawn
Term
define catabolic reaction
Definition
a reaction where chemical bonds are broken and the substrate molecule breaks into 2 separate molecules, and is caused by enzymes
Term
define anabolic reaction
Definition
a reaction where chemical bonds are formed and 2 substrate molecules become a single molecule
Term
are catabolic reactions exergonic or endergonic?
Definition
exergonic
Term
are anabolic reactions exergonic or endergonic?
Definition
endergonic
Term
What type of reaction are digestion and cellular respiration?
Definition
catabolic reactions
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