AP BIOLOGY UNIT 3 TEST:
METABOLISM AND ENZYME
QUESTIONS WITH CORRECT
ANSWERS
Substrate concentration - ANSWER-As the substrate concentration increases, so
does the rate of reaction, until all of the active sites are bound and the rate of
reaction levels off because their active site engages and the enzyme is saturated
Optimum Temperature - ANSWER-The temperature at which an enzyme is most
active
- human enzymes= 35-40 degrees C
- body= 37 degrees C
What happens to the enzymes when there is heat temperature? - ANSWER-increase
beyong OT
- increased energy level of molecules disrupts bonds in enzyme and between
enzyme and substrates
- denaturation=lose 3D shape
What happens to the enzymes when there is cold temperature? - ANSWER-
decreases T
- molecules more slower
- decrease collisions between enzyme and substrate
How are enzymes and temperature different? - ANSWER-Different enzymes function
in different organisms in different environments
pH - ANSWER-adds or removes Hydrogens, distrupts bonds and 3D shape
- example: denatures protein
Optimal pH - ANSWER-pH at which an enzyme works best
-most human enzymes=pH6-8
-pepsin= stomach= pH 2-3
-trypsin= small intestines= pH 8
What is the flow of energy through life? - ANSWER-life is built on chemical reactions
Solar energy - ANSWER-energy that comes from the sun (ATP and organic
molecules)
Metablosim - ANSWER-the chemical processes that occur within a living organism in
order to maintain life.
What happens when forming bonds between molecules? - ANSWER-dehydration
synthesis, synthesis, anabolic reactions
METABOLISM AND ENZYME
QUESTIONS WITH CORRECT
ANSWERS
Substrate concentration - ANSWER-As the substrate concentration increases, so
does the rate of reaction, until all of the active sites are bound and the rate of
reaction levels off because their active site engages and the enzyme is saturated
Optimum Temperature - ANSWER-The temperature at which an enzyme is most
active
- human enzymes= 35-40 degrees C
- body= 37 degrees C
What happens to the enzymes when there is heat temperature? - ANSWER-increase
beyong OT
- increased energy level of molecules disrupts bonds in enzyme and between
enzyme and substrates
- denaturation=lose 3D shape
What happens to the enzymes when there is cold temperature? - ANSWER-
decreases T
- molecules more slower
- decrease collisions between enzyme and substrate
How are enzymes and temperature different? - ANSWER-Different enzymes function
in different organisms in different environments
pH - ANSWER-adds or removes Hydrogens, distrupts bonds and 3D shape
- example: denatures protein
Optimal pH - ANSWER-pH at which an enzyme works best
-most human enzymes=pH6-8
-pepsin= stomach= pH 2-3
-trypsin= small intestines= pH 8
What is the flow of energy through life? - ANSWER-life is built on chemical reactions
Solar energy - ANSWER-energy that comes from the sun (ATP and organic
molecules)
Metablosim - ANSWER-the chemical processes that occur within a living organism in
order to maintain life.
What happens when forming bonds between molecules? - ANSWER-dehydration
synthesis, synthesis, anabolic reactions
