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17 questions
The amount of energy needed to make a chemical reaction start:
deactivation energy
activation energy
start-up energy
reaction energy
A reactant is:
the substance that is changed during a reaction
the substance that is made by a chemical reaction
Enzymes are:
carbohydrates
lipids
proteins
nucleic acids
Catalysts ______ chemical reactions.
speed up
slow down
Denaturation:
helps the enzyme by speeding it up
destroys the enzyme by deforming it
Enzymes ______ the activation energy needed to start a chemical reaction.
raise
lower
The active site is represented by letter
A
B
C
The substrate is represented by letter
A
B
C
The enzyme is represented by letter
A
B
C
The molecules that are made in a chemical reaction are called
reactants
products
During a chemical reaction, molecular bonds are either broken or formed.
true
false
The ATP cycle produces energy when a phosphate molecule is _____.
attached
broken off
Adenine is represented by which shape
Rectangle
Pentagon (5 sides)
circles
Ribose is represented by which shape
Rectangle
Pentagon (5 sided shape)
Circles
Phosphate groups are represented by which colored shape
Rectangle
Pentagon (5 sided shape)
Circles
Which molecule does your body break down first for energy?
nucleic acids
proteins
carbohydrates
lipids
Where is the energy stored in an ATP molecule?
Adenine bonds
Phosphate bonds
Ribose sugar
no energy
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