Quiz 5 Enzymes (Unit 2)
A + B
( Substrate + Enzyme)
C-D-E
(Enzyme - Products) (COMPLEX)
A-B-C
(Enzyme - Substrate) (COMPLEX)
C + D + E
(Products + Enzyme)
calcium, vitamins, copper, cobalt, iron, zinc
(Select all that apply.) Choose enzyme cofactors mentioned in the lesson.
Substrate
A compound which is involved in a chemical reaction and is chemically changed by the reaction.
1.5 between 7 and 8
A digestive enzyme in stomach Juices has an optimal pH of __________ other enzyme have an optimal pH __________________.
catalyst
A substance which accelerates any chemical reaction but is not consumed by the reaction is called a
protein
An enzyme is a large _________ molecule.
a biological catalyst
An enzyme is:
True
An enzyme may react with several substrate chemicals simultaneously.
Cofactor
An inorganic metal or small organic molecule which attaches to the protein portion of the enzyme and plays an important role in activating that enzyme.
False
An organism can live without enzymes.
iron, copper, cobalt, zinc, calcium, and vitamins
Cofactors are often vitamins or metallic ions such as,
DNA RNA
Direction of the _________ through the ________
are produced at the direction and translation of DNA and RNA respectively
Enzymes:
100s
Giant enzyme molecule composes of ________ amino acids.
they may not be able to react
If the reactants found in a cell are removed from the cell how will they behave chemically?
A or B
In the figure illustrating the typical enzyme reaction, which is a substrate reactant?
substrate
Involved in a chemical reaction and is chemically changed by the reaction
True
Numerous different enzymes are produced by the cells.
cofactor
Often enzymes require a _________ in order for them to function as a catalyst.
Active site
The region on the surface of an enzyme molecule where the substrate molecule binds and reacts with the enzyme.
active site
The region where the substrate molecule binds and reacts with the enzyme
substrate
The substance on which the enzyme acts is called the __________ chemical.
to act as a catalyst in chemical reactions.
Why are enzymes necessary?
Enzyme
an enzyme is a large protein. It helps speed up biochemical processes in the body. Without them these processes would occur too slowly for us to live.
cofactor
plays an important role in activating that enzyme