WorksheetsU2P3 Kozian Enzymes
Total questions: 18
Worksheet time: 29mins
Name
Class
Date
1.
What is an Enzyme?
a)
energy needed to get a reaction started
b)
Large compound formed from combinations of many monomers
c)
proteins that act as biological catalyst
d)
an organic compound
2.
What is a Cataylst?
a)
A substance that speeds up a rate of chemical reaction.
b)
Molecules that make enzymes work harder and faster
c)
reaction of an enzyme
d)
A substance that slows down a rate of chemical reaction.
3.
Enzymes are usually....
a)
Protiens
b)
Lipids
c)
Carbohydrates
d)
None of the Above
4.
What is the primary role of enzymes inside of living cells?
a)
organizing the translation of proteins
b)
allowing cells to be motile
c)
absorbing ultraviolet rays
d)
speeding up chemical reactions
5.
Enzymes are a form of which biomolecule?
a)
carbohydrates
b)
proteins
c)
nucleic acids
d)
lipids
6.
Enzymes are able to speed up chemical reactions because they -
a)
increase the temperature inside the cell
b)
reduce the friction between the reactants
c)
make the raw materials more chemically reactive
d)
lower the activation energy of the reaction
7.
Which of the 4 macromolecules are enzymes an example of?
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
8.
Which is NOT true?
a)
Enzymes speed up chemical reactions
b)
Enzymes react best at a specific temperature
c)
Enzymes only control ONE type of reaction
d)
Enzymes are made of lipids
9.
The name of the reactant that fits into the active site of a specific enzyme is called a(n) ____.
a)
electron
b)
atom
c)
catalase
d)
substrate
10.
What do enzymes do?
a)
create reactants
b)
increase activation energy
c)
speed up reactions
d)
break down other enzymes
11.
Which substrate would this enzyme catalyze (break down/process)?
a)
Δ
b)
σ
c)
∅
d)
μ
12.
Enzymes will make a reaction go _______ and use ______ energy.
a)
faster, less
b)
faster, more
c)
slower, less
d)
slower, more
13.
Cells can produce over one thousand different enzymes at a time. Enzymes are critical to the metabolism of these cells, but why are so many different enzymes needed?
a)
Cells are completely unable to control what enzymes
they produce
they produce
b)
The variety of enzymes prevents their actions from being inhibited.
c)
The active site of an enzyme can only bind to a specific substrate.
d)
The products of a reaction are always converted into new enzymes.
14.
Enzymes influence chemical reactions in living systems by:
a)
Providing the substrate required for the reaction to occur.
b)
Affecting the rate at which reactions occur.
c)
Absorbing water released when polymers are formed.
d)
Combining with excess hydrogen to from gaseous wastes.
15.
The "lock and key hypothesis" attempts to explain which of the following?
a)
Vacuole formation
b)
Pinocytosis
c)
Sharing of electrons
d)
Enzyme are specific to a substrate
16.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
17.
Based on the graph, what temperature does this enzyme work best?
a)
15 C
b)
40 C
c)
30 C
18.
Which line represents an enzyme-catalyzed (driven) reaction?
a)
Line 1
b)
Line 2
100 %
