NEW
Font size
S
M
L
XL
WorksheetsEnzyme Introduction
Total questions: 9
Worksheet time: 7mins
Name
Class
Date
1.
What is the energy needed to start an chemical reaction referred to?
a)
Cascading Energy
b)
Potential Energy
c)
Kinetic Energy
d)
Activation energy
2.
Enzymes are
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
3.
What is the function of an enzyme?
a)
enzymes break themselves into small pieces
b)
they slow down chemical reactions
c)
they speed up chemical reactions
d)
enzymes combine products to form reactants
4.
Based on their role in the cell, enzymes can also be classified as –
a)
inhibitors
b)
catalysts
c)
hormones
d)
vitamins
5.
Some bacteria contain a substance called nitrogenase. Nitrogenase catalyzes the chemical reaction that converts atmospheric nitrogen (N2) into ammonia (NH3). Nitrogenase is an example of which of the following?
a)
a sugar
b)
a nucleotide
c)
an enzyme
d)
an amino acid
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.
Enzymes will make a reaction go _______ and use ______ energy.
a)
faster, less
b)
faster, more
c)
slower, less
d)
slower, more
8.
lowers the activation energy in a reaction
a)
activation energy
b)
activation site
c)
catalyst
d)
surroundin
9.
A catalyst is a reactant in an equation
a)
True
b)
False
Reset
