WorksheetsBiochemistry BIO A
Total questions: 68
Worksheet time: 53mins
Name
Class
Date
1.
The image below shows a polymer of glucose molecules. What type of macromolecule is this?
a)
carbohydrate
b)
protein
c)
lipid
d)
nucleic acid
2.
What type of macromolecule is shown in the image below?
a)
Carbohydrate
b)
Nucleic Acid
c)
Fatty Acid
d)
Protein
3.
An unknown molecule contains a sugar and a phosphate group. It is likely what?
a)
carbohydrate
b)
protein
c)
lipid
d)
nucleic acid
4.
Larger polymers are formed when monomers are joined together by a _______ reaction.
a)
dehydration synthesis
b)
digestion
c)
hydrolysis
d)
redox
5.
What is the monomer of proteins?
a)
monosaccharides
b)
amino acids
c)
phospholipids
d)
nucleotide
6.
What is the ratio carbon:hydrogen:oxygen in carbohydrates?
a)
1:1:1
b)
1:2:1
c)
2:1:1
d)
2:1:2
7.
Which of the macromolecules contain nitrogen?
a)
proteins only
b)
nucleic acids only
c)
proteins and lipids
d)
nucleic acids and proteins
8.
What is the function of fats for living organisms?
a)
short term energy storage
b)
store hereditary information
c)
long term energy storage
d)
catalyze metabolic reactions
9.
Identify the macromolecule in the image below.
a)
carbohydrate
b)
nucleic acid
c)
protein
d)
lipid
10.
The image depicts which level of structure in proteins?
a)
primary
b)
secondary
c)
tertiary
d)
quaternary
11.
Which 4 elements make up most of all living matter?
a)
Carbon, Hydrogen, Nitrogen, Oxygen
b)
Carbon, Oxygen, Sodium, Potassium
c)
Carbon, Hydrogen, Calcium, Nitrogen
d)
Carbon, Oxygen, Nitrogen, Sulfur
12.
What elements are in lipids?
a)
Carbon, Hydrogen, Oxygen
b)
Carbon, Hydrogen, Oxygen, Nitrogen
c)
Carbon, Hydrogen, Oxygen, Nitrogen, Phosphate
d)
Carbon, Hydrogen, Nitrogen
13.
What is one job (function) of lipids?
a)
quick energy
b)
storing energy
c)
building muscle
d)
structure
14.
Which image shows the structure of lipids?
a)
A
b)
B
c)
C
d)
D
15.
Which type of lipids are liquid at room temperature?
a)
saturated
b)
unsaturated
c)
waxes
d)
monomers
16.
What elements are in nucleic acids?
a)
Carbon, Hydrogen, Oxygen
b)
Carbon, Hydrogen, Oxygen, Nitrogen
c)
Carbon, Hydrogen, Oxygen, Nitrogen, Phosphate
d)
Carbon, Hydrogen, Nitrogen
17.
What is the monomer of a nucleic acid?
a)
nucleic acid
b)
nucleotide
c)
RNA
d)
DNA
18.
What is the job (function) of DNA?
a)
stores genetic information
b)
helps make proteins
c)
controls cells
d)
sends chemical signals
19.
Which is NOT a part of a nucleotide?
a)
5-carbon sugar
b)
phosphate group
c)
amino group
d)
base
20.
Which process breaks down nucleic acids into nucleotides?
a)
monomers
b)
dehydration synthesis
c)
hydrolysis
d)
polymers
21.
The process of ______ adds one water molecule to break a bond.
a)
dehydration synthesis
b)
hydrolysis
22.
What is the polymer of carbohydrates?
a)
glucose
b)
amino acid
c)
peptide
d)
starch
23.
Taking away a water molecule _____ a bond.
a)
builds
b)
breaks
24.
Which is NOT a job of proteins in our bodies?
a)
building muscle
b)
transportation
c)
quick energy
d)
body structure
25.
Which is NOT a shape of proteins?
a)
chain
b)
twisted
c)
twisted and folded
d)
straight line
26.
What type of macromolecule is an enzyme?
a)
Carbohydrate
b)
Protein
c)
Lipid
d)
Nucleic Acid
27.
An enzyme is a biological __________.
a)
catalyst
b)
hormone
c)
activation energy
d)
substrate
28.
Enzymes speed up ____ by lowering ____.
a)
activation energy; chemical reactions
b)
chemical reactions; activation energy
29.
How do we know which enzymes pair with which substrates?
a)
color
b)
size
c)
shape
d)
temperature
30.
What does A show?
a)
enzyme
b)
substrate
c)
active site
d)
product
31.
What does E show?
a)
enzyme
b)
substrate
c)
active site
d)
product
32.
Which of these affects enzymes?
a)
water
b)
catalyst
c)
temperature
d)
denature
33.
What happens if an enzyme denatures?
a)
the enzyme dies
b)
the enzyme changes shape
c)
the enzyme reacts differently
d)
the enzyme falls apart
34.
Which is the monomer of carbohydrates?
a)
Starch
b)
Carbohydrate
c)
Hydrolysis
d)
Glucose
35.
Which is the other monomer of carbohydrates?
a)
monosaccharide
b)
disaccharide
c)
polysaccharide
36.
What is a common ending in the names of carbohydrates?
a)
-ase
b)
-tion
c)
-ette
d)
-ose
37.
Which is NOT example of a carbohydrate?
a)
beef
b)
noodles
c)
milk
d)
bread
38.
What two elements make up water?
a)
hydrogen and nitrogen
b)
oxygen and nitrogen
c)
carbon and hydrogen
d)
hydrogen and oxygen
39.
Enzymes speed up ____ by lowering ____.
a)
activation energy; chemical reactions
b)
chemical reactions; activation energy
40.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
41.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
42.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
43.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
44.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
45.
A change in pH can change the shape of a protein. How might a change in pH affect the function of an enzyme?
a)
A new enzyme may be required to speed up the reaction.
b)
The enzyme may no longer be able to function for the substrate as a catalyst.
c)
The enzyme and substrate may no longer fit together so the enzyme cannot speed up the reaction.
d)
All the other answers are correct.
46.
Which of these is FALSE?
a)
Enzymes can denature (change shape) when the temperature gets too high.
b)
Enzymes can only be used once in a chemical reaction.
c)
Extreme pH can denature enzymes.
d)
Enzymes speed up chemical reactions.
47.
Changes in pH and temperature can damage an enzymes active site. What is this called?
a)
reusable
b)
catalyst
c)
specific
d)
denature
48.
The graph shows the relative rates of action of four enzymes, A, B, C, and D. Which enzyme shows the greatest change in its rate of action with the least change in pH?
a)
enzyme A
b)
enzyme B
c)
enzyme C
d)
enzyme D
49.
The graph shows the relative rates of action of four enzymes, A, B, C, and D. Which two enzymes would function in a region of the human body having a neutral pH?
a)
enzyme A and B
b)
enzyme B and C
c)
enzyme C and D
d)
enzyme B and D
50.
Enzymes are proteins
a)
True
b)
False
51.
Enzymes are _____________ at the end of a reaction
a)
changed
b)
denatured
c)
unaltered
d)
inactive
52.
Enzymes have a optimum ph
a)
true
b)
false
53.
the enzyme amylase break down ?
a)
lactose
b)
glucose
c)
starch
d)
sucrose
54.
The ________________ fits into the active site.
a)
enzyme
b)
substrate
c)
product
55.
At the end of a reaction the molecules are called the products?
a)
true
b)
false
56.
The active site and the substrate have ______________ in common
a)
size
b)
colour
c)
shape
d)
smell
57.
The basic unit of structure and function for the body.
a)
cell
b)
atom
c)
organelle
d)
nucleus
58.
A structure made up of different types of tissue and performs a specific job.
a)
cells
b)
tissue
c)
organ
d)
organ system
59.
A group of similar cells that perform the same function.
a)
tissue
b)
organelle
c)
mass
d)
tendon
60.
A group of organs that work together to perform a major function is an organ
a)
system
b)
column
c)
bank
d)
stack
61.
2 or more different kinds of tissues that work together.
a)
cell
b)
tissue
c)
organ
d)
organ system
e)
organism
62.
A living thing that is made up of organ systems.
a)
cell
b)
tissue
c)
organ
d)
organ system
e)
organism
63.
The smallest unit of a living thing
a)
cell
b)
tissue
c)
organ
d)
organ system
e)
organism
64.
2 or more organs that work together.
a)
cell
b)
tissue
c)
organ
d)
organ system
e)
organism
65.
Groups of similar cells that work together.
a)
cell
b)
tissue
c)
organ
d)
organ system
e)
organism
66.
An organism that is made up of many cells is called:
a)
unicellular
b)
multicellular
c)
pluracellular
67.
Which is the correct order for levels of organization from simple to complex?
a)
cell, organ , tissue, organ system, organism
b)
organism, organ system, tissue, cell, organ
c)
cell, tissue, organ, organ system, organism
d)
organ, tissue, cell, organism, organ system
68.
Compounds that are composed of the same number and type of atoms but have them arranged in different ways are ___________.
a)
isomers
b)
isotopes
c)
polymers
d)
alkanes
100 %
