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Biochemistry

Total questions: 102

Worksheet time: 3hrs 31mins

Name
Class
Date
1.

Enzymes are what type of biomolecule?

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

2.

What is the largest level of organization?

(a)  

3.

What level of organization goes between the following:
... organ system, organism, (a)   , community...

4.

If you saw saturated fats on a nutrition label, what type of biomolecule would that be?

a)

carbohydrates

b)

lipids

c)

proteins

d)

nucleic acids

5.

What type of biomolecule is in this image?

a)

carbohydrates

b)

lipids

c)

proteins

d)

nucleic acids

6.

Which of these is the smallest level of organization present?

a)

organism

b)

organ

c)

organ system

d)

organelle

7.

Which is the smallest of all levels of organization?

(a)  

8.

B is known as the reactant. It is also called the what?

a)

active site

b)

substrate

c)

enzyme

d)

products

9.

C, the spot where the substrate fits in perfectly, is called what?

a)

active site

b)

substrate

c)

enzyme-substrate complex

d)

product

10.

A is called the what?

a)

enzyme

b)

activation energy

c)

enzyme-substrate complex

d)

substrate

11.

D in this image is the what?

a)

enzyme

b)

reactant

c)

substrate

d)

product

12.

E in this image is the what?

a)

enzyme

b)

reactant

c)

substrate

d)

product

13.

Which gives you more calories (energy) per gram?

a)

carbohydrates

b)

lipids

c)

sugar

d)

starch

14.

Which is NOT a function of nucleic acids?

a)

store genetic information

b)

transmit genetic information

c)

make proteins

d)

growth and repair

15.

Proteins and carbohydrates both serve what function?

a)

structure

b)

transmit genetic information

c)

protective padding

d)

catalyze reactions

16.

Proteins serve which of the following functions? Select all correct answers.

a)

structure

b)

growth and repair

c)

fight infections

d)

catalyze reactions

17.

What does the term "saccharide" mean?

a)

fat

b)

sugar

c)

water

d)

enzyme

18.

What does the prefix "mono-" mean?

a)
Two
b)
Many
c)
One
d)
None
19.

What does the prefix "poly-" mean?

a)
Many
b)
One
c)
Two
d)
None
20.

Are enzymes consumed (used up) in chemical reactions?

a)

No, they can be reused

b)

Yes, they react less and less

c)

No, but they lose effectiveness

d)

Yes, they're used once and never again

21.

What is the monomer (building block) of carbohydrates?

a)

monosaccharide

b)

amino acid

c)

nucleotide

d)

fatty acids

22.

Which of these are the building blocks of lipids?

a)

amino acid

b)

nucleotide

c)

glycerols

d)

fatty acids

23.

The monomer (building block) of proteins is called?

a)
Nucleotide
b)
Fatty acid
c)
Amino acid
d)
Glucose
24.

What is the building block of nucleic acids called?

a)
Amino acids
b)
Fatty acids
c)
Proteins
d)
Nucleotides
25.

Which of the following are examples of lipids?

a)

fats

b)

steroids

c)

sugar

d)

enzymes

26.

Which of these is NOT a carbohydrate?

a)
Glucose
b)

Cellulose

c)

Amylase

d)
Sucrose
27.

If a word ends with the suffix "-ase" it's probably a(n)...?

a)

steroid

b)

hormone

c)

sugar

d)

enzyme

28.

What element is NOT found in lipids?

a)

Carbon

b)

Hydrogen

c)

Oxygen

d)

Cobalt

29.

What are the elements in nucleic acids?

a)

CHO

b)

CHONP

c)

CHONS

d)

CHO 1:2:1

30.

Aside from carbon (C), hydrogen (H) and oxygen (O), what other element(s) can you find in proteins?

(a)  

31.

Which biomolecule is NOT found on nutrition labels?

a)

carbohydrates

b)

lipids

c)

proteins

d)

nucleic acids

32.

What type of biomolecule are fats?

a)

carbohydrates

b)

lipids

c)

proteins

d)

nucleic acids

33.

What kind of biomolecule is lactose?

a)

carbohydrates

b)

lipids

c)

proteins

d)

nucleic acids

34.

Calories are a measure of how much (a)   a food will give you.

35.

Sodium is an electrolyte needed for which of the following?

a)

Muscle contractions

b)

Nerve impulses

c)

Balancing water levels

d)

Breathing

36.

Match each of the following substances to the correct biomolecule

a)

RNA

1.

Nucleic Acids

b)

Cellulose

2.

Carbohydrates

c)

Steroids

3.

Lipids

d)

Enzymes

4.

Proteins

e)

Hormones

5.

Lipids

37.

Which group of organic compounds contains fatty acids?

a)
Carbohydrates
b)
Lipids
c)
Nucleic Acids
d)
Proteins
38.

What do disaccharides such as sucrose, and polysaccharides such as starch, have in common?

a)
They are lipids made of fatty acids.
b)
They are proteins made of amino acids.
c)
They are nucleic acids made of nucleotides.
d)
They are carbohydrates made of simple sugars.
39.

Which of the following answers links a biomolecule with one of its proper functions?

a)
Lipids - Store genetic information
b)
Carbohydrates - short term energy storage
c)
Nucleic Acids - Catalyze reactions
d)
Proteins - long term energy storage
40.
The molecule in the diagram plays what role in the body?
a)
Releasing Energy
b)

Storing instructions for proteins

c)
Storing Fat
d)
Controlling blood glucose levels
41.
This diagram shows the molecular structure of glucose.

Simple sugars like glucose can be used to make larger organic molecules. Identify a larger molecule made from simple sugars.
a)

Starch

b)

Hormones

c)

Triglyceride

d)

DNA

42.

Which organic macromolecules are composed of chains of amino acids that join to form the structural components of organisms.

a)
Carbohydrates
b)
Proteins
c)
Amino Acids
d)
Lipids
43.

The monomers used to synthesize proteins are called:

a)
Nucleotides
b)
Fatty Acids
c)
Amino Acids
d)
Sugars
44.
Which biomolecule is this a picture of?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
45.
Which biomolecule is this a picture of?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
46.

Which biomolecule contains fats, oils, steroids and waxes?

a)
Proteins
b)
Nucleic Acid
c)
Lipids
d)
Carbohydrate
47.
Which biomolecule is this a picture of?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
48.
Which biomolecule is this a picture of?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
49.

Which biomolecule is made of nucleotides and forms your DNA?

a)
Carbohydrate
b)
Lipids
c)
Protein
d)
Nucleic Acid
50.

Which biomolecule helps form muscles?

a)

Nucleic Acid

b)

Carbohydrate

c)

Protein

d)

Lipids

51.
Which biomolecule is responsible for insulation and energy storage?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
52.
What do monomers do?
a)

Bond to make a polymer

b)

Create proteins

c)

Store energy

d)

Split to make more cells

53.

Which is the monomer for carbohydrates?

a)

Glycerol

b)
Amino acids
c)

Monosaccharide

d)
Nucleotide
54.
What elements are common to all 4 biomolecules?
a)

Carbon, Hydrogen, Nitrogen

b)
Carbon, Nitrogen, Phosphorus
c)
Carbon, Hydrogen, Oxygen
d)
Carbon, Hydrogen, Phosphorus
55.

Which of the following is the highest level of organization within the environment?

a)

population

b)

organism

c)

ecosystem

d)

biosphere

56.

Reorder the following from least to greatest (from left to right).

a)

organism

b)

population

c)

community

d)

ecosystem

e)

biome

1)
2)
3)
4)
5)
57.

What level of ecological organization does the bird represent?

a)

Organism

b)

Population

c)

Community

d)

Ecosystem

58.

What level of ecological organization do all the organisms, water, air, rocks and sunlight represent?

a)

Organism

b)

Population

c)

Community

d)

Ecosystem

59.

What level of ecological organization do all the organisms in this photo represent?

a)

Species

b)

Population

c)

Community

d)

Ecosystem

60.

​ ​ (a)   - Organisms that have similar features and can reproduce.

​ (b)   - A group of the same species that live in a certain area.

​ (c)   -  A combination of all the different species that live and interact in the same environment

​ (d)   - All the living and non-living things that interact in one specific part of the environment.

Choose from the below words
Species
Population
Community
Ecosystem
61.

Drag the level labels to the correct level.

a)

Biome

b)

Organism

c)

Population

d)

Ecosystem

e)

Community

1
2
3
4
5
1)
2)
3)
4)
5)
62.

All the alligators in a swamp are an example of a(n) _______________.

a)

organism

b)

community

c)

population

d)

group

63.

A group of only one type of organism is a

a)

Population

b)

Community

c)

Ecosystem

d)

Niche

64.

Is this an example of a population or community?

a)

Population

b)

Community

65.

Is this an example of a population or community?

a)

Population

b)

Community

66.

The living and nonliving things in an environment and all the interactions

a)

population

b)

food chain

c)

ecosystem

d)

community

67.

A group of cells that have similar functions? Examples are nervous, epithelial, muscle and connective

a)

cell

b)

tissue

c)

organ

d)

organ system

68.

A group of tissues that perform a similar function is called_____. (Examples include the heart, lungs or stomach)

a)

cells

b)

tissues

c)

organs

d)

organ systems

69.

Made up of organelles. Known as the building blocks of life.

a)

organ

b)

organ system

c)

cell

d)

tissue

70.

What is the smallest unit of an element that has the properties of that element

a)

atom

b)

compound

c)

homogeneous mixture

d)

heterogeneous mixture

71.

An ecosystem is composed of both biotic (living) and abiotic (non-living) factors.

a)

True

b)

False

72.

Biotic includes all the following except:

a)
Plants
b)
Microrganism
c)
Sunlight
d)
Humans
73.

The Earth's crust is also known as a(n):

a)

Biome

b)

Ecosystem

c)
Biosphere 
d)

Atom

74.

Which organic molecule would a long-distance runner most likely choose to eat two hours before a race?

a)

A protein, because it builds muscle mass.

b)

A lipid because it provides long term energy storage.

c)

A carbohydrate because it releases energy quickly.

d)

A protein, because it transports oxygen into the blood stream.

75.

How are the functions of a carbohydrate and a lipid similar?

a)

Both are a source of energy.

b)

Both are replicated during meiosis.

c)

Both lower the activation energy of reactions.

d)

Both dissolve nutrients in the digestive system.

76.

Why is the “lock and key” analogy often used to describe enzyme function?

a)

Each enzyme is the same as its substrate.

b)

Each enzyme will fit with only one specific kind of substrate.

c)

Each enzyme can only be used once in a reaction and cannot be used again.

d)

Each enzyme has its own active site that will not fit with other active sites.

77.

What are the two factors that would cause an enzyme to denature?

a)

Substrates and products

b)

Proteins and fats

c)

Extreme pH and temperatures

d)

Lemons and Kiwis

78.
What is the purpose  of an enzyme?
a)
give permission for the reaction
b)
raise activation energy
c)
speed up reactions
d)
control how many reactions occur
79.
Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?
a)
reducing the number of products   
b)
reducing the activation energy
c)
increasing the temperature of the cell
d)
increasing the concentration of reactants 
80.
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 .
81.

Which enzyme would most likely function well in the stomach?

a)

Chymotrypsin

b)

Cholinesterase

c)

Pepsin

d)

Papain

82.
In the diagram, what is letter A? 
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
83.
Letter C...
a)
active site
b)
enzymes
c)
substrate
d)
products
84.
Letter E...
a)
active site
b)
enzyme
c)
substrate
d)
products
85.
What is the optimum temperature at which this enzyme works best?
a)
0 C
b)
20 C
c)
40 C
d)
62 C
86.
A student is doing a lab to extract the genetic material (DNA) from a cell. What biomolecule are they extracting?
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
87.
A molecule that blocks the active site and prevents the enzyme from functioning properly is called a/an
a)
Reactant
b)
Catalyst
c)
Active Site
d)
Inhibitor
88.

Some carbohydrates provide energy while others help provide structure for cells. According to the image, which type of carb is good for energy?

a)

Glycogen

b)

Cellulose

89.

Some carbohydrates provide energy while others help provide structure for cells. According to the image, which type of carb is good for providing structure?

a)

Glycogen

b)

Cellulose

90.
Carbon, Hydrogen, Oxygen and Nitrogen are elements in what biomolecule?
a)
Carbohydrate
b)
Lipid
c)
Protein
d)
Nucleic acid
91.
Which of the following is the correct order of organization in living things from most basic (simple) to most complex?
a)
a.  Organism, cell, tissue, organ, organ system
b)
a.  Organ system, organ, tissue, cell, organism
c)
a.  Cell, tissue, organ, organ system, organism
d)
a.  Cell, organ, tissue, organ, organism, organ system
92.
This is a example of........ 
a)
organ system
b)
cells
c)
organ
d)
tissue
93.
This is a example of ........
a)
cell
b)
organ system
c)
organ
d)
tissue
94.

Which diagram represents the most complex level of organization?

a)
b)
c)
d)
95.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
96.
Each enzyme only has 1 substrate that will fit its active site.  What is this called?
a)
reusablility
b)
denaturation
c)
specificity
d)
fragility
97.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
98.
What will most likely happen if an appropriate enzyme is added to a chemical reaction? 
a)
The reaction rate will increase.
b)
The equilibrium of the reaction will be maintained. 
c)
The reaction rate will decrease.
d)
The reaction will stop. 
99.
The diagram below illustrates a biochemical process that occurs in organisms. What is another name for the substance labeled "catalyst"?
a)
Enzyme
b)
inorganic compound
c)
Hormone
d)
Antibody
100.
The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?
a)
Enzymes increase the energy of the reactants.
b)
Enzymes decrease the energy level of the products.
c)
Enzyme decrease the activation energy of the reaction.
d)
Enzymes reverse the direction of the reaction.
101.

Which enzyme functions most efficiently in an alkaline/basic (pH of 8 or higher) solution?

a)
A
b)
B
102.
What happens when enzymes are heated to a high temperature?
a)
The enzymes die.
b)

The enzyme is denatured - its shape changes.

c)
The enzymes' amino acid sequence changes.
d)

The enzymes remain the same.

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