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Total questions: 137

Worksheet time: 1hrs 29mins

Name
Class
Date
1.

The molecule on which an enzyme acts is called a(n) _________.

a)

active site.

b)

inactive site.

c)

polar molecule.

d)

substrate.

2.

ATP (adenosine triphosphate) stores energy in the bonds between its

a)

hydrogen atoms.

b)

nucleotides.

c)

carbon atoms.

d)

phosphate groups.

3.

The two types of nucleic acids are _____________________.

a)

RNA and ATP.

b)

DNA and ATP.

c)

DNA and RNA.

d)

nucleotides and ATP.

4.

Polysaccharides are _________________.

a)

carbohydrates.

b)

proteins.

c)

lipids.

d)

nucleic acids.

5.

Which of the following is not a large biomolecule?

a)

carbohydrate

b)

lipid

c)

Amino acid

d)

nucleic acid

6.

When is the enzyme denatured?

a)

pH 1 and 13

b)

pH 6 to 8

c)

pH 7

d)

pH 1 only

7.

Which diagram represents the enzyme for this reaction?

a)
b)
c)
d)
8.

The diagram represents enzyme reaction. What are the parts W, X and Y in this chemical reaction?

a)

W - enzyme Y - substrate

b)

X - enzyme Y - substrate

c)

X - enzyme W - substrate

d)

Y - enzyme X - substrate

9.

Which graph shows the effect of temperature on the activity of an enzyme?

a)
b)
c)
d)
10.

Which process in cells will proceed normally whether oxygen (O2) is present or absent?

a)

Aerobic respiration

b)

Glycolysis

c)

Photosynthesis

d)

Krebs Cycle

11.

The gas released in this investigation is

a)

carbon dioxide.

b)

hydrogen.

c)

nitrogen.

d)

oxygen.

12.

Elements that makes up the lipids

a)

carbon, hydrogen and oxygen

b)

carbon, nitrogen ,hydrogen and oxygen

c)

carbon and hydrogen

d)

carbon, hydrogen, phosphorus and oxygen

13.

Monosaccharides are monomers of

a)

Lipids

b)

Nucleic Acids

c)

Proteins

d)

Carbohydrates

14.

This is an example of what macromolecule?

a)

Lipids

b)

Nucleic Acid

c)

Carbohydrate

d)

Lipid

15.

The main function of a carbohydrate is

a)

stores genetic information

b)

energy storage

c)

regulates and controls all body proccesses

16.

Carbohydrates are made of what elements?

a)

CHO

b)

CHON

c)

CHONP

d)

CHONS

17.

All polymers are made up of...

a)

monosaccharides

b)

polysaccharides

c)

monomers

d)

none of these

18.

How many sugar units make up polysaccharides?

a)

one

b)

two

c)

more than two

d)

zero

19.
How many sugar units make up disaccharides?
a)
one
b)
two
c)
three
d)
zero
20.
How do the number of H atoms compare to the number of O atoms in a carbohydrate?
a)
There are TWICE as many H
b)
They are the same amount
c)
There are THREE times as many H
d)
There are TWICE as many O
21.
What type of carbohydrate is this?
a)
polysaccharide
b)
disaccharide
c)
monosaccharide
d)
it isn't a carbohydrate
22.
The process of removing water in order to form a bond between monomers is called....
a)
Dehydration Synthesis
b)
Hydrolysis
23.
The process of adding water in order to break bonds within a polymer....
a)
Dehydration Synthesis
b)
Hydrolysis
24.
The process of breaking the bonds within a starch molecule in order to release glucose molecules is called......
a)
Dehydration Synthesis
b)
Hydrolysis
25.
The process of digesting a polysaccharide into individual monosaccharides is called....
a)
Dehydration Synthesis
b)
Hydrolysis
26.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis
27.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis
28.
How many different amino acids are there?
a)
15
b)
20
c)
25
d)
30
29.
What is a protein: 
a)
A polymer composed of many sugars.
b)
A polymer composed of many amino acids. 
c)
A polymer composed of fatty acids. 
d)
A polymer composed of nucleotides. 
30.
The diagram shows the structure of an amino acid. Which type of molecule is formed from amino acids?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
31.
The structure of proteins can be changed by environmental factors such as temperature or pH.
a)
True
b)
False
32.
When a protein unfolds, it is
a)
Denatured
b)
Building
c)
Adding amino acids
d)
Making food
33.
What elements make up amino acids?
a)
Carbon, hydrogen and oxygen only
b)
Carbon, hydrogen, oxygen and nitrogen only
c)
Carbon, hydrogen and phosphorus only
d)
Carbon, hydrogen, nitrogen and oxygen; and sometimes also sulfur
34.

This is one job proteins do NOT have in the body

a)

insulation

b)

structure for tissues and organs

c)

speeds up chemical reactions

d)

transport things through cell membrane

35.

What is a long chain of amino acids called?

a)

Polysaccharide

b)

Lipid

c)

Carbohydrate

d)

Polypeptide

36.
Each amino acid is different from the other due to....
a)
The R group
b)
The amino group
c)
The carboxyl group
d)
The central carbon
37.
The diagram shows a bond forming between two amino acids. What is the name of this reaction?
a)
Dehydration Synthesis
b)
Hydrolysis
38.
The diagram shows the structure of an amino acid. Which type of molecule is formed from amino acids?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
39.

Antibodies protect the body from pathogens. What type of proteins are they considered?

a)

Transport

b)

Signaling

c)

Defense

d)

Contractile

40.

What is an example of protein denaturation?

a)

Inhaling oxygen and exhaling carbon dioxide

b)

Lifting weights

c)

Cooking an egg

d)

Injecting insulin

41.

Insulin

a)

controls how warm your blood is

b)

signals cells to take in glucose (sugar) to control blood sugar levels

c)

makes up your hair

42.

Most enzymes are what type of molecule?

a)

carbohydrate

b)

nucleic acids

c)

proteins

d)

lipids

43.
What type of fatty acid is this?
a)
Unsaturated
b)
Saturated
c)
Monounsaturated
44.
A biological polymer made of amino acid monomers is a 
a)
protein
b)
lipid
c)
carbohydrate
d)
nucleic acid
45.
A biological polymer that stores and transmits genetic information is a ...
a)
nucleic acid
b)
carbohydrate
c)
lipid
d)
protein
46.
What group of biological molecules contains DNA and RNA...
a)
Nucleic acids
b)
carbohydrates
c)
proteins
d)
lipids
47.
Carbohydrates broken down into smaller molecules for what purpose?
a)
to form cell membranes
b)
to form muscle
c)
to transmit genetic information
d)
to provide energy
48.
What are the monomers of a polysaccharides?
a)
Amino Acids
b)
Nucleotides
c)
Triglycerides
d)
Monosaccharides
49.
A large molecule made up of many similar or identical subunits.
a)
lipids
b)
polymer
c)
monomer
d)
monosaccharide
50.
Also known as simple sugars, these carbohydrate monomers.
a)
lipids
b)
nucleotide
c)
monosaccharide
d)
monomer
51.
Building blocks of polymers.
a)
monomer
b)
polypeptide
c)
monosaccharide
d)
glycerol
52.
Monomer of nucleic acids; consists of a phosphate group, deoxyribose (sugar), and a nitrogen-base. ATP is an example of this.
a)
steroid
b)
nucleotide
c)
polypeptide
d)
polymer
53.
A biological polymer that stores and transmits genetic information is a ...
a)
nucleic acid
b)
carbohydrate
c)
lipid
d)
protein
54.

Which of the following biological molecules contains the element nitrogen?

a)

carbhydrates

b)

proteins

c)

fats

d)

all of the above

55.

Which of the following is a good solvent in the body?

a)

fat

b)

protein

c)

carbohydrate

d)

water

56.

The diagrams represent the activity of an enzyme.

What of the following is correct?

a)

1 - enzyme

b)

2 - active site

c)

3 - substrate

d)

4 - enzyme

57.

The graph shows the effect of temperature on the digestion of starch.


At which temperature are starch molecules broken down most rapidly?

a)

10 °C

b)

30 °C

c)

40 °C

d)

50 °C

58.

Which statement is true for an enzyme?

a)

It absorbs the sun's energy during photosynthesis.

b)

It catalyses biological reactions.

c)

It is destroyed by temperatures below 20 °C.

d)

It slows down reactions in a cell.

59.

Water is a type of

a)

ionic compound

b)

polar covalent compound

c)

covalent compound

60.
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.
61.
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 .
62.

Changes in pH and temperature can ___________________ an enzyme which causes it to lose its shape and affects its function.

a)

puncture

b)

denature

c)

double

d)

delete

63.

What is the purpose of an enzyme?

a)

control how many reactions occur

b)

raise activation energy

c)

give permission for the reaction

d)

speed up chemical reactions

64.

After the enzyme and substrate bind together and perform the reaction, what does the substrate become?

a)

a substrate

b)

an active site

c)

an enzyme

d)

a product

65.

What is the optimal temperature of this enzyme?

a)

60

b)

40

c)

70

d)

30

66.

Which letter represents the product?

a)

A

b)

B

c)

C

d)

D

67.

Which enzyme represents the substrate?

a)

A

b)

B

c)

C

d)

D

68.

Which letter represents the enzyme?

a)

A

b)

B

c)

C

d)

D

69.
In which part of the cell does photosynthesis take place?
a)
vacuole
b)
mitochondria
c)
cell wall
d)
chloroplast
70.
What gas do producers need in order to perform photosynthesis?
a)
oxygen
b)
carbon dioxide
c)
hydrogen
d)
nitrogen
71.
What gas do producers give off as a result of photosynthesis?
a)
oxygen
b)
carbon dioxide
c)
hydrogen
d)
nitrogen
72.
What is the activation energy?
a)
The energy of the products
b)
The energy of the reactants
c)
The minimum energy needed by the reactants to form the products.
d)
The energy lost in the reaction
73.
What kind of reaction is this?
a)
Endothermic
b)
Exothermic
c)
Cannot be determined
74.

How does a catalyst work in speeding up a reaction?

a)

By lowering the activation energy or reaction

b)

by giving them more energy

c)

by making them more available

75.

What term is given to a reaction which transfers heat energy to the surroundings?

a)

Endothermic

b)

Reversible

c)

Exothermic

d)

Exotermic

76.
What letter represents the energy of the products?
a)
A
b)
B
c)
C
d)
D
77.
What type of reaction is this?
a)
Endothermic
b)
Exothermic
78.
In a water molecule the hydrogen and oxygen atoms hold together by sharing _________.
a)
protons 
b)
neutrons
c)
electrons
d)
nuclei
79.
Which end of the water molecule has a slightly positive charge?
a)
the oxygen end
b)
the hydrogen end
c)
both ends are slightly positive
d)
neither end is positive
80.
When a molecule has an opposite electrical charge on each end, it is known as what?
a)
cohesion
b)
polar molecule
c)
hydrogen bond
d)
solution
81.
When water molecules stick easily to other water molecules, this is called what?
a)
cohesion
b)
adhesion
c)
solution
d)
polar molecule
82.
Water molecules are attracted to other kinds of molecules because of the property.
a)
Cohesion
b)
Adhesion
c)
Surface Tension
d)
Universal Solvent
83.
Large bodies of water do not quickly fluctuate in temperature. Why?
a)
Water is a solvent.
b)
Water has a high heat capacity.
c)
Water acts as a buffer.
d)
Water is non-polar.
84.

All the members of one species living in the same area. (a)  

85.

The study of how organisms interact with each other and their environment. (a)  

86.

An environment that provides the things that a specific organism needs to live, grow and reproduce (a)  

87.

The role an organism has in its ecosystem.

(a)  

88.

The movement of individuals out of a population is called (a)   .

89.

Producers take in carbon dioxide gas from the air during the process of (a)   .

90.

The process of burning of fossil fuels releases stored carbon dioxide into the atmosphere is called (a)   .

91.

If conditions are not favorable for the process of decomposition it will not decomposed and instead form ___________ _________.

(a)  

92.

The ___________ is an animal that eats another. The _________ is an animal that is eaten by a predator. (Separate your answer with a comma)

(a)  

93.

(a)   competition occurs within same species.

94.

(a)   is an interaction between two species where the both benefit from each other.

95.

(a)   is a consumer that eats only animals

96.

(a)   is the position of organism in a food chain or food web.

97.

(a)   is the source of energy to cause the water vapor to evaporate to the atmosphere.

98.

Physical characteristics that allow organism to live successfully in their environment.

(a)  

99.

A type of adaptation when a harmless animal imitates a harmful or poisonous animal is called (a)   .

100.

(a)   is the number and variety of different species in an area.

101.

A (a)   species is an influential organism in the survival of many other species within the same ecosystem.

102.

(a)   species are those in danger of becoming extinct.

103.

Type of extinction that kills many different species at the same time is called __________ ______________. (2 words)

(a)  

104.

A nonliving part of an organism's habitat is called _____________ _____________.(2 words)

(a)  

105.

An environmental factor that causes a population to stop growing or decrease in size is called _____________ ____________. (2words)

(a)  

106.

(a)   is a process when producers and consumers break down the food to obtain energy, they release carbon dioxide and water into the environment.

107.

(a)   is the struggle between individuals or different populations for food, space, and nutrients.

108.

(a)   is a relationship between two species in which one species benefits while the species it depends on, its host, is harmed.

109.

(a)   is an organism that gets its energy requirements by consuming other organism.

110.

_________ ____________ shows a one way flow of energy through an ecosystem.

(a)  

111.

(a)   is change in a population over time.

112.

__________ ________________ is the process by which individuals that are better adapted to their environment are more likely to survive and reproduce more than other members of the same species.

(a)  

113.

(a)   fossils are most common type of fossil found across the world. They are formed from the remains of dead animals and plants

114.
What is the study of the interactions among organisms and  between organisms and their environments called?
a)
Biology
b)
Ecology
c)
Astronomy
d)
Biosphere
115.
The direction of the flow of energy in a food web is represented by ___.
a)
Light bulbs
b)
Dotted Lines
c)
Arrows
d)
Bubbles
116.
Which of these is an example of an autotroph?
a)
Sunflower
b)
Krill
c)
Leopard
d)
Hummingbird
117.
What does every food chain start with?
a)
producers
b)
sun
c)
consumer
d)
decomposers
118.
Consumer that eats plants
a)
heterotroph
b)
herbivore
c)
producer
d)
community
119.
Energy increases as you move up the food pyramid (from bottom to top).
a)
True 
b)
False
120.
Which of the following is NOT a consumer
a)
grass
b)
dog
c)
shark
d)
fish
121.
A connection of food chains with many food energy paths in an ecosystem is a ____________
a)
ecosystem
b)
food web
c)
environment
122.
A frog eats a fly. The frog and fly are demonstrating ________.
a)
mutualism
b)
competition
c)
predator/prey
d)
parasitism
123.
What percentage of energy is passed on to each tropic level?
a)
10%
b)
50%
c)
90%
d)
100%
124.
All energy on Earth ultimately comes from what source?
a)
Water
b)
Sun
c)
Consumers
d)
Oxygen
125.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
126.
An organism that uses sunlight to create its own food is known as a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
127.
What does a food chain represent?
a)
How all living organisms within a habitat are connected.
b)
All of the things that a particular animal eats.
c)
How plants create their own food.
d)
A single path of energy transfer within a habitat.
128.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
129.
Why might an organism have more than one arrow coming from them in a food web?
a)
More than one organism may eat them. 
b)
They may eat more than one other organism. 
c)
This organism gets its energy from multiple sources. 
d)
They have no resources available to them.
130.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source. 
131.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
132.
The fox in this food web would be considered a:
a)
Tertiary Consumer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
133.
The mouse in this food web would be considered a:
a)
Primary Consumer
b)
Producer
c)
Tertiary Consumer
d)
Secondary Consumer
134.
The image provided is an example of a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
135.
The image provided is an example of a(n):
a)
Autotroph
b)
Carnivore
c)
Herbivore
d)
Decomposer
136.
The image provided is an example of a(n):
a)
Carnivore
b)
Herbivore
c)
Producer
d)
Autotroph
137.
The image provided is an example of a(n):
a)
Producer
b)
Autotroph
c)
Consumer
d)
Insect

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