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Unit 2: Chemistry of Life Review

Total questions: 109

Worksheet time: 1hrs 20mins

Name
Class
Date
1.
Proteins are made of monomers called ___________
a)
Nucleotides
b)
Monosaccharides
c)
Amino Acids
d)
Glycerol and fatty acids
2.
The element _______is found in all of the organic compounds.
a)
Iron
b)
Nitrogen
c)
Carbon
d)
Oxygen
3.
DNA and RNA are examples of 
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
4.
Which macromolecule is made of simple and complex sugars?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
5.
Which macromolecule stores energy, insulates us, and makes up the cell membrane?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
6.
This is one job proteins do NOT have in the body
a)
storing genetic information
b)
structure
c)
speed up chemical reactions
d)
transport things through cell membrane
7.
DNA and RNA are examples of...
a)
proteins
b)
nucleic acids
c)
carbohydrates
d)
lipids
8.
Another name for fats and oils
a)
proteins
b)
sugar
c)
lipids
d)
nucleic acids
9.
The word saccharide means:
a)
sugar
b)
glucose
c)
sweetener
d)
carbohydrate
10.

How how carbohydrates and lipids similar?

a)

both contain C, H, O, N, P and store energy

b)

both contain C, H, O, N and give energy

c)

both contain C, H, O, N, S and store energy

d)

both contain C, H, O and give energy

11.

What is the key role (function) of carbohydrates?

a)

energy storage

b)

immunity, muscles, structure for tissues, cell metabolism

c)

instant energy for cells and body functions

d)

genetic information (heredity)

12.

What elements (monomers) make up a protein?

a)

C, H, O

b)

C, H, O, N, (S)

c)

C, H, O, N, P

13.
Which biomolecule is found in pasta and bread?
a)
Lipid
b)
Protein
c)
Nucleic Acid
d)
Carbohydrate
14.
Which biomolecule is a main source of quick energy?
a)
Nucleic Acid
b)
Protein
c)
Lipid
d)
Carbohydrate
15.
Which biomolecule is found in fats, oils, and waxes and is a source of long-term energy? 
a)
Proteins
b)
Nucleic Acid
c)
Lipids
d)
Carbohydrate
16.
What is the function of a nucleic acid?
a)
Stores genetic information
b)
Stores energy
c)
Quick source of energy
d)
Builds structures
17.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
18.
Each enzyme only has 1 substrate that will fit its active site.  What is this called?
a)
reusablility
b)
denaturation
c)
specificity
d)
fragility
19.
With what 3 letters do enzymes typically end?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
20.
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.
21.
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 .
22.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
23.
In the diagram, what is letter A? 
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
24.
Enzymes are...
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
25.
An enzyme speeds up a chemical reaction in the cell but can only be used once.  True or False? 
a)
true
b)
false
26.
What is the function of an enzyme?
a)
enzymes break themselves into small pieces
b)
enzymes slow down chemical reactions
c)
enzymes speed up chemical reactions
d)
enzymes combine products to form reactants 
27.
What happens when enzymes are heated to a high temperature?
a)
The enzymes die.
b)
The shapes of the enzyme are altered denature
c)
The enzymes' amino acid sequence changes.
d)
The enzymes remain the same
28.
Which of these is most likely an enzyme?  
a)
Sucrose
b)
Galactose
c)
Fructose
d)
Amylase
29.
Enzymes speed up reaction rates by changing...
a)
Activation Energy
b)
pH
c)
Hydrogen Bonds
d)
Kinetic Energy
30.
Letter D...
a)
active site
b)
enzyme
c)
substrate
d)
products
31.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
32.
Letter C...
a)
active site
b)
enzymes
c)
substrate
d)
products
33.
Letter E...
a)
active site
b)
enzyme
c)
substrate
d)
products
34.
Which enzyme is most efficient in a basic solution?
a)
A
b)
B
35.

These cells are found in animals, plants, fungi and protists.

a)

Eukaryotic

b)

Prokaryotic

36.

These cells have more DNA and it's always in a line.

a)

Eukaryotic

b)

Prokaryotic

37.

These cells do not have a nucleus.

a)

Eukaryotic

b)

Prokaryotic

38.

These cells have DNA in a loop (like a squished up rubberband).

a)

Eukaryotic

b)

Prokaryotic

39.

These cells are bacteria.

a)

Eukaryotic

b)

Prokaryotic

40.

These cells have a nucleus.

a)

Eukaryotic

b)

Prokaryotic

41.

These cells are the smallest cells.

a)

Eukaryotic

b)

Prokaryotic

42.

These cells are 10x larger than other cells.

a)

Eukaryotic

b)

Prokaryotic

43.

These cells have membrane covered organelles.

a)

Eukaryotic

b)

Prokaryotic

44.

These cells have no membrane-covered organelles.

a)

Eukaryotic

b)

Prokaryotic

45.

Everything is made up of one or more cells.

a)

True

b)

False

46.

The cell is the smallest living thing.

a)

True

b)

False

47.

All cells come from existing cells.

a)

True

b)

False

48.

All organisms are made up of one or more cells.

a)

True

b)

False

49.

The atom is the smallest living thing.

a)

True

b)

False

50.

The site of protein synthesis

a)

Golgi Apparatus

b)

Ribosome

c)

Endoplasmic Reticulum

d)

Mitochondrion

51.

Phospholipid bilayer that controls what enters + exits the cell

a)

Vacuole

b)

Cell Wall

c)

Cell/Plasma Membrane

d)

Nucleus

52.

Match the following organelles to their function.

a)

Golgi Apparatus

1.

Sorting, storing, modification and export of secretory products

b)

Endoplasmic Reticulum

2.

Transports materials between organelles

c)

Vacuole

3.

Maintains water balance (hydrostatic pressure)

53.

Mitochondria...

a)

are the site of protein synthesis

b)

are the site of aerobic respiration

c)

are the site of photosynthesis

d)

are the site of transcription

54.

Which of the following are in plant cells?

a)

Ribosomes

b)

Nucleus

c)

Endoplasmic Reticulum

d)

Cell Wall

e)

Chloroplast

55.

Which of the following are typically found in animal cells?

a)

Ribosomes

b)

Cell Wall

c)

Vacuole

d)

Mitochondria

e)

Chloroplast

56.

Identify the structure labelled 7

(a)  

57.

Identify the structure labelled 14

(a)  

58.

Identify the structure that transports materials between organelles.

(a)  

59.

Which number is labelling a chloroplast?

a)

11

b)

13

c)

9

d)

10

60.

Which number(s) are pointing to structure(s) found only in plant cells?

a)

10

b)

13

c)

9

d)

12

e)

1

61.

Which number is pointing to the structure that maintains hydrostatic pressure in a plant cell?

(a)  

62.

Identify the organelles labeled X and Y.

a)

X: Chloroplast

b)

Y: Nucleus

c)

X: Nucleus

d)

Y: Chloroplast

63.

Identify the structures in this animal cell labelled I and II.

a)

I: Plasma Membrane

b)

I: Cell Wall

c)

II: Mitochondrion

d)

II: Chloroplast

64.

Light-absorbing compounds such as chlorophyll are called:

a)

thylakoids

b)

stomata

c)

pigments

d)

stroma

65.

Which color of light is NOT absorbed by the chlorophyll, causing many plants to look this color?

a)

blue

b)

green

c)

orange

d)

red

66.

The organelles found inside of plant and algae cells, where the photosynthesis reactions take place:

a)

vascular tissue

b)

mitochondria

c)

endoplasmic reticulum

d)

chloroplasts

67.

Plant cells have both mitochondria for cellular respiration and chloroplasts for photosynthesis.

a)

True

b)

False

68.

Plants, algae, and cyanobacteria produce their own food (carbohydrates) by photosynthesis. This can then become food for other organisms that eat plants. What is another name for a producer?

a)

autotroph

b)

heterotroph

c)

decomposer

d)

nutrient

69.

Match the following pictures to their description

a)

1.

allow CO2 to go in, and H2O & oxygen out

b)

2.

organelle containing thylakoids & stoma

c)

3.

absorb water and nutrients for the plant

d)

4.

attracts pollinators to disperse pollen

e)

5.

two parts of photosynthesis

70.

Which of the following is the correct description of photosynthesis?

a)

oxygen and water are the reactants, and CO2 and carbohydrates are the products

b)

CO2 and water are the reactants, and carbohydrates and oxygen are the products

c)

CO2 and carbohydrates are the reactants, and water and oxygen are the products

71.

Match the following

a)

1.

this process produces ATP (cell energy)

b)

2.

this process makes glucose and oxygen

c)

3.

this works like a rechargeable battery

d)

4.

this carries an electron (-) to reaction

72.

How many reactions are involved in the process of photosynthesis?

a)

1

b)

2

c)

3

d)

4

73.

Water and carbon dioxide are required by plants for photosynthesis.

a)

true

b)

false

74.

Photosynthesis is a process that produces glucose (sugar) and oxygen.

a)

True

b)

False

75.

Both plants and animals have chloroplasts.

a)

True

b)

False

76.

The is known as the energy molecule and has three phosphates. When the bond holding the third phosphate is broken it releases a burst of energy for the cell to use.

a)

ATP

b)

ADP

c)

NADP+

d)

NADPH

77.

Animals, fungi, and most types of bacteria cannot make their own food by photosynthesis. What are these organisms called?

a)

autotrophs/producers

b)

heterotrophs/consumers

78.

Match the following

a)

CO2

1.

Carbon dioxide

b)

O2

2.

Oxygen gas

c)

H2O

3.

Water molecule

d)

C6H12O6

4.

Glucose molecule

e)

ATP

5.

Energy molecule

(adenosine triphosphate)

79.

Match the following

a)

Water goes into the thylakoid and O2 comes out

1.

Light-dependent reaction

b)

CO2 goes into the stroma (fluid around thylakoid) and sugars come out

2.

Light-independent reaction

c)

ATP loses a phosphate

3.

ADP is formed (adenosine diphosphate)

80.

This image of the two reactions in photosynthesis shows which of the following?

a)

ADP and NADP+ from the light-independent reaction power the light-dependent reaction

b)

ATP and NADPH from the light-dependent reaction power the light-independent reaction

c)

ADP and NADPH from the light independent-reaction power the light-dependent reaction

81.

Which of the following are examples of primary productivity (producing food)? Choose all that apply.

a)

photosynthesis

b)

cellular respiration

c)

fermentation (anaerobic cellular respiration)

d)

chemosynthesis

82.
What is the name of the 1st step of cellular respiration?
a)
Glycolysis
b)
Kreb's Cycle
c)
ETC
d)
Anaerobic respiration
83.
Where does glycolysis take place?
a)
Cytoplasm
b)
Stroma
c)
Thylakoid
d)
Mitochondria
84.
This process releases chemical energy from sugars and other carbon-based molecules to make ATP when oxygen is present.
a)
photosynthesis
b)
light-independent reaction
c)
cellular respiration
d)
light-dependent reaction
85.
Glucose is broken down during which process
a)
Krebs cycle
b)
Calvin cycle
c)
Glycolysis
d)
Photosynthesis
86.
Which is not a waste product of cellular respiration?
a)
Water
b)
Heat
c)
Carbon Dioxide
d)
Oxygen
87.
What is the correct equation for cellular respiration?
a)
6O2 + C6H12O6 -> 6CO2 + 6H2O + Energy
b)
6O2 + C6H12O6 + Energy -> 6CO2 + 6H2O
c)
6CO2 + 6H2O -> 6O2 + C6H12O6 + Energy
d)
6CO2 + 6H2O + Energy -> 6O2 + C6H12O6
88.
What is cellular respiration?
a)
the breakdown of glucose  to release ATP
b)
the breakdown of glucose to release NADH
c)
the breakdown of glucose to release FADH
d)
the breakdown of glucose to release carbon
89.
The energy in ATP is stored 
a)
in the bond between the second and third phosphate
b)
in the bond between the first and second phosphate
c)
in the bond between the adenosine and the first phosphate
d)
I like turtles
90.

Which of the following is a reactant of cellular respiration?

a)

Glucose

b)

Carbon Dioxide

c)

Water

d)

ATP

91.

Which of the following is a reactant of cellular respiration

a)

Carbon Dioxide

b)

Water

c)

Oxygen

d)

ATP

92.

Which of the following is a product of cellular respiration?

a)

Glucose

b)

Carbon Dioxide

c)

Oxygen

d)

Radiant Energy

93.

Which of the following is a product of cellular respiration?

a)

Radiant Energy

b)

Oxygen

c)

Glucose

d)

Water

94.

Which statement is true regarding cellular respiration?

a)

The reactants of cellular respiration are identical to the reactants of photosynthesis.

b)

The reactants of cellular respiration are obtained from the products of photosynthesis.

c)

The products of cellular respiration are the same as the products of photosynthesis

d)

Cellular respiration only occurs in autotrophs, photosynthesis occurs only in heterotrophs.

95.

A decrease in the amount of oxygen available will....

a)

not have an effect on the amount of energy produced during cellular respiration

b)

decrease the amount of glucose produced during cellular respiration

c)

cause the amount of water produced during cellular respiration to increase

d)

decrease the amount of energy produced during cellular respiration

96.

Which of the three steps of cellular respiration is anaerobic?

a)

Glycolysis

b)

Citric Acid Cycle

c)

Kreb's Cycle

d)

Electron Transport Chain

97.

How many ATP are produced during glycolysis?

a)

0

b)

2

c)

4

d)

1

98.

Where does anaerobic respiration occur?

a)

glucose molecule

b)

mitochondria

c)

cytoplasm

99.

What type of respiration is most efficient?

a)

aerobic

b)

anaerobic

c)

doesn't matter

100.

What is produced as a result of anaerobic respiration in mammals?

a)

Lactic acid

b)

ATP

c)

Acetic Acid

d)

Oxygen

101.

When might anaerobic respiration be useful?

a)

When watching TV

b)

Playing golf

c)

When going for a walk

d)

When escaping a predator

102.

Why do athletes continue to breath heavily after exercise? Choose 2 answers.

a)

They need O2 to break down lactic acid

b)

They need more O2 for aerobic respiration

c)

They have to remove excess CO2 from the blood

d)

The muscle cells need to rebuild their stores of ATP

103.

The product of anaerobic respiration in animals is

a)

2 ATP and lactic acid.

b)

36 ATP and lactic acid.

c)

2 ATP and ethanol.

d)

36 ATP and ethanol.

104.

The benefit of anaerobic respiration while sprinting is that ATP can be supplied very _____ as oxygen is _____ required.

a)

rapidly; not

b)

slowly; not

c)

rapidly, always

d)

slowly; always

105.

During anaerobic respiration what must be recycled to allow the process to continue?

a)

ATP

b)

NADH

c)

FAD

d)

NAD

106.

Which is not part of the net products of Glycolysis?

a)

2 ATP

b)

2 NADH

c)

2 Pyruvate

d)

2 CO2

107.

Glycolysis occurs during aerobic or anaerobic conditions.

a)

True

b)

False

108.

Which of the following is not a product of glycolysis?

a)

FADH2

b)

NADH

c)

ATP

d)

Pyruvate

109.

What is the purpose of converting pyruvate into lactate in mammals or ethanol in plants?

a)

To regenerate NADP so glycolysis can continue

b)

To regenerate NAD so glycolysis can continue

c)

To regenerate FAD so glycolysis can continue

d)

To regenerate ADP and Pi so glycolysis can continue

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