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SBI4U Cellular Respiration & Photosynthesis

Total questions: 60

Worksheet time: 1hrs 17mins

Name
Class
Date
1.

A type of Metabolism that builds up molecules into bigger things is

a)

catabolism

b)

macrolism

c)

biolism

d)

anabolism

2.

System of metabolism where larger particles are broken down into smaller.

a)

anabolism

b)

catabolism

c)

circulation

d)

macrobolism

3.

In the body, catalysts are called

a)

reactants

b)

macronutrients

c)

enzymes

d)

ribosomes

4.

Glucose

a)

C6H12O6

b)

CHO

c)

C6H6O6

d)

C12H12O12

5.

The following are products of cellular respiration except...

a)

Energy

b)

Water

c)

Carbon Dioxide

d)

Oxygen

6.

A term used to describe a process that does not require oxygen to happen

a)

Aerobic

b)

Anaerobic

c)

Fermentation

d)

Cellular Respiration

7.
Glycolysis occurs during aerobic or anaerobic conditions.
a)
True
b)
False
8.
Where does glycolysis take place in cells?
a)
Cytoplasm
b)
Mitochondrion
c)
Endoplasmic Reticulum
d)
Ribosomes
9.
The first step of glycolysis results in the formation of:
a)
Glucose-6-Phosphate
b)
Fructose-6-Phosphate
c)
ATP
d)
1,6 Bis-PhosphoGlycerate
10.
The enzyme that produces G3P & DHAP is:
a)
Hexokinase
b)
Aldolase
c)
PhosphoFructoKinase
d)
Enolase
11.
Glycolysis results in the net gain of:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 Acetyl CoA
12.
In the final step of glycolysis ATP is made through the process of:
a)
Substrate Level Phosphorylation
b)
Oxidative Phosphorylation
c)
Photo-Phosphorylation
d)
RedOx Reactions
13.
Which enzyme adds a phosphate to F-6-P?
a)
PhosphoFructoKinase
b)
Hexokinase
c)
Aldolase
d)
Pyruvate Kinase
14.
Which molecule is an isomer of Glyceraldehyde-3-Phosphate (G3P)?
a)
DHAP
b)
PEP
c)
Pyruvic Acid
d)
1,3 BPG
15.
What is the function of NAD+?
a)
It absorbs light
b)
It is an electron carrier
c)
It is a light-reflecting pigment
d)
It acts as long-term energy storage
16.
How many FADH2 molecules are produced by 1 turn of the Krebs Cycle?
a)
1
b)
2
c)
3
d)
4
17.
Krebs Cycle takes place in the:
a)
Cytoplasm
b)
Matrix
c)
Ribsome
d)
InterMembrane Space
18.
Folds in the mitochondrion are called:
a)
Cristae
b)
Matrix
c)
Golgi Bodies
d)
Carbuncles
19.
Prior to entering the Krebs Cycle, each pyruvate molecule loses electrons, hydrogen ions, and a carbon, forming an energy-rich molecule of
a)
Acetyl-CoA
b)
Citrate
c)
Oxaloacetate
d)
Malate
20.

For the two pyruvates that enter from glycolysis, the Krebs cycles will yield:

a)

1 ATP, 2 NADH, and 1 FADH2

b)

1 ATP, 2 NADH, and 2 FADH2

c)

1 ATP, 3 NADH, and 1 FADH2

d)

2 ATP, 8 NADH, and 2 FADH2

e)

2 ATP, 4 NADH, and 2 FADH2

21.

The waste product produced during the Krebs cycle is...

a)

Oxygen

b)

Water

c)

Carbon Dioxide

d)

ATP

22.

Which of the following is the correct overall equation of pyruvate oxidation.

a)

2 pyruvate + 2 NAD+ + 2 CoA -----> 2 acetyl-CoA + 2 NADH + 2H+ + 2 CO2

b)

2 pyruvate + 2 NAD+ + 4 CoA -----> 4 acetyl-CoA + 2 NADH + 2H+ + 2 CO2

c)

2 pyruvate + 2 NAD+ + 4 CoA -----> 2 acetyl-CoA + 2 NADH + 2H+ + 4 CO2

23.

T/F - The Krebs cycle is a cyclic process because the product of step 8, is the reactant in step 1

a)

True

b)

False

24.

T/F - By the end of the Krebs cycle, the original glucose molecule is entirely consumed and leaves the process as six low-energy CO2 molecules, which are released by the cell as waste.

a)

True

b)

False

25.
Which process is the largest contributor to the release of CO2 
a)
Citric Acid Cycle or Krebs Cycle
b)
Pyruvate Oxidation
c)
Glycolysis
d)
Oxidative Phosphorylation 
26.
For every molecule of glucose, how many molecules of FADH2 are produced by the Krebs Cycle?
a)
1
b)
2
c)
4
d)
6
27.
NAD and FAD are _________ in the Krebs cycle.
a)
oxidized
b)
reduced
c)
carboxylated
d)
phosphorylated
28.

Electron transport helps establish a _____ that powers ATP production.

a)

proton gradient

b)

vacuole

c)

peroxisome

d)

power vault

29.

Is it a must for ETC to occurs before chemiosmosis?

a)

Yes, it's a must.

b)

No, it's not a must.

30.

Why ETC must occur first before chemiosmosis?

a)

to produce H2O

b)

to produce ATP

c)

to create proton-motive force

31.

What will happen if there is a leakage in the inner membrane of mitochondria.

a)

no proton-motive force will be created

b)

chemiosmosis will be delayed

c)

no ATP will be produced

d)

no H2O will be produced

32.

what is the last electron acceptor in ETC.

a)

H2O

b)

Oxygen

c)

Ubiquinone

d)

ATP Synthase

33.

How much ATP will be generated from NADH?

a)

1

b)

4

c)

3

d)

2

34.

How much ATP will be generated from FADH2?

a)

2

b)

4

c)

1

d)

3

35.

ETC occurs in ___.

a)

in mitochondria

b)

matrix of mitochondria

c)

in cytoplasm

d)

inner membrane of mitochondria

36.

Identify E.

a)

ATP synthase

b)

NADH dehydrogenase

c)

Ubiquinone

d)

Cytochrome c reductase

37.

ATP Synthase: ATP Synthase is a(n)...

a)

Enzyme

b)

Lipid

c)

Carbohydrate

d)

ATP Molecule

e)

None of these

38.

ATP Synthase: ATP Synthase 'creates'...

a)

Energy

b)

Adenosine Triphosphate

c)

Adenosine Tetrapholate

d)

ADP

e)

Inorganic Phosphate

39.

The 'building' of ATP is a hydrolysis reaction, meaning ______ is released by the chemical reaction.

a)

Hydrogen Ion

b)

Water (H2O)

c)

Hydronium (H3O)

d)

Hydroxide (OH-)

40.

ATP Synthase: What 'powers' the ATP Synthase?

a)

Hydrogen Ion

Protons

b)

Water

c)

Sugar

d)

Electrons

e-

e)

ADP

41.

Structure and Function: Which portion 'synthesizes' the ATP?

a)

F0

b)

F1

42.
Which of the three steps of cellular respiration is anaerobic?
a)
Glycolysis
b)
Citric Acid Cycle
c)
Kreb's Cycle
d)
Electron Transport Chain
43.
Where does anaerobic respiration occur?
a)
glucose molecule
b)
mitochondria
c)
cytoplasm
44.

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

45.

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

46.

What are the products of anaerobic respiration in plants and yeast?

a)

Lactic Acid and Carbon Dioxide

b)

Carbon Dioxide and Energy

c)

Ethanol and Energy

d)

Ethanol and Carbon Dioxide

47.

Bread dough rises due to anaerobic respiration in yeast. Once the oxygen is used up, yeast are forced to respire anaerobically and produce this gas which forms bubbles in the dough.

a)

CO2

b)

O2

c)

CO

d)

CH4

48.

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

a)

ATP

b)

NADH

c)

FAD

d)

NAD

49.
Which of the following is true about anaerobic respiration?
a)
It is a fast process
b)
It allows organisms to live in places with little oxygen
c)
It evolved before aerobic respiration
d)
all of the above
50.

The Calvin Cycle takes place in the:

a)

Stroma

b)

Thylakoid

c)

Grana

d)

Stomata

51.
The enzyme responsible for Carbon Fixation in C3 Photosynthesis is
a)
RuBisCo
b)
PEP Carboxylase
c)
Hexokinase
d)
Pyruvate DeHydrogenase
52.
The molecule that comes out of the Calvin Cycle to produce glucose, and polymers like cellulose is:
a)
RuBP
b)
GP3
c)
3-PG
d)
G3P
53.
The main advantage of C4 Photosynthesis is the ability to avoid:
a)
Transpiration
b)
Photorespiration
c)
Photosynthesis
d)
Signal Transduction
54.
In CAM Photosynthesis, the enzyme RuBisCo is replaced by PEP Carboxylase.
a)
True
b)
False
55.
The main problem encountered by C3 plants in hot conditions is:
a)
Transpiration
b)
PhotoRespiration
c)
Dehydration
d)
Starvation
56.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
57.
What is the main purpose of the light dependent reactions?
a)
To provide the energy for the calvin cycle
b)
To capture energy and make sugar
c)
To reflect green light
d)
To make sugars
58.
What are the two products of the light reactions that are needed for the calvin cycle?
a)
NAD and NADPH
b)
NADP + and Glucose
c)
NADPH and ATP
d)
Oxygen and NADPH
59.

What is the waste-product of light-dependent reaction?

a)

oxygen

b)

water

c)

carbon dioxide

60.
The colours of light best absorbed by chlorophyll are...
a)
green and yellow
b)
red and blue/violet
c)
red and green
d)
blue and yellow

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