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Biochemistry: Metabolism Part 2 Glycolysis

Total questions: 171

Worksheet time: 1hrs 23mins

Name
Class
Date
1.

Which phase of glycolysis is referred to as the "investment phase"?

a)

Pyruvate production

b)

Steps 1–3, where ATP is consumed

c)

Steps 4–6, where energy is harvested

d)

Anaerobic respiration

2.

What enzyme phosphorylates glucose in the first step of glycolysis?

a)

PFK-1

b)

Hexokinase

c)

Enolase

d)

Aldolase

3.

What is the role of PFK-1 in glycolysis?

a)

Reversible step in energy harvesting

b)

Rate-limiting enzyme and major regulatory step

c)

Forms NADH

d)

Breaks down pyruvate

4.

What is the net ATP yield from glycolysis per glucose molecule?

a)

4

b)

0

c)

2

d)

3

5.

Which metabolite is produced at the end of glycolysis?

a)

Lactate

b)

Pyruvate

c)

Acetyl-CoA

d)

Glycerol

6.

What process recycles NADH back to NAD+ during anaerobic glycolysis?

a)

Gluconeogenesis

b)

Conversion of pyruvate to lactate

c)

β-oxidation

d)

TCA cycle

7.

Which enzyme converts DHAP to G3P?

a)

Aldolase

b)

GAPDH

c)

Triose phosphate isomerase

d)

Pyruvate kinase

8.

Which step in glycolysis directly generates NADH?

a)

Hexokinase

b)

Enolase

c)

Glyceraldehyde-3-phosphate dehydrogenase

d)

PFK-1

9.

What molecule donates phosphate during substrate-level phosphorylation in glycolysis?

a)

ATP

b)

High-energy intermediates like 1,3-BPG and PEP

c)

GTP

d)

Water

10.

What is the role of enolase in glycolysis?

a)

Phosphorylation of glucose

b)

Dehydration of 2-phosphoglycerate to PEP

c)

ATP formation

d)

Oxidation of pyruvate

11.

Which reaction is catalysed by pyruvate kinase?

a)

3PG → 2PG

b)

PEP → Pyruvate with ATP formation

c)

F6P → F1,6BP

d)

G6P → F6P

12.

What is the purpose of glucose phosphorylation in the first glycolytic step?

a)

Increase glucose concentration

b)

Trap glucose inside the cell

c)

Export glucose

d)

Store NADH

13.

What regulates hexokinase?

a)

Pyruvate

b)

Glucose-6-phosphate (product inhibition)

c)

ADP

d)

Citrate

14.

Why is glycolysis considered irreversible?

a)

Enzymes cannot function in reverse

b)

Three steps release large free energy changes

c)

NADH accumulates

d)

ATP is required

15.

Which enzyme links glycolysis and the TCA cycle?

a)

Enolase

b)

GAPDH

c)

Pyruvate dehydrogenase

d)

Citrate synthase

16.

What cofactor does pyruvate dehydrogenase require?

a)

NADPH

b)

Thiamine pyrophosphate (TPP)

c)

Biotin

d)

FADH₂

17.

Which molecule is a key regulator of glycolysis and gluconeogenesis?

(a)  

18.

In gluconeogenesis, which enzyme bypasses pyruvate kinase?

a)

Hexokinase

b)

Pyruvate carboxylase + PEP carboxykinase

c)

Glucokinase

d)

GAPDH

19.

What is the committed step of gluconeogenesis?

a)

G6P → Glucose

b)

Pyruvate → Lactate

c)

OAA → PEP

d)

F6P → F1,6BP

20.

Where does gluconeogenesis primarily occur?

a)

Muscle

b)

Liver

c)

Heart

d)

Brain

21.

What is the function of glycogenin?

a)

Glucose transport

b)

Core protein for glycogen synthesis

c)

Energy sensor

d)

Phosphate donor

22.

How is glycogen phosphorylase regulated?

a)

ATP activation

b)

Activated by AMP, inhibited by ATP and G6P

c)

Inhibited by insulin

d)

Activated by NADPH

23.

What triggers glycogen breakdown in muscle during exercise?

a)

Glucagon

b)

Adrenaline (epinephrine)

c)

Insulin

d)

AMP

24.

Which enzyme removes branches in glycogen?

a)

Glycogenin

b)

Glycogen phosphorylase

c)

Debranching enzyme

d)

Phosphoglucomutase

25.

What molecule is used to elongate glycogen?

a)

Glucose-1-phosphate

b)

G6P

c)

UDP-glucose

d)

Fructose

26.

What enzyme catalyses the conversion of glucose-1-phosphate to glucose-6-phosphate in glycogenolysis?

a)

Glycogen synthase

b)

Phosphoglucomutase

c)

Hexokinase

d)

Glucokinase

27.

Which hormone primarily stimulates glycogenolysis in the liver?

a)

Insulin

b)

Glucagon

c)

Adrenaline

d)

Cortisol

28.

What is the major fate of glucose-6-phosphate in the liver during fasting?

a)

Glycogen synthesis

b)

Gluconeogenesis and blood glucose export

c)

Fatty acid synthesis

d)

Lactate formation

29.

What distinguishes glucokinase from hexokinase?

a)

Inhibited by glucose

b)

Found in muscle

c)

Higher Km and only active at high glucose concentrations

d)

Works during fasting

30.

What is the first committed step of the pentose phosphate pathway?

a)

G6P → F6P

b)

G6P → 6-phosphogluconolactone (via G6PDH)

c)

Pyruvate → lactate

d)

GAP → DHAP

31.

What are the products of the oxidative phase of the pentose phosphate pathway?

a)

ATP and NADH

b)

NADPH and ribulose-5-phosphate

c)

CO2 and acetyl-CoA

d)

G6P and pyruvate

32.

Which tissue heavily relies on the pentose phosphate pathway for NADPH?

a)

Skeletal muscle

b)

Brain

c)

Red blood cells

d)

Kidney

33.

What is the primary function of NADPH in cells?

a)

Glycolysis

b)

Reductive biosynthesis and antioxidant defence

c)

Protein degradation

d)

DNA transcription

34.

What pathway contributes to nucleotide biosynthesis?

a)

Glycolysis

b)

Pentose phosphate pathway

c)

Citric acid cycle

d)

Fatty acid oxidation

35.

What is the primary input for the pentose phosphate pathway?

a)

Pyruvate

b)

Glucose-6-phosphate

c)

Ribulose

d)

Acetyl-CoA

36.

What is the purpose of the non-oxidative phase of the pentose phosphate pathway?

a)

Produce NADH

b)

Interconvert sugars for glycolysis or nucleotide biosynthesis

c)

Form lactate

d)

Generate ATP

37.

What enzyme links the pentose phosphate pathway to glycolysis?

a)

Aldolase

b)

Enolase

c)

Transketolase

d)

Pyruvate kinase

38.

Which vitamin-derived cofactor is needed for transketolase?

a)

FAD

b)

Thiamine pyrophosphate (TPP)

c)

NADH

d)

Biotin

39.

What happens when G6PDH is deficient in RBCs?

a)

Excess ATP

b)

Increased oxidative stress and haemolysis

c)

Elevated pyruvate

d)

Overactive TCA

40.

What does a high NADPH/NADP+ ratio indicate?

a)

High oxidative stress

b)

Abundant reducing power for biosynthesis

c)

Enzyme inhibition

d)

DNA damage

41.

What are the two main stages of photosynthesis?

a)

Carbon fixation and glycolysis

b)

Light-dependent and light-independent (Calvin cycle)

c)

Fermentation and respiration

d)

NADPH formation and glycolysis

42.

Where does the light-dependent reaction occur in plants?

a)

Cytosol

b)

Thylakoid membrane

c)

Matrix

d)

Outer membrane

43.

What is the primary output of the light-dependent reactions?

a)

Oxygen only

b)

ATP, NADPH, and O₂

c)

Glucose

d)

Lactate

44.

What pigment absorbs light in photosynthesis?

a)

NAD⁺

b)

Chlorophyll

c)

FAD

d)

Pyruvate

45.

What is the role of RuBisCO?

a)

Forms ATP

b)

Photolysis of water

c)

Fixes CO₂ in Calvin cycle

d)

Regenerates NADPH

46.

What is the product of one full turn of the Calvin cycle?

a)

ATP

b)

Fructose

c)

One G3P molecule

d)

Two glucose molecules

47.

Which process generates O₂ in photosynthesis?

a)

CO₂ fixation

b)

Photolysis of water

c)

Glucose oxidation

d)

G3P isomerisation

48.

What powers the Calvin cycle?

a)

Glycolysis

b)

ATP and NADPH from light reactions

c)

Electron transport chain

d)

Glucose hydrolysis

49.

What is the key function of fatty acid synthase?

a)

Breaks down triglycerides

b)

Elongates fatty acid chains from acetyl-CoA

c)

Transports acetyl-CoA

d)

Oxidises glycerol

50.

What is the primary substrate for biosynthesis of palmitate?

a)

Glucose

b)

Acetyl-CoA + NADPH

c)

Pyruvate

d)

Ketone bodies

51.

What enzyme initiates fatty acid synthesis by forming malonyl-CoA?

a)

Fatty acid synthase

b)

Acetyl-CoA carboxylase (ACC)

52.

What is the cofactor required by acetyl-CoA carboxylase?

a)

NAD+

b)

Biotin

c)

FAD

d)

CoA

53.

Where in the cell does fatty acid synthesis occur?

a)

Mitochondrial matrix

b)

Intermembrane space

c)

Cytosol

d)

ER lumen

54.

What inhibits acetyl-CoA carboxylase?

a)

Insulin

b)

Palmitoyl-CoA (product inhibition)

c)

Citrate

d)

NADPH

55.

Which molecule must be transported out of mitochondria to supply acetyl-CoA to the cytoplasm?

a)

Glucose

b)

Pyruvate

c)

Citrate

d)

Lactate

56.

What is the fate of cytosolic citrate in biosynthesis?

a)

Converted to pyruvate

b)

Cleaved to acetyl-CoA and oxaloacetate

c)

Enters glycolysis

d)

Forms NADPH directly

57.

What enzyme regenerates NADPH during fatty acid biosynthesis?

a)

Pyruvate kinase

b)

Malic enzyme (malate → pyruvate + NADPH)

c)

PEPCK

d)

Transaldolase

58.

What enzyme complex builds the fatty acid chain during biosynthesis?

a)

Carnitine acyltransferase

b)

Fatty acid synthase (FAS)

c)

Lipase

d)

Transaminase

59.

How many carbons are added per cycle by fatty acid synthase?

a)

1

b)

2

c)

3

d)

4

60.

What is the final product of mammalian fatty acid synthesis?

a)

Stearate

b)

Oleate

c)

Palmitate (16:0)

d)

Linoleate

61.

What activates acetyl-CoA carboxylase?

a)

Glucagon

b)

Citrate

c)

FADH₂

d)

NAD⁺

62.

What is the function of desaturase enzymes in lipid metabolism?

a)

Oxidise NADH

b)

Introduce double bonds into fatty acid chains

c)

Elongate glucose

d)

Add hydroxyl groups

63.

What are essential fatty acids?

a)

Ones produced during fasting

b)

Must be obtained from the diet

c)

Stored in muscle

d)

Synthesised from glucose

64.

What is the effect of insulin on fatty acid biosynthesis?

a)

Inhibits acetyl-CoA production

b)

Activates acetyl-CoA carboxylase and promotes biosynthesis

c)

Stimulates β-oxidation

d)

Forms ketones

65.

What determines the rate of fatty acid synthesis?

a)

FADH₂ levels

b)

Activity of acetyl-CoA carboxylase

c)

TCA speed

d)

Glycolysis rate

66.

Which amino acid is the precursor to neurotransmitter dopamine?

a)

Tryptophan

b)

Tyrosine

c)

Glycine

d)

Glutamine

67.

What is the precursor for serotonin synthesis?

a)

Phenylalanine

b)

Tryptophan

c)

Tyrosine

d)

Alanine

68.

What enzyme is used in the first step of amino acid biosynthesis?

a)

PFK

b)

Transaminase (aminotransferase)

69.

What cofactor is required by transaminases?

a)

NAD+

b)

Pyridoxal phosphate (PLP, derived from vitamin B6)

c)

FAD

d)

Coenzyme A

70.

What is the main nitrogen donor in transamination?

a)

Glycine

b)

Aspartate

c)

Glutamate

d)

Serine

71.

What is the role of glutamine synthetase?

a)

Makes NADH

b)

Converts glutamate + NH₃ → glutamine for nitrogen transport

c)

Forms succinate

d)

Inhibits TCA

72.

Where is glutaminase most active?

a)

Liver

b)

Kidney and intestinal cells

c)

Muscle

d)

Brain

73.

What is the fate of α-ketoglutarate in amino acid metabolism?

a)

Fat synthesis

b)

Reenters the TCA cycle after transamination

c)

Forms glucose

d)

Blocks ETC

74.

Which pathway disposes of excess nitrogen from amino acids?

a)

Gluconeogenesis

b)

Glycolysis

c)

Urea cycle

d)

Lipogenesis

75.

Which molecule enters the urea cycle carrying nitrogen?

a)

Aspartate

b)

Carbamoyl phosphate

c)

Glucose

d)

GTP

76.

What is the committed step of the urea cycle?

a)

Aspartate → argininosuccinate

b)

Carbamoyl phosphate synthesis by CPS I

c)

Ornithine → citrulline

d)

Urea → ammonia

77.

What is the source of the second nitrogen in urea?

a)

NH₃

b)

Aspartate

c)

Alanine

d)

Fumarate

78.

Which organelle does the urea cycle begin in?

a)

Cytosol

b)

Mitochondria

c)

Nucleus

d)

Golgi

79.

What enzyme converts citrulline to argininosuccinate?

a)

CPS I

b)

Argininosuccinate synthetase

c)

Arginase

d)

Glutaminase

80.

What is the final step of the urea cycle?

a)

Aspartate production

b)

Arginine synthesis

c)

Arginase cleaves arginine → urea + ornithine

d)

Pyruvate formation

81.

Which molecule links nitrogen metabolism to gluconeogenesis?

a)

Citrulline

b)

Alanine

c)

Glycine

d)

Histidine

82.

In the alanine cycle, what organ receives alanine from muscle?

a)

Brain

b)

Kidney

c)

Liver

d)

Heart

83.

In the glucose-alanine cycle, alanine is converted to what in the liver?

a)

Glucose

b)

Pyruvate → glucose via gluconeogenesis

c)

Citrate

d)

Lactate

84.

What is the purpose of the glucose-alanine cycle?

a)

Protein breakdown

b)

Transport nitrogen to liver and regenerate glucose

c)

Make ATP

d)

Detox ketones

85.

What is the purpose of Km in enzyme kinetics?

a)

Denotes active site shape

b)

Substrate concentration at half-maximal velocity

86.

What does a low Km indicate?

a)

Poor affinity

b)

High enzyme-substrate affinity

c)

Slow catalysis

d)

Weak inhibition

87.

What is the Michaelis-Menten equation?

a)

v = [S]/Km

b)

v = Vmax + [S]

c)

v = [Vmax [S]] / (Km + [S])

d)

v = Km/Vmax

88.

What does Vmax depend on?

a)

Substrate type

b)

Km

c)

Enzyme concentration

d)

pKa

89.

What is kcat?

a)

Substrate turnover

b)

Turnover number = number of reactions per enzyme per second

c)

Inhibitor constant

d)

Michaelis constant

90.

What is the formula for catalytic efficiency?

a)

Km × kcat

b)

kcat / Km

c)

Km / kcat

d)

Vmax / Km

91.

What happens to Vmax in competitive inhibition?

a)

Increases

b)

Remains unchanged

c)

Decreases

d)

Doubles

92.

What happens to Km in competitive inhibition?

a)

Decreases

b)

Increases

c)

No change

d)

Vmax falls

93.

What inhibition type binds only to the enzyme-substrate complex?

a)

Competitive

b)

Non-competitive

c)

Uncompetitive

d)

Reversible

94.

Which plot linearises the Michaelis-Menten equation?

a)

Bar chart

b)

Lineweaver-Burk plot (double reciprocal)

c)

Absorbance curve

d)

Sigmoidal

95.

In Lineweaver-Burk, what does the y-intercept represent?

a)

Km

b)

1/Vmax

c)

-1/Km

d)

Vmax

96.

What is the x-intercept on a Lineweaver-Burk plot?

a)

Vmax

b)

-1/Km

c)

Km

d)

-Vmax

97.

What is a limitation of Lineweaver-Burk plots?

a)

Uses linear scale

b)

Exaggerates error at low substrate concentrations

c)

No intercept

d)

No use in inhibition

98.

What does a sigmoidal curve in an enzyme velocity plot suggest?

a)

Michaelis-Menten enzyme

b)

Allosteric regulation and cooperativity

c)

Competitive inhibition

d)

pH change

99.

What is feedback inhibition?

a)

Cofactor inactivation

b)

End product inhibits an earlier enzyme

c)

Denaturation

d)

ATP increase

100.

What is the key assumption in steady-state enzyme kinetics?

a)

Product concentration is constant

b)

ES complex formation and breakdown is constant over time

c)

Substrate increases

d)

Enzyme degrades

101.
Where does glycolysis take place in cells?
a)
Cytoplasm
b)
Mitochondrion
c)
Endoplasmic Reticulum
d)
Ribosomes
102.
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
103.
The enzyme that produces G3P & DHAP is:
a)
Hexokinase
b)
Aldolase
c)
PhosphoFructoKinase
d)
Enolase
104.
Glycolysis results in the net gain of:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 Acetyl CoA
105.
Glycolysis results in the total production of:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 Acetyl CoA
106.
If Fructose-1,6-BisPhosphate is put through glycolysis the net result would be:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 FADH2
107.
Glucose enters cells and is committed to glycolysis with the addition of:
a)
PFK Enzymes
b)
-PO4 from ADP
c)
-PO4 from ATP
d)
Electrons from ATP
108.
Glucose molecules commonly enter cells through 
a)
GLUT4 Transporters
b)
Symports with Sucrose
c)
Antiports with Na+
d)
Na/K Pump action
109.
Which is not part of the net products of Glycolysis?
a)
2 ATP
b)
2 NADH
c)
2 Pyruvate
d)
2 CO2
110.
Glycolysis occurs during aerobic or anaerobic conditions.
a)
True
b)
False
111.
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
112.
Which of the following is not a requirement for glycolysis?
a)
Oxygen
b)
ATP
c)
NAD+
d)
Glucose
113.
Which of the following is not a product of glycolysis?
a)
FADH2
b)
NADH
c)
ATP
d)
Pyruvate
114.
NADH is produced by the oxidation of:
a)
G3P
b)
DHAP
c)
PEP
d)
1,3 BPG
115.
Which enzyme adds a phosphate to F-6-P?
a)
PhosphoFructoKinase
b)
Hexokinase
c)
Aldolase
d)
Pyruvate Kinase
116.
Which molecule is an isomer of Glyceraldehyde-3-Phosphate (G3P)?
a)
DHAP
b)
PEP
c)
Pyruvic Acid
d)
1,3 BPG
117.

Oxidation is the _________ of electrons.

a)

loss

b)

gain

c)

sharing

d)

transfer

118.

Reduction is the ___________ of electrons.

a)

loss

b)

gain

c)

sharing

d)

transfer

119.

Which reaction removes a molecule of phosphate?

a)

Oxidation

b)

Phosphorylation

c)

Dephosphorylation

d)

Reduction

120.

Which reaction adds a molecule of phosphate?

a)

Oxidation

b)

Phosphorylation

c)

Dephosphorylation

d)

Reduction

121.

NADH is in its what form?

a)

Oxidized form

b)

Reduced form

122.
Where does glycolysis take place in cells?
a)
Cytoplasm
b)
Mitochondrion
c)
Endoplasmic Reticulum
d)
Ribosomes
123.
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
124.
Glycolysis results in the net gain of:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 Acetyl CoA
125.
Glycolysis results in the total production of:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 Acetyl CoA
126.
Which is not part of the net products of Glycolysis?
a)
2 ATP
b)
2 NADH
c)
2 Pyruvate
d)
2 CO2
127.

Glycolysis occurs during aerobic or anaerobic conditions.

a)

aerobic

b)

anaerobic

c)

both

d)

neither

128.
Which of the following is not a requirement for glycolysis?
a)
Oxygen
b)
ATP
c)
NAD+
d)
Glucose
129.

How many high-energy electrons are passed to the carrier NAD+ to produce NADH in glycolysis?

a)

2

b)

8

c)

5

d)

4

130.

During glycolysis, glucose is broken down into how many molecules of pyruvate?

a)

2

b)

3

c)

4

d)

1

131.

How many ATP molecules are required to start glycolysis?

a)

Four

b)

Three

c)

Two

d)

One

132.

Which is a product of glycolysis?

a)

2 molecules of pyruvic acid

b)

1 molecule of glucose

c)

NAD+

d)

oxygen

133.

How many ATP molecules are synthesized from 4 ADP molecules?

a)

2

b)

4

c)

6

d)

1

134.

Where does the pyruvic acid produced by glycolysis go next?

a)

the Calvin Cycle

b)

the electron transport chain

c)

the Krebs Cycle

d)

back through the glycolysis process

135.

Glycolysis is the second stage of cellular respiration.

a)

True

b)

False

136.

Glycolysis requires oxygen

a)

True

b)

False

137.

Which of these is broken down into pyruvic acid?

a)

glucose

b)

oxygen

c)

water

138.

After the NAD+ receives electrons, what does it change to?

a)

ATP

b)

NADH

c)

ADP

139.

During glycolysis, glucose is broken down into how many molecules of pyruvic acid?

a)

2

b)

3

c)

4

d)

1

140.

Glycolysis has a net gain of how many ATP molecules?

a)

2

b)

4

c)

6

141.

How many ATP molecules are required to start glycolysis?

a)

Four

b)

Three

c)

Two

d)

One

142.

Finish the phrase: “As the bonds in glucose are _______ and rearranged, energy is __________.”

a)

broken, released

b)

built, trapped

c)

broken, trapped

d)

built, released

143.

Which of these is a reactant of glycolysis?

a)

pyruvic acid

b)

oxygen

c)

glucose

144.

Glycolysis DOES NOT need ATP to occur.

a)

True

b)

False

145.

Glycolysis has the potential to produce lots of energy very quickly.

a)

True

b)

False

146.
Where does glycolysis take place in cells?
a)
Cytoplasm
b)
Mitochondrion
c)
Endoplasmic Reticulum
d)
Ribosomes
147.
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
148.
Glycolysis results in the net gain of:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 Acetyl CoA
149.
Glycolysis results in the total production of:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 Acetyl CoA
150.
If Fructose-1,6-BisPhosphate is put through glycolysis the net result would be:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 FADH2
151.
Glucose enters cells and is committed to glycolysis with the addition of:
a)
PFK Enzymes
b)
-PO4 from ADP
c)
-PO4 from ATP
d)
Electrons from ATP
152.
Which is not part of the net products of Glycolysis?
a)
2 ATP
b)
2 NADH
c)
2 Pyruvate
d)
2 CO2
153.
Glycolysis occurs during aerobic or anaerobic conditions.
a)
True
b)
False
154.
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
155.
Which of the following is not a requirement for glycolysis?
a)
Oxygen
b)
ATP
c)
NAD+
d)
Glucose
156.
Which of the following is not a product of glycolysis?
a)
FADH2
b)
NADH
c)
ATP
d)
Pyruvate
157.
The first step in getting energy in the cell by breaking down glucose is known as
a)
the Krebs cycle
b)
electron transport
c)
fermentation
d)
glycolysis
158.
What is the starting molecule for glycolysis?
a)
Glucose
b)
ADP
c)
Oxygen
d)
Pyruvic Acid
159.
What is Anaerobic Respiration?
a)
process of producing energy without oxygen.
b)
process of producing energy with oxygen.
160.
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
161.
This molecule contains three phosphate groups
a)
ADP
b)
ATP
c)
Mitochondria
d)
Nucleus
162.
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
163.
Which is not a waste product of cellular respiration?
a)
Water
b)
Heat
c)
Carbon Dioxide
d)
Oxygen
164.
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
165.

The end product of glycolysis are two molecules of pyruvate. How many carbons are in a pyruvate molecule?

(a)  

166.

Glycolysis is a metabolic pathways that

I. Produces ATP

II. Produces NAD+

III. Produces pyruvate

IV. Occurs in cytoplasm

a)

I, II, III

b)

I, II, IV

c)

I, III, IV

d)

I, II, III, IV

167.

Phosphorylation on glucose will activate the glucose molecule.

a)

True

b)

False

168.

________ molecules of ATPs are invested and total ________ molecules of ATPs are formed in the end of glycolysis.

a)

One; two

b)

Two; four

c)

Two; two

d)

Four; four

169.
Glycolysis literally translates to:
a)
sugar-taking
b)
Glucose-making
c)
sugar-baking
d)
Glucose-breaking
170.

Which reaction adds a molecule of phosphate?

a)

Oxidation

b)

Phosphorylation

c)

Dephosphorylation

d)

Reduction

171.

NADH is in its what form?

a)

Oxidized form

b)

Reduced form

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