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Biochem Test #2
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Biology
Biochemistry
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1
Metabolic Pathway
What is it called when a fuel is used and large molecules are made in an integrated network of reactions?
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2
Ribose
Which of the following is a component of ATP?
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3
90%
How much ATP is the proton gradient responsible for
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4
Vitamins
What is a source of coenzymes in higher animals?
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5
Oxygen
What is the final electron acceptor in aerobic respiration?
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6
Carbon Dioxide
What is the product of complete oxidation?
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7
Formation of isocitrate from citrate
Which of the following is an example of isomerization?
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8
ATP
What is the chemical currency of the cell?
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9
NADPH has been esterified with phosphate
What is the difference between NADPH and NADH?
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10
FADH2
What is the reduced form of flavin adenine dinucleotide?
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11
A carbonyl group reacting with an alcohol group
What causes the cyclization of sugars?
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12
When the substituent on C1 is opposite the substituent of C6
What is an alpha anomer?
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13
Glucose
What is the essential molecule of energy storage
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14
Long straight beta linkages
What gives cellulose its unique properties?
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15
Epimers
What is it called when two monosaccharides differ in stereochem at one place?
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16
Two molecules of pyruvate and two molecules of ATP
What does glycolysis produce?
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17
Mg2+ or Mn2+
What ions does hexokinase need?
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18
Kinases
What type of enzyme transfers a phosphate group?
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19
In the liver
Where is fructose metabolized?
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20
Fructose 1,6 bisphosphate
What activates pyruvate kinase?
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21
In the kidneys
In what organ does gluconeogenesis occur?
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22
The liver
What controls glucose levels in the blood?
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23
In the lumen of the ER
Where is free glucose located in the cell?
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24
Glucogen
What stimulates protein kinase A?
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25
It couples the reaction to phosphorylation to make it go forward
What is the purpose of the thioester intermediate?
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26
Lipoamide
What is the prosthetic group of E2?
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27
Coenzyme Q
What part of the electron transport chain accepts electrons from iron sulfur clusters?
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28
Alpha-ketoglutarate and oxaloacetate
What components of the citric acid cycle can be used to synthesize amino acids?
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29
Succinyl CoA
What is the inhibitor of the rate limiting step of the citric acid cycle?
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30
Inhibition by phosphorylation
What is the key regulator of pyruvate dehydrogenase?
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31
NADH-Q oxidoreductase
What is the name of complex 1 in the electron transport chain?
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32
Succinate dehydrogenase
What is the name of complex 2 in the electron transport chain?
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33
Q-cytochrome c oxidoreductase
What is the name of complex 3 in the electron transport chain?
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34
Cytochrome c oxidase
What is the name of complex 4 in the electron transport chain?
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35
Heme as a prosthetic group
What does cytochrome contain that aids in electron transfer?
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36
Cytochrome c oxidase
What enzyme catalyzes the conversion of O2 into H2O?
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37
Iron sulfur clusters
What is the prosthetic group present in complexes 1,2, and 3?
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38
Coenzyme Q
What has an isoprenoid tail?
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39
One half channel is exposed towards the matrix and the other half channel is exposed to the intermembrane space
Which of the following is true about complex 1?
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40
Cytochrome C
Which of the following is water soluble?
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41
Proton gradient
What type of gradient is used to power ATP synthase
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42
A pH gradient is formed by the movement of protons from the inner mitochondrial space to the matrix.
What gradient is formed and what forms it?
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43
In the inner membrane
Where does ATP synthesis occur?
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44
ADP enters only if ATP exists
Which of the following is true?
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45
It causes ATP to be released
What is the role of the proton gradient?
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