Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biochemisty Main > 5th Biochemistry Lecture Exam (Batch 2025) > Flashcards

5th Biochemistry Lecture Exam (Batch 2025) Flashcards

1
Q
  1. Which enzyme when activated acts on diacylglycerol in the adipose cells?

A. Adipose triacylglycerol lipase
B. Hormone sensitive lipase
C. Monoacyglycerol lipase
D. Colipase

A

B. Hormone sensitive lipase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q
  1. Which is the major pathway of the oxidation of fatty acids?

A. Mitochondrial beta
B. Alpha
C. Omega
D. Peroxisomal

A

A. Mitochondrial beta

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q
  1. In which cells does beta oxidation of fatty acids DO NOT occur?
    A. Liver cells
    B. Muscle cells
    C. Red blood cells
    D. Cardiac cells
A

C. Red blood cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q
  1. To which molecule are fatty acids attached when activated?

A. Carnitine
B. CoEnzyme A
C. CoEnzyme Q
D. Acyl Carrier protein

A

B. CoEnzyme A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q
  1. Equivalent to how many moles of ATP are hydrolyzed in the activation of fatty acids?
    A. One
    B. Two
    C. Three
    D. Four
A

B. Two

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q
  1. Which is source of energy that drives the activation reaction of fatty acids to completion?
    A. Acyl adenylate moiety
    B. Released AMP

C. PPi
D. CoA

A

C. PPi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q
  1. Which protein transports the palmitoyl carnitine inside the matrix?

A. Tricarboxylate translocase
B. Monocarboxylate translocase
C. Dicarboxylate translocase
D. Carnitine acyl carnitine translocase

A

D. Carnitine acyl carnitine translocase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q
  1. Which reactions, in the order of occurrence, are carried out every time a two carbon moiety is removed from a fatty acid subjected to beta oxidation?
    A. Cleavage, hydration, oxidation, oxidation
    B. Oxidation cleavage, oxidation, hydration
    C. Oxidation, hydration, oxidation, cleavage

D. Hydration, oxidation, cleavage, oxidation

A

C. Oxidation, hydration, oxidation, cleavage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q
  1. To which complex of the ETC accepts are the electrons and protons released from the first oxidation reaction of beta oxidation?

A. NADH-CoQ oxidoreductase
B. ETFP-CoQ oxidoreductase
C. Cytochrome c oxidase
D. Cytochrome oxidase

A

B. ETFP-CoQ oxidoreductase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q
  1. Which enzyme catalyzes the 2nd reaction of beta oxidation?

A. 3-L-hydroxyacylCoA dehydrogenase
B. Acyl CoA dehydrogenase

C. Thiolase
D. Enoly CoA hydratase

A

D. Enoly CoA hydratase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q
  1. How many ATPs does the first reaction of beta oxidation generates after transferring its electrons and protons to the respiratory chain?
    A. Two
    B. Three
    C. Four
    D. Five
A

A. Two

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q
  1. How many cycles/spirals would a 18

carbon saturated fatty acid undergo in beta oxidation releasing the acetyl CoA moieties?
A. Five

B. Six
C. Seven
D. Eight

A

D. Eight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q
  1. How many ATPs are generated from all the acetyl CoA moieties released from beta-oxidation of stearic acid?
    A. 90
    B. 102

C. 108
D. 118

A

C. 108

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q
  1. What is another product of beta-oxidation of a 19 carbon saturated fatty acid aside from acetyl CoA?

A. Acetyl CoA
B. Isobutyryl CoA
C. Propionyl CoA
D. Valeryl CoA

A

C. Propionyl CoA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q
  1. To which intermediate of the Kreb’s cycle does the product of the last cycle/spiral of beta-oxidation of a 15 carbon fatty acid enter?

A. Fumarate
B. Succinyl CoA
C. Succinate
D. Malate

A

B. Succinyl CoA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

16.Which additional enzyme is used in the beta oxidation of a monounsaturated fatty acid?

A. Δ3Δ2-enoyl CoA isomerase
B. 2,4-dienoyl CoA-reductase
C. Enoyl CoA-reductase
D. Acyl CoA dehydrogenase

A

A. Δ3Δ2-enoyl CoA isomerase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q
  1. How many ATP less would be derived from oxidation of a monounsaturated fatty acid compare with the oxidation of a saturated fatty acid having the same number of carbons?

A. Four
B. Three

C. Two
D. One

A

C. Two

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q
  1. Which oxidation process is used to degrade very long chain fatty acids?
    A. Mitochondrial beta
    B. Alpha
    C. Omega
    D. Peroxisomal
A

D. Peroxisomal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q
  1. How would the products of oxidation of VLCFA generate energy in the form of ATP?
    A. Have to be transported to the mitochondrial matrix
    B. Thru the glycolytic pathway
    C. Metabolized thru the alpha oxidation
    D. Degraded via the omega oxidation
A

A. Have to be transported to the mitochondrial matrix

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q
  1. More ATPs are formed per cycle/spiral thru mitochondrial beta oxidation than thru oxidation of VLCFA, by how many?
    A. One
    B. Two
    C. Three
    D. Four
A

B. Two

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q
  1. Which enzyme catalyzes the rate-

limiting step of beta oxidation of palmitic acid?

A. Carnitine palmitoyl transferase I
B. Carnitine palmitoyl transferase II
C. Acetyl CoA carboxylase

D. Carnitine acyl-carnitine translocase

A

A. Carnitine palmitoyl transferase I

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q
  1. To which does the FADH2, generated in the first oxidation step of peroxisomal oxidation, transfers its electrons and protons?
    A. Complex II
    B. ETFP-CoQ oxidoreductase
    C. Oxygen

D. Complex I

A

D. Complex I

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q
  1. Which is the product of peroxisomal oxidation of VLCFA?

A. Acetyl CoA
B. Propionyl CoA
C. Fatty dicarboxylyl CoA
D. Octanoyl CoA

A

D. Octanoyl CoA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q
  1. Which coenzyme is used in the oxidation steps of omega oxidation of fatty acids?
    A. NAD+
    B. NADH + H+ C. NADP+

D. NADPH + H+

A

A. NAD+

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
25.  Which enzyme is activated by cortisol in times of energy need?   A. Colipase B. Desnutrin C. Hormone sensitive lipase D. Monoacylglycerol lipase
B. Desnutrin
26
26.  The chemical formula for AA is:   A. C20H32O2, 20:4(ω3) B. C20H32O2, 20:4(ω6) C. C20H32O2, 20:4(ω9) D. C18H28O2, 20:4(ω3)
B. C20H32O2, 20:4(ω6)
27
27.  Significant precursors of eicosanoids include the following, except? A. 5-8-11,14 - eicosatetraenoic acid B. 8,11,14 - eicosatetraenoic acid C. 5,8,1,14,17 - eicosapentaenoic acid D. 6,9,11,14,17 - eicosapentaenoic acid
D. 6,9,11,14,17 - eicosapentaenoic acid
28
28.  Endogenous sources of arachidonic acid?   A. Linoleic acid B. Dihomo-g-Linolenic acid C. Oleic acid   D. N-Arachidonoyl
D. N-Arachidonoyl
29
29.  Arachidonic acid is most abundant in?   A. Liver B. Lymphocytes   C.  Platelets D.  Bone marrow
A. Liver
30
30.  Yields arachidonic acid from phospholipids by hydrolysis of the sn-2 position in one single step? A. Phospholipase A1 B. Phospholipase A2 C. Phospholipase C D. Phospholipase D
B. Phospholipase A2
31
31.  Requirement for activation and expression of phospholipases, as a response from cellular activation signals?   A. G coupled transducing protein B. Toll-like receptor 4   C. Purinergic receptors D. Tumor promoting agents
A. G coupled transducing protein
32
32.  Non-enzymatic reactions of arachidonic acid include which of the following? A. Production of PGH2 by prostaglandin synthase.   B. Production of nitroeicosatetranoic acid by CCL4.   C. Production of LTA4 by 5-lipoxygenase. D. Production of epoxyeicosatrienoic acid by epoxygenase.
B. Production of nitroeicosatetranoic acid by CCL4.
33
33.  Which following statement is false regarding cell to cell interactions in eicosanoid biosynthesis? A. AA metabolism are usually similar from cell to cell and from tissue to another.   B. There is variability in enzyme expression depending on the state of the cell.   C. Unstable intermediates are transferred to another cell to trigger biosynthesis.   D. In an injured tissue, at least two cells must contain the complete enzyme cassette.
A. AA metabolism are usually similar from cell to cell and from tissue to another.
34
34.  Contributes to eicosanoids production and acts in a paracrine manner, propagates and amplifies inflammatory response to neighboring cells? A. Cytosolic calcium dependent phospholipase A2   B. Secretory phospholipase A2 C. Cytosolic calcium independent phospholipase A2   D. Specialized phospholipase A2
B. Secretory phospholipase A2
35
35.  The principal mediator of inflammation, mitogenesis and angiogenesis?   A. Cyclooxygenase-1 B. Cyclooxygenase-2   C. Cyclooxygenase-3 D. Lipoxygenase
B. Cyclooxygenase-2
36
36.  Responsible for cell to cell signaling, tissue homeostasis and cytoprotection?   A. Cyclooxygenase-1 B. Cyclooxygenase-2 C. Cyclooxygenase-3 D. Lipoxygenase
A. Cyclooxygenase-1
37
37.  The 1st product of COX which is an unstable compound that quickly converts to PGH2? A. Cyclic 8,10 endoperoxide, 15 hydroperoxide compound   B. Cyclic 6, 8 endoperoxide, 15 hydroperoxide compound   C. Cyclic 9, 11 endoperoxide, 15 hydroperoxide compound   D. Cyclic 6, 11 endoperoxide, 15 hydroperoxide compound
C. Cyclic 9, 11 endoperoxide, 15 hydroperoxide compound
38
38.  Effector function by PGI2?   A. Recruit basophils and eosinophils B. Bronchoconstriction C.  Vasoconstriction D. Uterine contraction
D. Uterine contraction
39
39. TXA2 is converted from PGH2 by? A. Thromboxane synthase B. PGI2 synthase C.  Endoperoxide-D isomerase D. Reductase
A. Thromboxane synthase
40
40.  The structural characteristics of PGI2 is similar to other prostaglandins, except? A. Presence of a 5-member ring. B. Presence of hydroxyl group C. Presence of double bonds D. Arrangement of carbonyl group
D. Arrangement of carbonyl group
41
41.  Action of a prostacyclin synthase enzyme on PGH2 yield?   A. PGI2   B. PGD2 C. PGE2 D. TXA2
A. PGI2
42
42.  PGH2 conversion by endoperoxide-D isomerase and succeeding preferential conversion to 9-α,11-β-prostaglandin F will yield a product that will induce? A. Hypertension from histamine release B. Inhibition of platelet aggregation C. Dilatation of vascular smooth muscle. D. Bronchial dilatation
B. Inhibition of platelet aggregation
43
43.  The following statements are true of Prostaglandin E2, except?   A. Found in the gastric mucosa, renal medulla, microvascular endothelium and tumors.   B. Preserve the integrity of the gastric mucosa   C. Relaxation of bronchial smooth muscle tissues   D. Production results in unopposed vasoconstriction
D. Production results in unopposed vasoconstriction
44
44.  Which of the following statements of Thromboxane A2 is correct?   A. Include a 5-member ring containing an ether. B. Has a different affinity for each eicosanoid-specific ligands. C. Converted from PGH2 by thromboxane isomerase.   D. COX inhibition by aspirin results in complete loss of platelet function.
B. Has a different affinity for each eicosanoid-specific ligands.
45
45.  Which of the following statements is true of the relationship of COX expression and platelet function? A. Platelets are unique in that they do not regenerate COX.   B. Promoters of platelet function are dependent on TXA2.   C. Aspirin inhibition of platelets completely alters its response.   D. TXA2 is not necessary for normal platelet function.
A. Platelets are unique in that they do not regenerate COX.
46
46.  Free arachidonic acid, to produce hydroperoxyeicosatetraenoic acid are acted upon by lipoxygenase enzymes. Which of the following is incorrect? A. Oxygenation occurs at different Arachidonic acid positions.   B. 2 oxygen atoms are introduced ar C-5, C-8, C-9, or C-15.   C. Lipoxygenase enzymes are numbered according to the O2 introduced to the carbon atom.   D. Products include leukotrienes and lipoxins.
B. 2 oxygen atoms are introduced ar C-5, C-8, C-9, or C-15.
47
47.  Leukotriene A4 is produced from 5-hydroperoxyeicosatetraenoic acid by? A. 5-LOX B. 12-LOX C. 15-LOX D. LT synthase
D. LT synthase
48
48.  One enzyme that exerts its action on LTA4, whose product functions is chemotaxis and degranulation of PMNs?   A. LTA4 hydrolase B. Glutathione transferase   C.  Lipoxygenase D.  Glutathione isomerase
A. LTA4 hydrolase
49
49.  LTC4 is produced from LTA4 by? A. H2O donating diol.   B. Adding glutathione molecules. C. Adding amino acids. D. O2 at carbon atoms.
B. Adding glutathione molecules.
50
50.  Involved in asthma and anaphylaxis? A. LTA4   B. LTB4 C. LTC4 D. Lipoxins
C. LTC4
51
51.  Which of the following statements regarding fatty acid synthesis is/are FALSE? A. It takes place in the mitochondrial matrix   B. Synthesis intermediates are covalently linked to Acyl Carrier Protein   C. Its rate-limiting enzyme is Acetyl-CoA carboylase   D. All of the above
A. It takes place in the mitochondrial matrix
52
52.  What are the four repeating steps in fatty acid synthesis in correct order (from most oxidized to least oxidized substrate)?   A. Condensation, reduction, dehydration, reduction   B. Oxidation, Hydration, oxidation, lysis C. Reduction, dehydration, reduction, dehydration   D. Condensation, dehydration, reduction, condensation
A. Condensation, reduction, dehydration, reduction
53
53.  Which of the following acts as a source of reducing equivalents for fatty acid synthesis? A. NADH B. NADPH C. Glutathione peroxidise D. Fatty acid synthase
B. NADPH
54
54.  Fatty acid synthesis is synthesized __ carbon(s) at a time for each cycle with the final product being ___. A. 4, Oleic acid B. 1, Acetoacetyl-CoA C. 2, Palmitic acid D. 8, Palmitate
C. 2, Palmitic acid
55
55.  Which carbon(s) is/are initially added to the structure of a fatty acid?   A. Methyl end carbon B. Carboxyl end carbon C. Unsaturated carbons D. Chiral carbon
A. Methyl end carbon
56
56. Which of the following activates Fatty acid synthesis?   A.  Insulin B. Citrate C.  Long-chain Fatty Acyl-CoA D. A and B only
D. A and B only
57
57.  The rate-limiting enzyme of fatty acid synthesis is inhibited by:   A. Cyclic AMP B. Dephosphorylation C. Insulin   D. All of the above
A. Cyclic AMP
58
58.  Fatty acid synthesis from its 2-carbon Co-A precursor needs to be transferred to the cytosol from the mitochondria. This is done by converting the precursor to   ________. A. Malate   B. Citrate C. Oxaloacetate D. Acetoacetyl-CoA
B. Citrate
59
59.  The rate-limiting enzyme of fatty acid synthesis is activated by ______ and switched off by ________. A. Phosphorylation, dephosphorylation   B. Dephosphorylation, phosphorylation C. Acetylation, deacetylation   D. Deacetylation, acetylation
B. Dephosphorylation, phosphorylation
60
60.  The rate-limiting enzyme of fatty acid synthesis uses this as a carbon dioxide carrier: A. Biotin B. Pyridoxine C. NADPH D. Folate
A. Biotin
61
61.  Conversion of malate to oxaloacetate:   A. PENTOSE PHOSPHATE PATHWAY B. CITRIC ACID CYCLE C. PYRUVATE DEHYDROGENASE COMPLEX D. FATTY ACID SYNTHASE COMPLEX E. ACETYL-COA-CARBOYXLASE
B. CITRIC ACID CYCLE
62
62.  Formation of Acetyl-CoA from glucose:   A. PENTOSE PHOSPHATE PATHWAY B. CITRIC ACID CYCLE   C. PYRUVATE DEHYDROGENASE COMPLEX D. FATTY ACID SYNTHASE COMPLEX   E. ACETYL-COA-CARBOYXLASE
C. PYRUVATE DEHYDROGENASE COMPLEX
63
63.  Main source of reducing equivalents for fatty acid synthesis:   A. PENTOSE PHOSPHATE PATHWAY B. CITRIC ACID CYCLE   C. PYRUVATE DEHYDROGENASE COMPLEX D. FATTY ACID SYNTHASE COMPLEX E. ACETYL-COA-CARBOYXLASE
A. PENTOSE PHOSPHATE PATHWAY
64
64.  Enoyl reductase:   A. PENTOSE PHOSPHATE PATHWAY B. CITRIC ACID CYCLE   C. PYRUVATE DEHYDROGENASE COMPLEX D. FATTY ACID SYNTHASE COMPLEX E. ACETYL-COA-CARBOYXLASE
D. FATTY ACID SYNTHASE COMPLEX
65
65. Production of Malonyl-CoA:   A. PENTOSE PHOSPHATE PATHWAY B. CITRIC ACID CYCLE   C. PYRUVATE DEHYDROGENASE COMPLEX D. FATTY ACID SYNTHASE COMPLEX E. ACETYL-COA-CARBOYXLASE
E. ACETYL-COA-CARBOYXLASE
66
66.  Complex amino alcohol plus fatty acid, which is abundant in cell membranes that are specialized to form lipid rafts: A. TRIACYLGLYCEROL B. GLYCEROPHOSPHOLIPIDS C. ETHER GLYCEROLIPIDS D. SPHINGOMYELIN E. GLYCOLIPIDS
D. SPHINGOMYELIN
67
67.  Mostly stored as energy reserve in adipose tissue and liver:   A. TRIACYLGLYCEROL   B. GLYCEROPHOSPHOLIPIDS C. ETHER GLYCEROLIPIDS D. SPHINGOMYELIN E. GLYCOLIPIDS
A. TRIACYLGLYCEROL
68
68.  Cerebrosides and globosides:   A.  TRIACYLGLYCEROL B. GLYCEROPHOSPHOLIPIDS C.  ETHER GLYCEROLIPIDS D.  SPHINGOMYELIN E.  GLYCOLIPIDS
E. GLYCOLIPIDS
69
69. Plasmalogens:   A.  TRIACYLGLYCEROL B. GLYCEROPHOSPHOLIPIDS C. ETHER GLYCEROLIPIDS D.  SPHINGOMYELIN E.  GLYCOLIPIDS
C. ETHER GLYCEROLIPIDS
70
70.  Lung surfactant:   A. TRIACYLGLYCEROL B. GLYCEROPHOSPHOLIPIDS C. ETHER GLYCEROLIPIDS D. SPHINGOMYELIN   E. GLYCOLIPIDS
B. GLYCEROPHOSPHOLIPIDS
71
71.  Which of the following is the initial substrate used for fatty acid synthesis? A. Pyruvate B. Lactate   C.  Succinyl-CoA D. Acetyl-CoA
D. Acetyl-CoA
72
72.  Which of the following activates fatty acid synthesis?   A. Palmitoyl-CoA B. Malonyl-CoA C. Citrate D. Oxaloacetate
C. Citrate
73
73.  What do you call the bond between glycerol and a fatty acid?   A. Hydrogen B. Ionic C. Ether D. Ester
D. Ester
74
74.  Which of the following regulates fatty acid transport?   A. Palmitoyl B. Malic enzyme C. Carnitine D. ATP: Citrate Lyase
C. Carnitine
75
75.  Which of the following hormones activate hormone-sensitive lipase? A. Insulin B. Glucagon C. Phosphodiesterase D. Prostaglandin A2
B. Glucagon
76
76.  Cholesterol is transported via:   A. Phospholipids B. Lipoproteins C.  Phosphoproteins D.  Sphingolipids
B. Lipoproteins
77
77.  Cholesterol is the precursor for the following except:   A. Sex hormones B. Vitamin D   C. Vitamin A D. Bile acids
C. Vitamin A
78
78.  Synthesis of cholesterol occurs in the cytosol and in:   A. Golgi apparatus B. Lysosome   C. Endoplasmic reticulum D. Mitochondria
C. Endoplasmic reticulum
79
79.  Free cholesterol is removed from tissues and transported to the liver by:   A. Chylomicrons B. HDL C. LDL D. VLDL
B. HDL
80
80.  The enzyme that catalyzes the rate-limiting step in cholesterol synthesis: A. Thiolase   B. HMG CoA synthase C. HMG CoA reductase D. Isomerase
C. HMG CoA reductase
81
81.  Cholesterol is synthesized in:   A. Liver and intestines only B. RBCs only C. All nucleated cells D. A and B only
C. All nucleated cells
82
82.  The structure of cholesterol is a cyclopentano___ phenanthrene ring A. Dihydro B. Perhydro C. Pentahydro D. Cyclohydro
B. Perhydro
83
83.  In cholesterol structure, the hydroxyl group is located at the:   A. C3 B. C5 C. C6 D. C17
A. C3
84
84.  The storage form of cholesterol:   A. Cholesteryl ester   B. Free cholesterol C. Fatty acid   D. Sterols
Cholesteryl ester
85
85.  The formation of isoprenoid units from mevalonate requires how many ATP? A. None B. 1 C. 2 D. 3
D. 3
86
86.  HMG-CoA is a _____ compound:   A. 5-carbon B. 6-carbon C.  10-carbon D.  15-carbon
B. 6-carbon
87
87.  The source of all carbon atoms in cholesterol:   A. ATP B. Glucose-6-PO4 C. Acetyl CoA D. Propionyl CoA
C. Acetyl CoA
88
88.  HMG CoA reductase is active in the: A. Phosphorylated form   B. Dephosphorylated form C. Both   D. None
B. Dephosphorylated form
89
89.  Which hormone/s downregulates the expression of the gene for HMG CoA reductase? A. Insulin B. Glucagon C. Thyroxine D. A and C
B. Glucagon
90
90.  The statin drugs are structural analogs of HMG CoA and are ____ inhibitors of HMG CoA reductase A. Nonreversible, competitive B. Reversible, competitive C. Reversible, noncompetitive   D. Nonreversible, noncompetitive
B. Reversible, competitive
91
91.  This lipoprotein contains the highest TAG:   A. LDL B. HDL C. VLDL D. Chylomicrons
D. Chylomicrons
92
92. LDL is taken up by the cell via:   A. Transport protein B.  Endocytosis C.  Ligand channel D.  Proton pump
B. Endocytosis
93
93.  True of cholesterol excretion except: A. Small percentage excreted in the feces B. Converted to bile acid and bile salts C. Cholesterol is metabolized to CO2 and H2O   D. none
C. Cholesterol is metabolized to CO2 and H2O
94
94.  7α-hydroxylation of cholesterol requires NADPH, cytochrome P450 and ______ A.    Cu B.    Vitamin C.     Oxygen D.    Zn
C. Oxygen
95
95.  Conjugation of bile acids with taurine or glycine takes place in the:   A. Cytosol B. Mitochondria C. Peroxisomes D. Endosomes
C. Peroxisomes
96
96. Secondary bile acids are formed by:   A.  Conjugation B. Hydroxylation C. Intestinal bacteria activity D.  Salting out
C. Intestinal bacteria activity
97
97.  The rate limiting step in synthesis of steroids from cholesterol is catalyzed by: A. Hydroxylase   B. Reductase C. Desmolase   D.  Isomerase
C. Desmolase
98
98.  The parent compound for all steroid hormones:   A. Pregnenolone B. Progesterone C. Testosterone D. Estrogen
A. Pregnenolone
99
99.  Testosterone is converted to estrogen   by: A. Reductase B. Dehydrogenase C. Aromatase   D. Angiotensinogen
C. Aromatase
100
100.   The principal sterol in the feces is: A. Cholic acid B. Chenodeoxycolic acid C. Glycine   D. Coprostanol
D. Coprostanol

Biochemisty Main (29 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions