1 курс Структура природных соединений
1. The atomic orbitals for carbon of methane are considered:
A. nonhybridized orbitals;
B. sp hybridized;
C. sp2 hybridized;
D. sp3 hybridized.
2. What is the bond angle between the hybrid orbitals in methane?
A. 180°
B. 120°
C. 115.5°
D. 109.5°
3. The hydrocarbon molecule ethyne has a total of:
A. one sigma bond, two pi bonds;
B. two sigma bonds, four pi bonds;
C. three sigma bonds, two pi bonds;
D. five sigma bonds, one pi bond.
4. Double bonds consist of:
A. one sigma bond, one pi bond.
B. two sigma bonds, one pi bond;
C. one sigma bond, two pi bonds;
D. two sigma bonds, two pi bonds.
A. an aliphatic compound;
B. an aromatic compound;
C. an alicyclic compound;
D. a heterocyclic compound.
A. an aliphatic compound;
B. an aromatic compound;
C. an alicyclic compound;
D. a heterocyclic compound.
7. The structural formula of 2-methyl-1,3-butadiene is
A. CH2=CH-CH=CH2
B. CH2=C(CH3)-CH=CH2
C. CH2=C(C2H5)-CH=CH2
D. CH3CH(CH3)CH2CH3
8. The conjugated system is the molecule of
A. butane;
B. 1,4-pentadiene;
C. 1,2-butadiene;
D. 1,3-pentadiene.
A. a п,п-conjugated system;
B. a p,п-conjugated system;
C. an aromatic system;
D. a cumulated system.
10. The п,п conjugation is typical for:
A. 1,3-butadiene;
B. vinyl chloride;
C. acetic acid;
D. ehanol.
11. The type of conjugation in CH2=CH-CH=O is
A. p,п conjugation;
B. п,п conjugation;
C. aromaticity;
D. p,p conjugation.
12. p,п Conjugation is realized in
A. 1,3-butadiene;
B. naphthalene;
C. acroleine;
D. phenol.
13. According to the Huckel’s rule, the aromatic system contains
A. (2n + 4) pi electrons;
B. (4n + 4) pi electrons;
C. (4n + 2) pi electrons;
D. (2n + 2) pi electrons.
14. The aromatic system of benzene contains
A. 6 pi electrons;
B. 10 pi electrons;
C. 14 pi electrons;
D. 8 pi electrons.
15. The aromatic system of naphthalene contains
A. 6 pi electrons;
B. 10 pi electrons;
C. 14 pi electrons;
D. 8 pi electrons.
16. The aromatic system of anthracene contains
A. 6 pi electrons;
B. 10 pi electrons;
C. 14 pi electrons;
D. 8 pi electrons.
17. The aromatic system of phenanthrene contains
A. 6 pi electrons;
B. 10 pi electrons;
C. 14 pi electrons;
D. 8 pi electrons.
18. The aromatic system of azulene contains
A. 6 pi electrons;
B. 10 pi electrons;
C. 14 pi electrons;
D. 8 pi electrons.
19. Which of the following compounds is aromatic?
A. cyclohexane;
B. 1,3,5,7-cyclooctatetraene;
C. 1,3,5-hexatriene;
D. purine.
20. The molecule that has a chiral carbon is:
A. 1-chloropropane;
B. 1-chloro-2-bromopropane;
C. 2-bromobutane;
D. 3-chloropentane.
21. Which of the following represents a racemic mixture?
A. 75% (R)-2-butanol, 25% (S)-2-butanol;
B. 25% (R)-2-butanol, 75% (S)-2-butanol;
C. 50% (R)-2-butanol, 50% (S)-2-butanol;
D. none of the above.
22. What is the correct IUPAC name for the following compound
| A. 2-ethylpentane;
B. 4-ethylpentane;
C. 3-methylhexane;
D. 4-methylhexane.
23. The sum of the coefficients in the balanced reaction for the combustion of butane is
A. 33
B. 18
C. 16
D. 15
24. Which conformation is typical for cyclopentane?
A. chair (C);
B. envelope (E);
C. boat (B);
D. twist (T).
25. Which conformation of butane is the most stable one?
A. eclipsed;
B. gauche;
C. skew;
D. anti.
26. The most stable conformation of cyclohexane is the:
A. Hayworth form;
B. sawhorse form;
C. Newman form;
D. chair form.
27. In the chlorination of alkanes, the first step in which chlorine free radicals are produced is called:
A. initiation;
B. activation;
C. propagation;
D. deactivation.
28. The correct IUPAC name for the following compound is
| A. cis-2-pentene;
B. trans-2-pentene;
C. cis-3-pentene;
D. trans-3-pentene.
29. In the reaction of ethane and HCl, the H+ ion acts as the:
A. nucleophile;
B. electrophile;
C. carbanion;
D. carbonium ion.
30. Which one is the major product formed in the reaction of HCl with 2-methyl-2-butene?
A. 2-chloro-2-methylbutane;
B. 3-chloro-2-methylbutane;
C. 2-chloro-2-methyl-2-butene;
D. 3-chloro-2-methyl-2-butene.
31. This molecular model is called
| A. ball-and-stick;
B. space-filling;
C. stick model;
D. ball model.
32. The major product in the reaction with aqueous solution of sodium hydroxide is
| A. 1-propene;
B. 2-propene;
C. 2-propanol;
D. 1-propanol.
33. The major product in the reaction with sodium hydroxide in ethanol is
| A. 1-propene;
B. 2-propene;
C. 2-propanol;
D. 1-propanol.
34. The SN1 mechanism is typical for:
A. primary alkyl halides and alcohols;
B. alkenes;
C. arenes;
D. tertiary halides and alcohols.
35. The SN2 mechanism is typical for:
A. primary alkyl halides and alcohols;
B. alkenes;
C. arenes;
D. tertiary halides and alcohols.
36. Nitration of toluene gives rise to:
A. m-nitrotoluene;
B. p-nitrotoluene;
C. benzoic acid;
D. nitrobenzene.
37. Oxidation of butane yields:
A. Acetone;
B. ethane;
C. ethanol;
D. ethanoic acid.
38. S-adenosylmethionine forms in vivo as a result of:
A. nucleophilic substitution reaction;
B. electrophilic substitution reaction;
C. nucleophilic addition reaction;
D. elimination reaction.
39. 1,1-dimethoxypropane may be prepared from:
A. propanal and ethanol;
B. propanol and methanal;
C. propanal and methanol;
D. propenal and methanol.
40. Cyclic hemiacetal may be formed from:
A. 2-hydroxyaldehydes;
B. 3-hydroxyaldehydes;
C. 3-hydroxyketones;
D. 4-hydroxyaldehydes.
41. The major product of the reaction between tert-butyl chloride and water via an SN1 mechanism is:
A. 2-butene;
B. 3-butene;
C. 3-butanol;
D. tert-butyl alcohol.
42. The oxidation of a secondary alcohol produces a(n):
A. carboxylic acid;
B. aldehyde;
C. ketone;
D. ester.
43. Which form is the most stable
| A. I
B. II
C. They are equally stable
D. Both are very unstable.
44. Which one is the most acidic?
A. Hexanol;
B. Phenol;
C. Water;
D. Diisopropyl ether.
45. The characteristic reaction of carboxylic acids is:
A. electrophilic addition;
B. electrophilic substitution;
C. nucleophilic addition;
D. nucleophilic substitution.
46. The reactions of aldehydes or ketones and the reactions of carboxylic acids are similar in that:
A. substitution reactions tend to occur;
B. addition reactions tend to occur;
C. nucleophilic attack of the carbonyl carbon occurs;
D. two of the above occur.
47. The correct name of the following compound is: HOOC-CH2-COOH
A. malonic acid;
B. succinic acid;
C. maleic acid;
D. glutaric acid.
48. The correct name of the following compound is
| A. malonic acid;
B. succinic acid;
C. maleic acid;
D. glutaric acid.
49.The correct name of the following compound is
| A. malonic acid;
B. succinic acid;
C. maleic acid;
D. glutaric acid.
50. The correct name of the following compound is
| A. malonic acid;
B. succinic acid;
C. maleic acid;
D. glutaric acid.
51. The correct name of the following compound is
| A. catechol;
B. dopa;
C. dopamine;
D. adrenaline.
52. The correct name of the following compound is:
| A. catechol;
B. dopa;
C. dopamine;
D. adrenaline.
53. The correct name of the following compound is
| A. catechol;
B. dopa;
C. dopamine;
D. adrenaline.
54. The correct name of the following compound is
| A. catechol;
B. dopa;
C. dopamine;
D. adrenaline.
55. Lactides are formed from:
A. Alpha-hydroxy acids;
B. Alpha-amino acids;
C. Beta-amino acids;
D. Gamma-hydroxy acids.
56. Diketopiperazines are formed from:
A. Alpha-hydroxy acids;
B. Alpha-amino acids;
C. Beta-amino acids;
D. Gamma-hydroxy acids.
57. Lactams are formed from:
A. Alpha-hydroxy acids;
B. Alpha-amino acids;
C. Gamma-amino acids;
D. Gamma-hydroxy acids.
58. Lactims may be produced from:
A. diketopiperazines;
B. lactides;
C. lactams;
D. lactones.
59. Lactones are formed from:
A. Alpha-hydroxy acids;
B. Alpha-amino acids;
C. Beta-amino acids;
D. Gamma-hydroxy acids.
60. The correct name of the following formula is
| A. paracetamol;
B. Novocain;
C. phenacetin;
D. norsulfazole.
61. The correct name of the following compound is
| A. paracetamol;
B. Novocain;
C. phenacetin;
D. norsulfazole.
62. Aliphatic amino acid is:
A. tryptophan;
B. alanine;
C. tyrosine;
D. histidine.
63. Aromatic amino acid is:
A. tryptophan;
B. alanine;
C. tyrosine;
D. histidine.
64. Heterocyclic amino acid is:
A. tryptophan;
B. alanine;
C. tyrosine;
D. valine.
A. tryptophan;
B. alanine;
C. tyrosine;
D. histidine.
66. Acidic amino acid is:
A. alanine;
B. glutamic acid;
C. lysine;
D. isoleucine.
67. A sequence of amino acids in the chain signifies the:
A. primary structure of peptides and proteins;
B. secondary structure of proteins and long-chain peptides;
C. tertiary structure of proneins;
D. quarternary protein structure.
68. Hydrogen bonding between peptide groups of the chain defines the:
A. primary structure of peptides and proteins;
B. secondary structure of proteins and long-chain peptides;
C. tertiary structure of proneins;
D. quarternary protein structure.
69. Glutathione structure is described by the following amino acid sequence:
A. Glu-Gly-Cys;
B. Gly-Glu-Cys;
C. Glu-Cys-Gly;
D. Gly-Cys-Glu.
A. dipeptide;
B. tetrapeptide;
C. pentapeptide;
D. nonapeptide.
71. Oxytocin is referred to as:
A. neuropeptides;
B. immunopeptides;
C. tissue hormones;
D. intestinal peptides.
72. Tuftsin is referred to as:
A. neuropeptides;
B. immunopeptides;
C. tissue hormones;
D. intestinal peptides.
73. Bradykinin is referred to as:
A. neuropeptides;
B. immunopeptides;
C. tissue hormones;
D. intestinal peptides.
74. Secretin is referred to as:
A. neuropeptides;
B. immunopeptides;
C. tissue hormones;
D. intestinal peptides.
75. Neurotensin is referred to as:
A. hypothalamic hormonal factors;
B. pituitary hormones;
C. opioid peptides;
D. non-opioid peptides.
76. Peptide which is involved in the biochemistry of the immune system is:
A. substance P;
B. tuftsin;
C. kallidin;
D. glucagon.
77. N-terminal amino acid in Met-enkephalin is:
A. Glycine;
B. Phenylalanine;
C. Methionine;
D. Tyrosine.
78. The first local anesthetic is:
A. anabasine;
B. morphine;
C. nicotine;
D. cocaine.
79. Nonreducing disaccharide is:
A. maltose;
B. cellobiose;
C. lactose;
D. sucrose.
80. The total number of carbons in glucose is:
A. 4
B. 6
C. 8
D. 12
81. The total number of hydroxyl groups in the sucrose molecule is equal to:
A. 10
B. 9
C. 8
D. 7
82. The correct name of the following structure is
| A. Alpha-D-glucopyranose;
B. Beta-D-glucopyranose;
C. Alpha-D-glucofuranose;
D. Beta-D-glucofuranose.
83. The correct name of the following structure is
| A. C1-Alpha-D-glucopyranose;
B. C1-Beta-D-fructopyranose;
C. C1-Alpha-D-fructofuranose;
D. C1-Beta-D-glucopyranose.
84. Chitin is referred to as:
A. animal homopolysaccharides;
B. plant homopolysaccharides;
C. animal heteropolysaccharides;
D. plant heteropolyaccharides.
85. On hydrolysis of starch, we finally get:
A. glucose;
B. fructose;
C. both glucose and fructose;
D. sucrose.
86. Chondroitin sulfates contain:
A. glucose residues;
B. N-acetyl-D-galactosamine;
C. N-acetyl-D-glucosamine;
D. Galacturonic acid residues.
A. polymers of nucleosides;
B. polymers of nucleotides;
C. polymers of purine bases;
D. polymers of pyrimidine bases.
87. Which of the following is responsible for the heredity character of cell:
A. RNA;
B. DNA;
C. proteins;
D. hormones.
88. The energy stored in the cells of a living body is in the form of:
A. fats;
B. proteins;
C. glucose;
D. ATP.
89. Glucose is stored in our body as:
A. carbohydrates;
B. glycogen;
C. fats;
D. lipids.
90. Which of the following compounds is an aromatic one
| A. I
B. II
C. III
D. IV.
91. The constituent part of fats is:
A. glycogen;
B. glycerol;
C. glyceraldehydes;
D. carnitine.
92. Saturated fatty acid is:
A. stearic;
B. oleic;
C. linoleic;
D. arachidonic.
93. Oxidation of unsaturated phospholipids gives rise to:
A. glyceraldehyde and phosphoric acid formation;
B. glycolipids;
C. shortened-chain acids;
D. glucose.
A. waxes;
B. sterols;
C. oils;
D. phospholipids.
95. The parent structure of steroids is:
A. glycerol;
B. phosphatidic acid;
C. stearic acid;
D. gonane.
A. progesterone;
B. estradiol;
C. prednisolone;
D. androsterone.
97. Estradiol contains hydroxyl groups:
A. one;
B. two;
C. three;
D. none.
98. The number of hydroxyl groups in menthol is:
A. 1
B. 2
C. 3
D. 0
99. Deficiency of vitamin E causes:
A. beri-beri;
B. scurvy;
C. antifertility;
D. none.
100. The correct name of the following drug is
| A. Novocain;
B. Analgin;
C. Amidopyrin;
D. Phenacetin.
101. The consequence of stages in the electrophilic substitution mechanism is as follows: 1). pi complex formation; 2). generating the electrophilic particle; 3). product formation and catalyst regeneration; 4). sigma complex formation.
2, 1, 4, 3
102. Establish the correspondence between the number of pi electrons and the compound 1). 6; 2). 10; 3). 14; 4). 8.
2. naphthalene;
4. 1,3,5,7-cyclooctatetraene;
3. phenanthrene;
1. pyrrole.
103. Establish the correspondence between the compound and number of pi electrons in it 1). pyrrole; 2). phenanthrene; 3). 1,3,5,7-cyclooctatetraene; 4). naphthalene.
1. 6 pi;
3. 8 pi;
4. 10 pi;
2. 14 pi.
104. Establish the correspondence between the compound and number of pi electrons in it 1). anthracene; 2). azulene; 3). benzene; 4). 1,3,5,7-cyclooctatetraene.
3. 6 pi;
2. 10 pi;
4. 8 pi;
1. 14 pi.
105. Which of the following statements is correct for the 1,3-butadiene molecule?
A. it contains sp2- and sp3-hybridized carbons;
B. all sigma bonds lie in a plane
C. it is a p,п-conjugated system;
D. conjugation results in the shortening of all carbon-carbon bonds;
E. it possesses enhanced thermodynamic stability.
106. Establish the correspondence between the compound and its conformation 1). cyclopentane; 2). cyclohexane; 3). cyclobutane; 4). cyclopropane.
4. flat cycle;
1. envelope;
3. twist;
2. boat.
107. Установите последовательность. The consequence of stages in the electrophilic addition mechanism is as follows: 1). pi complex formation; 2). product formation; 3). sigma complex formation.
1, 3, 2
108. Establish the correspondence between the compound and its type 1). 1,3-butadiene; 2). cyclopentene; 3). cis-2-butene; 4). methylacetylene.
3. alkene;
1. diene;
4. alkyne;
2. cycloalkene.
109. The most stable carbocation is:
A. primary;
B. secondary;
C. tertiary;
D. quaternary.
110. The least stable carbocation is:
A. primary;
B. secondary;
C. tertiary;
D. quaternary.
111. The number of hydrogens in propene is:
A. 4;
B. 5;
C. 6;
D. 8.
112. The number of hydrogens in butene is:
A. 4;
B. 5;
C. 6;
D. 8.
113. The correct name of the following formula is
| A. aziridine;
B. pyrrole;
C. pyridine;
D. pyrazole.
114. The correct name of the following formula is
| A. aziridine;
B. pyrrole;
C. pyridine;
D. pyrazole.
115. The correct name of the following formula is
| A. aziridine;
B. pyrrole;
C. pyridine;
D. pyrazole.
116. The correct name of the following formula is
| A. aziridine;
B. pyrrole;
C. pyridine;
D. pyrazole.
117. The correct name of the following formula is
| A. pyrazole;
B. imidazole;
C. thiazole;
D. oxazole.
118. The correct name of the following formula is
| A. pyrazole;
B. imidazole;
C. thiazole;
D. oxazole.
119. The correct name of the following formula is
| A. pyrazole;
B. imidazole;
C. thiazole;
D. oxazole.
120. The correct name of the following formula is
| A. pyrimidine;
B. purine;
C. pyrazine;
D. piperidine.
121. The correct name of the following formula is
| A. pyrimidine;
B. purine;
C. pyrazine;
D. piperidine.
122. The correct name of the following formula is
| A. pyrimidine;
B. purine;
C. pyrazine;
D. piperidine.
123. The correct name of the following formula is
| A. pyrimidine;
B. purine;
C. pyrazine;
D. piperidine.
124. The correct name of the following formula is
| A. pyrimidine;
B. purine;
C. tetrahydropyran;
D. piperidine.
125. The correct name of the following formula is
| A. indole;
B. purine;
C. tetrahydropyran;
D. piperidine.
126. The number of pi electrons in porphyrins is considered to be equal to ###.
...
127. The ####### ring is a structural element of porphyrins.
...
128. The ###### ring is the parent structure of tryptophan.
...
129. A disturbance in metabolism of serotonin leads to #####.
...
130. Tryptophan is decarboxilated in vivo to give #####.
...
131. The hemoglobin molecule consists of ### (number) hemoglobin subunits.
...
132. The ### and ### combine to give rise to hemoglobin.
...
133. Pyrazole and imidazole are referred to five-membered rings with ### (number) nitrogens.
...
134. Analgin contains heterocyclic system of ###.
...
135. The analgin molecule contains ##### (word) methyl groups.
...
136. Amidopyrin contains ##### (word) methyl groups.
...
137. Decarboxilation of histidine gives rise to #####.
...
138. Two pyridine derivatives which relate to vitamine PP are ##### acid and #####.
...
139. The lactim form of thymine contains ### (word) hydroxyl groups
...
140. The DNA molecule does not contain #####.
...
141. The name of the following amino acid is
| A. glycine;
B. alanine;
C. valine;
D. leucine.
142. The name of the following amino acid is
| A. glycine;
B. alanine;
C. valine;
D. leucine.
143. The name of the following amino acid is
| A. glycine;
B. alanine;
C. valine;
D. leucine.
144. The name of the following amino acid is
| A. glycine;
B. alanine;
C. valine;
D. leucine.
145. The name of the following amino acid is
| A. isoleucine;
B. serine;
C. threonine;
D. cysteine.
146. The name of the following amino acid is
| A. isoleucine;
B. serine;
C. threonine;
D. cysteine.
147. The name of the following amino acid is
| A. isoleucine;
B. serine;
C. threonine;
D. cysteine.
148. The name of the following amino acid is
| A. isoleucine;
B. serine;
C. threonine;
D. cysteine.
149. The name of the following amino acid is
| A. isoleucine;
B. serine;
C. threonine;
D. proline.
150. The name of the following amino acid is
| A. isoleucine;
B. serine;
C. methionine;
D. proline.
151. The name of the following amino acid is
| A. aspartic acid;
B. asparagine;
C. glutamic acid;
D. glutamine.
152. The name of the following amino acid is
| A. aspartic acid;
B. asparagine;
C. glutamic acid;
D. glutamine.
153. The name of the following amino acid is
| A. aspartic acid;
B. asparagine;
C. glutamic acid;
D. glutamine.
154. The name of the following amino acid is
| A. aspartic acid;
B. asparagine;
C. glutamic acid;
D. glutamine.
155. The name of the following amino acid is
| A. lysine;
B. histidine;
C. arginine;
D. tryptophan.
156. The name of the following amino acid is
| A. lysine;
B. histidine;
C. arginine;
D. tryptophan.
157. The name of the following amino acid is
| A. lysine;
B. histidine;
C. arginine;
D. tryptophan.
158. The name of the following amino acid is
| A. lysine;
B. histidine;
C. arginine;
D. tryptophan.
159. The name of the following amino acid is
| A. lysine;
B. phenylalanine;
C. arginine;
D. tyrosine.
160. The name of the following amino acid is
| A. lysine;
B. phenylalanine;
C. arginine;
D. tyrosine.
161. Non-reducing disaccharide is:
A. maltose
B. cellobiose
C. lactose
D. sucrose.
162. Epimer of D-glucose is:
A. D-mannose
B. D-cellobiose
C. D-fructose
D. D-ribose.
163. Number of stereoisomers for aldohexoses is:
A. 4
B. 6
C. 8
D. 16
164. Number of stereoisomers for ketohexoses is:
A. 4
B. 6
C. 8
D. 16
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
166. Starch is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
167. Cellulose is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
168. Fiber is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
169. Glycogen is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
170. Chitin is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
171. Lactose is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
172. Maltose is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
173. Cellobiose is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
174. Sucrose is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
175. Ribose is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
176. Mannose is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
177. Fructose is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
178. Deoxyribose is referred to as:
A. monosaccharides
B. disaccharides
C. oligosaccharides
D. polysaccharides.
179. D-glucopyranose is in the … conformation:
A. envelope
B. twist
C. chair
D. flat
180. The name of the following compound is
| A. D-glucaric acid
B. D-glucose
C. D-gluconic acid
D. D-glucuronic acid.
181. The name of the following compound is
| A. D-glucaric acid
B. D-glucose
C. D-gluconic acid
D. D-glucuronic acid.
182. The name of the following compound is
| A. D-glucaric acid
B. D-glucose
C. D-gluconic acid
D. D-glucuronic acid.
183. The name of the following compound is
| A. D-glucaric acid
B. D-glucose
C. D-gluconic acid
D. D-glucuronic acid.
184. The amount of amylose fraction (%) in starch is:
A. 10
B. 15
C. 50
D. 85
185. The amount of amylopectin fraction (%) in starch is:
A. 10
B. 15
C. 50
D. 85
186. Proteoglycan aggregates participate in the formation of:
A. muscle tissue
B. nervous tissue
C. cartilaginous tissue
D. adipose tissue.
187. The dipeptide is called
| A. Ala-Ser
B. Ser-Ala
C. Gly-Ala
D. Ala-Gly.
188. The tripeptide is called
| A. Ala-Ser-Gly
B. Phe-Gly-Ala
C. Met-Ala-Gln
D. Gln-Ala-Gln.
189. The dipeptide is called
| A. Ala-Ser
B. Ser-Ala
C. Gly-Ala
D. Ala-Gly.
190. It is possible to obtain from ethanal the following amino acid:
A. glycine
B. alanine
C. leucine
D. valine
191. It is possible to obtain from 2-methylpropanal the following amino acid:
A. glycine
B. alanine
C. leucine
D. valine
192. Pyruvic acid in vivo gives rise to:
A. glycine
B. alanine
C. leucine
D. valine.
193. The amino acid sequence in glutathione is as follows:
A. Glu-Gly-Cys
B. Gly-Cys-Glu
C. Glu-Cys-Gly
D. Cys-Gly-Glu.
A. tetrapeptide
B. pentapeptide
C. octapeptide
D. nonapeptide.
195. Kallidin is referred to:
A. neuropeptides
B. immunopeptides
C. tissue hormones
D. vasoactive intestinal peptides.
196. The secondary structure of DNA was discovered by J. Watson and F. Crick in:
A. 1965
B. 1956
C. 1953
D. 1970
197. Myricyl palmitate is referred to as:
A. triacylglycerols
B. waxes
C. sterides
D. phosphatides.
198. Beeswax is referred to as:
A. triacylglycerols
B. waxes
C. sterides
D. phosphatides.
199. Plasmalogens make up about … of the total quantity of lipids in CNS.
A. 10 %
B. 20 %
C. 30 %
D. 1 %.
200. How many carbon atoms does the cholesterol molecule contain?
A. 22
B. 26
C. 27
D. 29
201. Cholesterol contains ## carbon atoms.
...
202. The cholic acid contains ### (numder) hydroxyl groups.
...
203. The cholic acid contains ### (word) carboxylic group(s).
...
204. The cholic acid contains ### (numder) hydroxyl groups and ### (word) carboxylic group(s).
...
205. One of the major products of lipid oxidation of polyunsaturated phospholipids is:
A. acetic acid
B. malonic dialdehyde
C. carbon dioxide
D. ammonia.
206. The total sum of coefficients in the left parts of oxidation reactions of methane and propane is (consider the oxygen molecules in the reactions):
A. 5
B. 7
C. 8
D. 9.
207. Corticosterone is referred to as:
A. sterols
B. steroids
C. sterides
D. sex hormones.
A. beeswax
B. estrone
C. vitamin E
D. terpens.
A. sterols and steroids
B. sterides and sterols
C. sterides and steroids
D. bile acids and steroid hormones.
210. The name of the following compound is
| A. menthane
B. bornane
C. carane
D. camphor
211. The name of the following compound is
| A. menthane
B. bornane
C. carane
D. camphor
212. Myrcene is referred to as:
A. monoterpens
B. diterpens
C. triterpens
D. tetraterpens.
213. Squalene is referred to as:
A. monoterpens
B. diterpens
C. triterpens
D. tetraterpens.
214. Limonene is referred to as:
A. monoterpens
B. diterpens
C. triterpens
D. tetraterpens.
215. Anabasine is referred to as:
A. quinoline alkaloids
B. pyridine alkaloids
C. isoquinoline alkaloids
D. tropane alkaloids.
