Terpenes are unsaturated compounds with the formula (C5H8)n, where n - number of isoprene fragments. What is the name of terpenes type with п = 8?

1. *tetraterpenes

2. triterpenes

3. diterpenes

4. sesquiterpenes

5. monoterpenes

Terpenes are unsaturated compounds with the formula (C5H8)n, where n - number of isoprene fragments. What is the name of terpenes type with п = 6?

1. tetraterpenes

2. *triterpenes

3. diterpenes

4. sesquiterpenes

5. monoterpenes

To which group of lipids do terpenes belong?

1. phospholipids

2. waxes

3. fats

4. *isoprenoids

5. prostaglandins

Which group of compounds does borneol belong?

Which group of compounds does α-pinene belong?

Terpenes are unsaturated compounds with the formula (C5H8)n, where n - number of isoprene fragments. What is the name of terpenes type with п = 4?

1. tetraterpenes

2. triterpenes

3. *diterpenes

4. sesquiterpenes

5. monoterpenes

Terpenes are unsaturated compounds with the formula (C5H8)n, where n - number of isoprene fragments. What is the name of terpenes type with п = 3?

1. tetraterpenes

2. triterpenes

3. diterpenes

4. *sesquiterpenes

5. monoterpenes

Terpenes are unsaturated compounds with the formula (C5H8)n, where n - number of isoprene fragments. What is the name of terpenes type with n = 2?

1. tetraterpenes

2. triterpenes

3. diterpenes

4. sesquiterpenes

5. *monoterpenes

Choose the correct reaction scheme of oxyproline with hydrochloric acid.

1. 

2. *

3. 

4. 

5. 

Choose the correct reaction scheme of histidine with iodo methane.

1. 

2. 

3. *

4. 

5. 

Which monosaccharide is the part of RNA?

1. arabinose

2. fructose

3. glucose

4. deoxyribose

5. *ribose

What are the products of adenosinemonophosphoric acid complete hydrolysis?

Choose peptide-group among the listed below.

1. 

2. *

3. 

4. 

5. 

Which bond is used for construction of primary structure of protein?

1. coordinative

2. semi polar

3. *peptide

4. ionic

5. hydrogen

Which of the following reaction occurs on the aryl moiety of phenylalanine molecule?

1. 

2. *

3. 

4. 

5. 

Which of the following monosaccharides is the part of DNA?

1. mannose

2. ribose

3. glucose

4. *deoxyribose

5. fructose

Choose the acidic amino acids among the listed below.

1. 

2. *

3. 

4. 

5. 

The bond of which type plays the essential role in the nucleobase pairing?

1. semi polar bond

2. ionic bond

3. hydrophobic interactions

4. *hydrogen bond

5. non-polar covalent bond

Which of the following acids forms γ-lactame of the structure listed below?

Which of the following amino acids will form crotonic acid when heated?

Choose the amino acid which forms the 3,6-dimethyl-2,5-dioxopiperazine when heated.

Which of the following reactions can be used for quantitative analyses of α-amino acids?

1. 

2. 

3. 

4. 

5. *

With which of the following reagents 3-aminobutanoic acid will undergo dezamination reaction?

Choose the reaction of oxidative dezamination which proceeds in the human body.

1. 

2. 

3. *

4. 

5. 

Choose the correct scheme of α-aminoisovaleric acid (valine) transformation:

1. *

2. 

3. 

4. 

5. 

Which bond plays the essential role in formation of spiral secondary structure of proteins?

1. hydrophobic interactions

2. semipolar

3. peptide

4. ionic

5. *hydrogen

Among the listed below choose α-amino acids.

1. 

2. 

3. *

4. 

5. 

Choose the structure of ascorbic acid (vitamin C):

1. 

2. 

3. 

4. *

5. 

The interaction of cellulose with excess of acetanhydride in the presence of H2SO4 (catalyst) leads to formation of:

1. cellulose sulfate

2. *cellulose triacetate

3. cellulose xanthogenate

4. cellulose diacetate

5. cellulose acetate

What is the product of reaction of cellulose with excess mixture of nitric and sulfuric acids?

1. cellulose disulfate

2. *cellulose trinitrate (pyroxiline)

3. cellulose sulfate

4. cellulose dinitrate

5. cellulose mononitrate

Choose the name of the following disaccharide.

Choose the product of interaction of β-cellobiose with excess of ¬³¬¯3І.

1. 

2. 

3. *

4. 

5. 

Which is the end-product of acidic hydrolysis of cellulose?

1. α-lactose

2. β-maltose

3. D-fructofuranose

4. *D-glucopyranose

5. D- galactopyranose

Starch consists of amylose and amylopectine which can be hydrolyzed by enzymes to D-glucose. Choose the correct scheme of starch hydrolysis.

1. 

2. *

3. 

4. 

5. 

What is the systematic name of sucrose?

What does symbol «D» in the name of D-(+)glucose means?

D-Glucose in the sodium hydroxide solution in the course of time forms the mixture of D-glucose, D-mannose and D-fructose. What is the name of these transformations?

1. Walden inversion

2. anomerization

3. cyclization

4. *epimerization

5. mutarotation

Amylopectine (the insoluble in water fraction of starch) is the branched polymer, which consists of:

1. 

2. 

3. *

4. 

5. 

Choose the structure of alfa -D-galactopyranose?

1. 

2. 

3. *

4. 

5. 

Which of the following reagents will form osazones with monosaccharides?

1. semicarbazide

2. hydrazine

3. *phenylhydrazine

4. hydroxylamine

5. ammonia

What does the symbol “-“ in the name L-(-)-glucose means?

When D-glucose is treated with sodium hydroxide solution for a few days it forms the mixture of:

1. D– glucose, D– galactose and D– fructose

2. D– glucose, D–galactose and D– mannose

3. *D– glucose, D– mannose and D– fructose

4. D–glucose and D–mannose

5. D–glucose and D–fructose

What is the product of D-fructose oxidation with nitric acid?

1. D–galacturonic acid

2. *D–arabinaric acid

3. D–mannitol

4. D–glucaric acid

5. D–gluconic acid

In the crystals the molecules of monosaccharides are in the:

1. enolic hydroxyl

2. endiol form

3. in all possible tautomeric forms

4. acyclic form

5. *cyclic form

Choose the structure of β-D-galactopyranose?

1. 

2. 

3. *

4. 

5. 

Choose the structure of β-D-ribofuranose?

1. 

2. 

3. 

4. 

5. *

D-glucose and D-mannose are epimers because:

1. have the different configuration of the fifth carbon atom

2. are the members of the same stereochemical range

3. have the different number of chiral carbon atoms

4. *have the different configuration of the second carbon atom

5. have the equal number of chiral carbon atoms

How many asymmetric carbon atoms (chiral C atoms) does the following monosacharide have?

How many stereoisomers does the following aldohexose have?

The mutarotation is caused by:

1. have the equal number of chiral carbon atoms

2. inversion of configuration of the cyclic forms of monosacharides

3. *equilibrium of tautomeric forms conversion in the solution

4. epimeric transformations of monosaccharides

5. inversion of configuration of the last carbon atom

Which of the following monosccharides are hexoses?

1. galactose

2. ribose

3. arabinose

4. *mannose

5. xylose

The change of specific rotation of monosaccharides solution in the course of time is called:

1. enolic hydroxyl

2. epimerization

3. *mutarotation

4. isomerization

5. inversion

How many stereoisomers does the following aldopentose have?