siksiz sorular

Question 1

147. Specify the oxidation product of beta -m ethylpyridine

Answer 1

nicotonic acid

Question 2

146. Specify the amino acid that is a microbial growth factor and is involved in the synthesis
     of folic acid.

Answer 2

Para-amino benzoic acid(PABA)

Question 3

151. What reagent can be used to determine the number of carboxyl groups in tartaric acid ?

Answer 3

Standard sodium hydroxide (NaOH) solution or KOH

Question 4

153. How many chiral centers does tartaric acid have?

Answer 4

2

Question 5

154. What reactions are typical for aromatic heterocyclic compounds?

Answer 5

S E ( electrophilic
substitution)

Question 6

157. Specify a six-membered heterocycle with one heteroatom

Answer 6

pyridine

Question 7

189. Identify the substance that does not belong to monosaccharides. Glucose, Fructose,
     Galactose, Ribose, Deoxyribose -this are monosaccharides-

Answer 7

Glucose, Fructose,
Galactose, Ribose, Deoxyribose -this are monosaccharides-

Question 8

189. In what cases are polyols formed from monosaccharides?

Answer 8

When the carbonyl group is
reduce

Question 9

223. Which disaccharide enters V compound amylose ?

Answer 9

maltose

Question 10

224. Which one? form has amylose ?

Answer 10

Linear

Question 11

227. What carbohydrate does not have reducing properties?

Answer 11

sucrose, starch, cellulose

Question 12

230. Purple coloration occurs when the protein is exposed to:

Answer 12

biuret

Question 13

231. Aggregation state of amino acids: /

Answer 13

Amino acids aggregate state In solid state
(crystalline form) ,, In n.u. solid crystalline substances, colorless

Question 14

231. The presence of what compounds in proteins is determined using the xanthoprotein
     reaction?

Answer 14

Aromatic (tyrosine, tryptophan, phenylalanine)

Question 15

233. What is observed when proteins react with ninhydrin?

Answer 15

blue or violet

Question 16

235. What qualitative reaction is used to determine sulfur-containing amino acids in
     peptides and proteins?

Answer 16

lead acetate test (formation of black PbS precipitate), Fohl’s reaction

Question 17

236. The main pathway for biosynthesis of α-amino acids from α-oxo acids. /Basic path
     biosynthesis a- amino acids from a- oxoacids ….:

Answer 17

transamination

Question 18

What color is formed when aromatic amino acids are detected by the xanthoprotein
reaction? Yellow coloring

Answer 18

Yellow coloring

Question 19

Aminoacetic acid in aqueous solution is found mainly in the following form

Answer 19

Zwitter ion -bipolar ion

Question 20

The primary structure of a protein molecule is a sequence of amino acids linked by …?

Answer 20

peptide bonds

Question 21

What are the forms of nucleic bases under physiological conditions?

Answer 21

Keto- amino
tautomerism

Question 22

Nucleosides are

Answer 22

Pentose + nitrogenous bases via N - glycosidic bond

Question 23

What are the substances called that interfere with biochemical processes as a result of a
close, competitive in its chemical structure connection of metabolism with endogenous
products?

Answer 23

antimetabolites

Question 24

344. Through what bonds do nucleotides form chains?

Answer 24

phosphodiester bonds

Question 25

Type of chemical bond in nucleosides between a nitrogenous base and a carbohydrate residue

Answer 25

N-glycosidic bond

Question 26

What is the cardiac stimulant camphor/ what is camphor a derivate of….?

Answer 26

terpenodis-pinen

Question 27

The acids that are part of the saponifiable lipids have the configuration: / The configuration of the acids that are saponifiable lipids is:

Answer 27

CIS

Question 28

Indicate the essential acids important for the human body ;

Answer 28

linoleic, linolenic.

Question 29

Specify the nitrogen-containing component of lecithin

Answer 29

Choline

Question 30

Cholesterol-lowering acids:

Answer 30

Cholic acid and chenodeoxycholic acid

Question 31

What are the functions of sphingolipids in the body?

Answer 31

membrane structure, nerve insulation (myelin), cell signaling, and cell recognition

Question 32

Which lipid contains ether bonds?

Answer 32

Waxes

Question 33

The main product of saponification of fats.

Answer 33

glycerol & soap

Question 34

What experiment will allow us to test the light oxidation of terpenes?

Answer 34

Wagner (or Bayer) reaction

Question 35

What product is formed during the hydrogenation of vegetable oils?

Answer 35

trans/saturated fats

Question 36

391. Anesthesin and Novocaine are derivatives of:

Answer 36

Para-aminobenzoic acid (paba)