Test on the topic “Proteins”.

Choose one correct answer:

1. Determine the characteristic by which all of the following compounds, except one, are combined into one group. Indicate the “extra” chemical compound among them.

1) pepsin 5) catalase

2) collagen 6) maltase

3) keratin 7) hemoglobin

2. Salts heavy metals(mercury, arsenic, lead) are poisons for the body. They bind to the sulfide groups of proteins. Name the structure of proteins that is destroyed under the influence of heavy metal salts.

1) primary 3) tertiary

2) secondary

3. Name a protein that performs an enzymatic function.

1) growth hormone 4) actin

2) fibrin 5) trypsin

3) insulin

4. In which answer all the named chemical compounds belong to

amino acids?

1) tubulin, collagen, lysozyme

2) lysine, tryptophan, alanine

3) cholesterol, progesterone, stearic acid

4) valine, maltase, keratin

5) sucrose, lactose, glycine

6) adenine, thymine, guanine

5. Proteins as polymers have features that significantly differ from

some polysaccharides, such as glycogen and starch. Find these features among

and indicate a feature that is NOT such a feature.

1) very big number monomers

2) are linear polymers

3) different structure of monomers

4) protein monomers differ from each other

6. The primary structures of different proteins differ from each other in a number of ways. Find these features among the answers and indicate the structural feature in which different proteins, on the contrary, are similar to each other.

1) number of amino acids

2) quantitative ratio of amino acids different types

3) the sequence of amino acids connecting to each other

4) the structure of chemical bonds involved in the formation

amino acid sequences

7. Name the organic compounds that are contained in the cell in the greatest amount

quantity (in% of wet weight).

1) carbohydrates

2. 4) nucleic acids

   5) low molecular weight organic substances

8. Name the functional groups of neighboring amino acids in the protein, between

which forms a peptide bond.

1) radicals 4) carboxyl groups

2) carboxyl group and amino group 5) carboxyl group and radical

3) radical and hydrogen ion 6) amino group and radical

9. Name the protein that performs the receptor function.

1) lysozyme 3) prothrombin

2) pepsin 4) rhodopsin

10. Name the protein that performs the receptor function.

1) collagen 3) hemoglobin

3) fibrin 4) insulin

11. Name a protein that primarily performs a structural function.

1) keratin 4) lipase

2) catalase 5) growth hormone

3) nuclease

12. Name a protein that primarily performs a transport function.

1) collagen 4) hemoglobin

2) keratin 5) myoglobin

13. Name the main function performed by such proteins, keratin,

collagen, tubulin.

1) motor 4) transport

2) protective 5) construction

3) enzymatic

14. Name a protein that primarily performs a motor function.

1) actin 4) catalase

2) fibrin 5) lipase

3) thrombin 6) myoglobin

15. Name the function performed by the bulk of proteins in plant seeds and

animal eggs.

1) protective 4) motor

2) construction 5) enzymatic

3) storage

16. In which answer are all the named chemical compounds proteins?

1) sucrose, insulin, uracil

2) phenylalanine, glucagon, pepsin

3) glucose, fructose, glycogen

4) catalase, glucagon, keratin 5) ribose, thymine, actin

17. Determine the sign by which all of the following chemicals

compounds, except one, are combined into one group. Specify this "extra"

among them is a chemical compound.

1) alanine 5) actin

2) valine 6) leucine

3) glycine 7) cysteine

4) tryptophan

18. Name a protein that performs an enzymatic function.

1) catalase 4) glucagon

2) prothrombin 5) keratin

3) tubulin

19. Name the protein that is part of the microtubules of flagella and cilia,

centrioles and spindle movements.

1) keratin 3) myosin

2) tubulin 4) collagen

20. Name the hair protein.

1) keratin 3) myosin 5) actin

2) tubulin 4) collagen 6) fibrin

21. What is a protein monomer?

1) glucose 4) nucleic acid

2) nucleotide 5) nitrogenous base

3) amino acid

22. How many types of amino acids are included in natural proteins?

1) 10 3) 20 5) 46

2) 15 4) 25 6) 64

23. What happens to the tertiary structure of transport and enzymatic proteins

while they perform their functions

1) does not change

2) are destroyed

3) slightly modified

4) becomes more complicated

5) acquires a quaternary structure

6) goes into the secondary structure

24. Name the protein that makes up horns, hooves, claws, feathers and hair

animals.

1) collagen 3) tubulin

2) keratin 4) myosin

25. Name the protein that was the first to be synthesized artificially.

1) insulin 3) catalase

2) hemoglobin 4) interferon

26. Give an example of a protein consisting of several polypeptide chains.

1) trypsin 3) myoglobin

2) pepsin 4) collagen

27. Name all the chemical groups that are the same in all amino acids

constituents of natural proteins.

1) only amino group and carboxyl group

2) hydrogen and radical

3) hydrogen, amino group and carboxyl group

4) radical, amino group and carboxyl group

28. What is the term for the loss of a protein’s natural spatial

structures?

1) spiralization 4) dispersion

2) condensation 5) reparation

3) denaturation 6) degeneration

29. Name the protein that forms the basis of tendons, ligaments and intercellular

bone tissue substances.

1) keratin 4) collagen

2) tubulin 5) actin

3) myosin 6) fibrin

30. Give an example of a protein consisting of several polypeptide chains.

1) myoglobin 3) trypsin

2) hemoglobin 4) pepsin

31. Which chemical compounds must have the following

chemical groups: amino group and carboxyl group?

3) nucleic acids 6) polysaccharides

32. What type of chemical bonds is a peptide bond?

1) ionic 3) covalent

2) hydrogen 4) hydrophobic

33. Name a protein that primarily performs a structural (construction) function.

1) pepsin 3) insulin

2) collagen 4) myosin

34. What term is used to describe the process of formation of the primary structure of a protein?

1) transcription 4) dissimilation

2) translation 5) polymerization

3) reduplication

35. Name proteins that primarily perform a structural (construction) function.

1) pepsin, trypsin 4) collagen

3) insulin, glucagon

36. What is the name of the protein structure, which is a helix in which

is the chain of amino acids folded?

1) primary 3) tertiary

2) secondary 4) quaternary

37. Which group of organic compounds include alanine, valine, lysine, tryptophan?

1) nitrogenous bases 4) amino acids

2) nucleotides 5) fatty acids

3) nucleic acids

38. Name the hormone proteins that perform regulatory functions.

1) pepsin, trypsin 4) collagen, keratin

2) hemoglobin, carbonic anhydrase 5) actin, myosin

3) insulin, glucagon

39. Indicate a chemical group that is NOT included as a radical in any

one of the amino acids found in natural proteins.

1) –SH 4) –H 2 PO 4

2) –COOH 5) –H

40. Name the chemical group in the amino acid molecule that gives

Some amino acids have hydrophilic properties, while others have hydrophobic properties.

1) amino groups 3) carboxyl group

2) radical 4) hydroxyl group

Biology 10th grade. Topic: Squirrels.

1.. Living things differ from non-living things:
A) composition inorganic substances
B) the presence of catalysts

B) metabolism
D) the interaction of molecules with each other

2 Proteins are:

A) monomers; B) biopolymers; B) monosaccharides; D) polysaccharides.

3. Protein monomers are:

A) nucleotides; B) amino acids; B) nitrogenous bases.

4. Amino acids differ:

A) amino group, B) carboxyl group; B) radical.

5. Protein molecules include:

A) only amino acids

B) amino acids and sometimes metal ions

B) amino acids and sometimes lipid molecules

D) amino acids and sometimes carbohydrate molecules

6. The structure of a protein molecule, which is determined by the sequence of amino acid residues: A) primary; B) secondary; B) tertiary; D) quaternary.

7. The secondary structure of the protein is supported by bonds:

A) only peptide;

B) only hydrogen;

B) disulfide and hydrogen;

D) hydrogen and peptide;

8. The tertiary structure of a protein is formed by bonds

A – hydrogen, peptide, hydrophobic
B – peptide, hydrophobic, ionic
B – hydrogen, hydrophobic, ionic.

9. The least stable protein structures are:

A) primary and secondary

B) secondary and ternary

B) tertiary and quaternary

D) quaternary and secondary

10. Enzymes perform the following functions:

A) are the main source of energy;

B) accelerate bio chemical reactions;

B) transport oxygen;

D) participate in a chemical reaction, turning into other substances.

11. The biological activity of a protein is determined by its structure:

A) only primary;

B) only secondary;

B) always quaternary;

D) quaternary, sometimes tertiary.

Why are only 20 of the 200 amino acids contained in protein?

The process of denaturation is...?

* Describe the functions of proteins.

Test No. 1 “Structure and functions of proteins” - 1 option.

Rear No. 1 one right answers

I. What compounds are monomers of protein molecules?

a) glucose b) glycerol c) fatty acids

e) amino acids

2. How many of the known amino acids are involved in protein synthesis?

a) 20 b) 23 c) ​​100
H. What part of the amino acid molecules distinguishes them from each other?
a) radical b) amino group c) carboxyl group

4. Through what chemical bond Are amino acids connected to each other in a protein molecule with a primary structure?

a) peptide bond

N.H., located in adjacent turns of the spiral

5.About what level structural organization protein we are talking about: “This is a three-dimensional, spatial “packaging” of a polypeptide chain, as a result of which a globule appears”?

6.Simple proteins consist of:

a) only from amino acids c) amino acids and lipids

7. What function of protein are we talking about: “Special proteins are capable of accelerating biochemical reactions occurring in the cell”?

8.What function of protein are we talking about: “Special proteins maintain a constant concentration of substances in the blood and cells, participate in growth, reproduction and other vital processes”?

a) plastic d) protective g) receptor

b) catalytic e) contractile h) energetic

c) transport e) regulatory

Rear No. 2 Answer the questions provided, selecttwo correct answer

9. What is common to all amino acids?

a) radical b) amino group c) carboxyl group

Rear No. 3 Answer the questions provided, selectthree correct answer

10.How can protein structures be disrupted and then restored?

a) primary structure c) tertiary structure

b) secondary structure d) quaternary structure

Test No. 1 “Structure and functions of proteins” - option 2.

Rear No. 1 Answer the questions provided, selectone right answers

1.What compounds are monomers of protein molecules?

a) fatty acids b) glycerol c) amino acids

d) glucose

2. How many of the known amino acids are involved in protein synthesis?

a) 150 6)5 c) 20

H. What part of amino acid molecules distinguishes them from each other?

from friend?

4. Through what chemical bond does the tertiary structure of a protein arise?

a) peptide

b) hydrogen bond between -CO and - groupsN.H., located in adjacent turns of the spiral

c) bonds between amino acid radicals

5. What level of protein structural organization are we talking about: “Does it arise as a result of the combination of several macromolecules with a tertiary structure into a complex complex?

a) primary structure c) tertiary structure

b) secondary structure d) quaternary structure
6.What function of proteins are we talking about: “Specific proteins protect organisms from the invasion of foreign proteins and organisms and from damage”?

a) plastic d) protective g) receptor

b) catalytic e) contractile h) energetic

c) transport e) regulatory

7. What function of proteins are we talking about: “Special proteins are capable of attaching and transporting various substances.”

a) plastic d) protective g) receptor

b) catalytic e) contractile h) energetic

c) transport e) regulatory

Rear No. 2 Answer the questions provided, selecttwo correct answer

8.What is common to all amino acids?

a) carboxyl group b) radical c) amino group

Rear No. 3 Answer the questions provided, selectthree correct answer

9.What structures of protein molecules can be disrupted during denaturation and then restored again?

a) quaternary structure c) secondary structure

b) tertiary structure d) primary structure
10. Complex proteins consist of:

a) only amino acids c) amino acids and lipids

b) amino acids and carbohydrates d) amino acids and nucleic acids

Tests on the topic “Proteins”

1. Which compounds are monomers of protein molecules:

A. glucose

B. glycerin

B. amino acids

D. fatty acids.

2. How many of the known amino acids are involved in protein synthesis:

A. 20

B. 30

V. 100

G. 200.

3. What part of amino acid molecules distinguishes them from each other:

A. radical

B. carboxyl group

B. fatty acid

D. amine group.

4. Through what chemical bond are amino acids connected to each other in a protein molecule of the primary structure:

A. disulfide

B. peptide

B. hydrogen.

5. In which cell organelles are proteins synthesized:

A. in chloroplasts

B. in mitochondria

B. in ribosomes

In the endoplasmic reticulum.

6. Where are ribosomes located:

A. in chloroplasts

B. in mitochondria

B. in the membrane of the endoplasmic reticulum.

7. What structures of protein molecules can be disrupted during denaturation and then restored again:

A. primary

B. secondary

V. tertiary

G. quaternary.

8. How much energy is released when 1 g of protein is broken down:

A. 17.6 kJ

B. 35.2 kJ.

9. What are the differences between enzymes and other proteins?

A. are catalysts for chemical reactions

B. include vitamins, metals

V. are synthesized on ribosomes.

10. What are the main functions of proteins?

A. transport

B. protective

B. catalytic

G. construction.

Answers: 1. B 2. A 3. A. 4. B 5. C 6. C 7. A 8. A 9. B 10. A, B, C, D.

On the topic: methodological developments, presentations and notes

Tests in the Russian language, final test for grade 5, test "Expressive means", lessons on the works of Voronkova and Chivilikhin

Practice tests to prepare for the Unified State Exam. Can be used as a test Test for practicing knowledge of task B8 Final test for grade 5 Methodological development of lessons based on works...

Unified State Exam English Toefl test Ielts test CAE tests Listening tests Reading tests Vocabulary What you need to know to successfully pass the Unified State Exam

toefl testielts testCAE testsListening testsReading tests Lexicon What you need to know to successfully pass the Unified State Exam Whatever a person studies throughout his life, he will always be...

The tests were compiled by: KSU chemistry teacher “ high school No. 5" Kalinicheva E. A.

Petropavlovsk, Republic of Kazakhstan

Grade 11. Control test. Amines. Amino acids. Squirrels. 1 option

1. Not included in proteins:

A) Hydrogen B) Mercury C) Oxygen D) Nitrogen E) Sulfur

2. Relative molecular weight of glycine:

A) 75 B) 65 C) 88 D) 95 E) 59

3. Glycine forms a peptide bond in reaction with:

A) Sodium hydroxide B) Sulfuric acid C) Alanine

D) Hydrogen chloride E) Copper hydroxide (II)

4. The secondary structure of the protein has a strong shape due to:

A) Hydrogen bonds

B) Ester bonds

C) Peptide bonds

D) Sulfide bridges

E) Salt bridges

5. The xanthoprotein reaction is the interaction of proteins with concentrated:

A) HCl B) H 2 SO 4 C) H 2 S D) HI E) HNO 3

‌‌‌‌NH 2

A) Aldehydes. B) Carboxylic acids. C) Amino acids.

D) Ethers. E) Aminam.

7. Three amino acids, sequentially connecting, form a number of peptide bonds equal to:

A) 2 B) 1 C) 4 D) 3 E) 0

8. An amino acid forms an ester in reaction with:

A) acid B) anhydride C) aldehyde D) alcohol E) base

9. Amino acid can be obtained by hydrolysis:

A) Phenylacetate B) Ethyl formate C) Ethyl benzoate

D) Sodium chloride E) Glycylglycine

10. The sum of all coefficients in the reaction equation, the scheme of which is H 2 N – C H 2 – COOH + NaOH →

A) 1 B) 2 C) 3 D) 4 E) 5

A) (CH 3 ) 2 NO 2 B) CH 3 – CO – NH 2 C) CH 3 – COONH 4

E) C 3 H 7 NH 2 E) C 6 H 5 NO 2

12. Feasible reaction:

A) NH 3 + NaCl → B) C 2 H 5 – NH 2 + HCl → C) C 2 H 5 – NH 2 + CH 3 COH →

E) C 2 H 5 – NH 2 + NaOH → E) CH 3 – NH 2 + H 2 →

13. Industrial method for producing aniline:

A) Wurtz synthesis B) Zelinsky synthesis C) Zinin reaction

D) Kucherov reaction E) Lebedev synthesis

14. A diagram is given

A) 24.6 g B) 22.7 g C) 25.2 g D) 29.5 g E) 20.5 g

A) Medicines B) Dyes C) Polyethylene

Grade 11. Control test. Amines. Amino acids. Squirrels. Option 2

1. The substance belongs to the class of amino acids:

A) NH 2 – CH 2 – CH 2 – NH 2

B) CH 2 NH 2 – COOH

C) C 6 H 5 NO 2

D) (CH 3) 2 – NH

E) CH 3 – (CH 2) 2 – COOH

2. Mass fraction of carbon in a glycine molecule:

A) 24% B) 32% C) 40% D) 56% E) 65%

3. Amino acids do not interact with:

A) Alcohols B) Alkalis C) Cycloalkanes

D) Amino acids E) Acids

4. Bipolar amino acid ion is formed when:

A) interaction with alkalis

B) interaction with alcohols

C) interaction with acids

D) internal neutralization

E) interaction with hydrogen halides

5. Amino acids are amphoteric compounds, because:

B) React with water.

C) Form esters.

6. The composition of proteins must include the following element:

A) silicon B) chlorine C) bromine D) carbon E) iodine

7. The first protein whose structure was completely deciphered:

A) lysine B) casein C) albumin D) insulin E) hemoglobin

8. The closest homolog of glycine is called:

A) Tyrosine B) Threonine C) Cystoine D) Alanine E) Guanine

9. The primary structure of a protein is formed due to bonds:

A) Ionic B) Peptide C) Ester D) Glycosidic E) Hydrogen

10. Effect of the biuret reaction on proteins - staining:

A) red B) blue C) purple D) yellow E) crimson

11. The substance belongs to the class of amines:

A) CH 3 – CO – NH 2 B) CH 3 – COONH 4 C) C 3 H 7 NH 2

D) (CH 3)2 N O 2 E) C 6 H 5 N O 2

12.Colorless oily liquid with a characteristic odor, poorly soluble in water, highly soluble in organic solvents - this is:

A) (CH 3)3 N B) CH 3 NH 2 C) C 2 H 5 NH 2

D) (C 2 H 5) 2 NH E) C 6 H 5 N H 2

13. Discovered the reaction C 6 H 5 NO 2 + 6H →

A) N.N. Zinin B) A.M. Butlerov C) M.V. Lomonosov

D) M. Berthelot E) N.N. Semenov

14. The sum of all coefficients in the reaction equation, the scheme of which is C 6 H 5 NH 2 + Br 2 →

A) 3 B) 5 C) 6 D) 4 E) 8

15. A diagram is given

C 2 H 2 → C 6 H 6 → C 6 H 5 NO 2 → C 6 H 5 N H 2 → Cl

To obtain 18.6 g of aniline you will need nitrobenzene weighing:

A) 20.5 g B) 25.2 g C) 24.6 g D) 22.7 g E) 29.5 g

Grade 11. Control test. Amines. Amino acids. Squirrels. Option 3

1. Functional group of primary amines:

A) > NH B) > N C) - NO 3 D) - N H 2 E) - NO 2

2. Relative molecular weight of ethylamine C 2 H 5 N H 2:

A) 31 B) 45 C) 46 D) 48 E) 54

3. Zinin’s reaction:

A) C 2 H 2 + HON → CH 3 – SON

B) C 6 H 5 NO 2 + 6H → C 6 H 5 NH 2 + 2H 2 O

C) CH 2 = CH 2 + H 2 → CH 3 – CH 3

D) n CH 2 = CH 2 → (- CH 2 – CH 2 -) n

E) Cl – CH 2 – COOH + NH 3 → NH 2 – CH 2 – COOH + HCl

4. Bromine water serves as a reagent for determining:

5. A diagram is given

C 2 H 2 → C 6 H 6 → C 6 H 5 NO 2 → C 6 H 5 NH 2 → Cl

To obtain 18.6 g of aniline you will need nitrobenzene weighing:

A) 20.5 g B) 22.7 g C) 25.2 g D) 29.5 g E) 24.6 g

6. The composition of amino acids necessarily includes the element:

A) Cl B) Fe C ) Na D) R E) S

7. Using only glycine and cysteine ​​you can obtain various dipeptides:

A) 2 B) 5 C) 3 D) 4 E) 1

8. Aminoacetic acid in an aqueous solution can react with:

A) Iron (II) nitrate

B) Benzyl alcohol

C) Ammonia solution of silver oxide

D) Barium chloride

E) Ethyl alcohol

10. The amphotericity of amino acids is confirmed by interaction with:

A) NaOH and HCl B) NaOH and CaCO 3 C) CH 3 COOH and C 2 H 5 OH

E) CH 3 OH and NaOH E) HCl and HBr

11. The following does not apply to chemical polymers:

A) Nylon B) Lavsan C) Polyethylene D) Polystyrene E) Proteins

12. . Twisting of a polypeptide chain due to hydrogen bonds between O H

C - N –

groups in α-helices, these are:

A) primary structure of a protein

C) all of the above protein structures

C) tertiary structure of protein

D) secondary structure of protein

E) quaternary protein structure

13. When proteins are heated in solutions of acids and alkalis, the following occurs:

A) Formation of quaternary structure B) Hydrolysis C) Dissolution E) Color reaction to proteins E) Formation of peptide bonds

14. Number of peptide bonds in a tetrapeptide:

A) 4 B) 3 C) 2 D) 1 E) 5

15. The xanthoprotein reaction is the interaction of proteins with concentrated:

A) HCl B) HNO 3 C) H 2 S D) HI E) H 2 SO 4

Grade 11. Control test. Amines. Amino acids. Squirrels. Option 4

1. Protein monomers:

A) Amino acids B) Hydroxy acids C) Anoxic acids

E) Mineral acids E) Carboxylic acids

2. The secondary structure of a protein molecule resembles:

A) Branching B) Spiral C) Tetrahedron D) Thread E) Globule

3. A peptide bond is a group of atoms:

A) - CO – NH - B) - OH C) - CO –H D) - O – CO - E) - NH 2

4. Protein denaturation leads to destruction:

A) only secondary structure

B) hydrogen bonds

C) peptide bonds

D) secondary and tertiary structures

E) only the primary structure

5. Biuret reaction to proteins - evidence of the presence of molecules in the composition:

A) benzene ring B) peptide bonds C) sulfur

D) hydrogen bonds E) ester bonds

6. Organic matter With general formula R – CH – COOH refer to:

‌‌‌‌NH 2

A) Aldehydes. B) Carboxylic acids. C) Aminam.

D) Ethers. E) Amino acids.

7. Misconception about amino acids:

A) They are part of proteins

C) Amphoteric

D) They have a sweetish taste

E) Solids

8. If you take two amino acid molecules, you get:

A) haxapeptide B) pentapeptide C) tetrapeptide

D) tripeptide E) dipeptide

9. The sum of all coefficients in the reaction equation, the diagram of which

H 2 N – CH 2 – COOH + HCl → A) 1 B) 2 C) 3 D) 4 E) 5

10. Relative molecular weight of glycine:

A) 95 B) 65 C) 88 D) 75 E) 59

11. Only amino acids are capable of forming:

A) acids B) bases C) salts

D) peptides E) esters

12. An amino acid forms an ester in reaction with:

A) alcohol B) anhydride C) aldehyde

D) acid E) base

13. Amine formula:

A) C 6 H 5 N 2 Cl B) C 6 H 5 NH 2 C) C 6 H 5 OH D) C 6 H 4 (N O 2) (CH 3) E) C 6 H 5 N O 2

14. The volume of oxygen (at normal conditions) that will be required for the combustion of 5.6 liters of amine and a hydrogen density of 15.5:

A) 14.4 l B) 12.6 l C) 11.2 l

D) 16.8 l E) 22.4 l

15. Aniline is not used to obtain:

A) Polyethylene B) Dyes C) Medicines

D) Explosives E) Antioxidants

Grade 11. Control test. Amines. Amino acids. Squirrels. Option 5

1. CH 3 – NH 2 is the formula:

2. Mass fraction of carbon in methylamine:

A) 29% B) 33% C) 39% D) 45% E) 61%

3. Methylamine reacts with:

A) H 2 O, NO 2 B) H 2 O, HCl C) H 2 O, NH 3 D) CO2, HCl E) NH 3, NO 2

4. 504 l of air (20% oxygen) (n.s.) is completely consumed for the combustion of methylamine with a mass of:

A) 82 g B) 96 g C) 124 g D) 62 g E) 31 g

5. Historical name 2 - aminopropanoic acid:

A) Glycine B) Lysine C) Alanine D) Arginine E) Cystine

6. Amino acids exhibit acid properties when interacting with:

A) H 2 SO 4 B) KOH C) HCl D) H 2 CO 3 E) H 2 O

7. When 150 g of a 1% solution of aminoacetic acid reacts with potassium hydroxide, a salt is formed with a mass of:

A) 2.26 g B) 3.36 g C) 4.46 g D) 5.46 g E) 6.46 g

8. Protein monomer:

A) Amines B) Glucose C) Aniline D) Amino acids E) Nucleotides

9. The fact that when wool burns, sulfur dioxide SO 2 is formed is evidence of the presence of the element in wool protein...

A) sulfur B) carbon C) silicon D) oxygen E) hydrogen

10. The spatial configuration of the helix of a polypeptide chain is:

A) primary structure of a protein

B) protein secondary structure

C) tertiary structure of protein

E) primary and secondary protein structures

11. Proteins speed up chemical reactions in the body:

A) hemoglobins B) viruses C) enzymes

D) bacteria E) hormones

12. Insulin is a hormone, it is

A) regulates digestion

B) regulates breathing

C) transports oxygen

D) regulates blood sugar

E) regulates nervous system

13. A peptide bond can be formed during the interaction:

A) Ethanol and ethylamine

B) Acetaldehyde and ethanol

C) Glycine and aniline

D) Glycine and alanine

E) Water and glycine

14. The biuret reaction of a protein is the appearance of:

A) yellow color when interacting with nitric acid

B) white color when interacting with hydrochloric acid

C) violet color when reacting with copper (II) sulfate in the presence of alkali

D) black color when interacting with lead acetate

E) blue color when interacting with phosphoric acid

15. Natural polymers do not include:

A) Cellulose B) Capron C) Protein D) Nucleic acid E) Starch

Grade 11. Control test. Amines. Amino acids. Squirrels. Option 6

1. The composition of proteins does not include the element:

A) chlorine B) hydrogen C) nitrogen D) oxygen E) carbon

2. The method of joint stacking of several polypeptide chains is:

A) protein secondary structure

B) primary and secondary structure of protein

C) secondary and tertiary structure of protein

D) quaternary structure of protein

E) tertiary structure of protein

3. When freshly prepared copper (II) hydroxide is added to protein, the following is formed:

A) Blue precipitate B) Red precipitate C) Yellow color

D) Red-violet color

4. Metabolic processes in the body are regulated by proteins:

A) hormones B) enzymes C) viruses D) hemoglobins E) bacteria

5. Three amino acids, sequentially connecting, form a number of peptide bonds equal to:

A) 2 B) 1 C) 4 D) 3 E) 0

6. C 2 H 5 – NH 2 is the formula:

A) Methylamine B) Dimethylamine C) Ethylamine D) Aniline E) Nitrobenzene

7. Mass fraction of carbon in ethylamine:

A) 29% B) 53% C) 39% D) 45% E) 61%

8. For complete combustion of 9 g of ethylamine, if the volume fraction of oxygen in the air is 20%, air volume is consumed:

A) 16.8 l B) 22.4 l C) 84 l D) 112 l E) 44.8 l

9. Bromine water serves as a reagent for determining:

A) hexane B) benzene C) methane D) aniline E) glycerin

10. Aniline is not used to obtain:

A) Antioxidants B) Dyes C) Medicines

D) Explosives E) Polyethylene

11. Organic substances with the general formula R – CH – COOH belong to:

‌‌‌‌NH 2

A) Aldehydes. B) Carboxylic acids. C) Aminam. D) Ethers. E) Amino acids.

12. Two amino acids, connecting in series, form a number of peptide bonds equal to: A) 2 B) 1 C) 4 D) 3 E) 0

13. The sum of all coefficients in the reaction equation, the scheme of which is H 2 N – C H 2 – COOH + NaOH →

A) 1 B) 2 C) 3 D) 4 E) 5

14. Incorrect judgment about amino acids:

A) They are part of proteins

B) Consist only of carbon and hydrogen

C) Amphoteric

D) They have a sweetish taste

E) Solids

15. Amino acids are amphoteric compounds, because:

B) React with water.

C) Form esters.

E) They belong to nitrogen-containing organic compounds.

Grade 11. Control test. Amines. Amino acids. Squirrels. Answers

Option 1 Option 2 Option 3 Option 4

1 – B 1 - B 1 - D 1 - A

2 – A 2 - B 2 - B 2 - B

3 – C 3 - C 3- B 3 - A

4 – A 4 - D 4 - D 4 - D

5 – E 5 - A 5 - E 5 - B

6 – C 6 - D 6 - E 6 - E

7 – A 7 - D 7 - A 7 - B

8 – D 8 - D 8 - E 8 - E

9 – E 9 - B 9 - C 9 - D

10 – D 10 - C 10 - A 10 - D

11 – D 11 - C 11 - E 11 - D

12 – B 12 - E 12 - D 12 - A

13 – C 13 - A 13 - B 13 - B

14 - A 14 - E 14 - B 14 - B

15 - C 15 - C 15 - B 15 - A

Option 5 Option 6

10 – C 10 – E

11 – C 11 – E

12 – D 12 – V

13 – D 13 – D

14 - C 14 - B