Test on the chemical nature of proteins are. Biology test "Structure and functions of proteins" (Grade 9)

The tests were compiled by: chemistry teacher of KSU "Secondary 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 E) 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 (II) hydroxide

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. Xantoprotein reaction is the interaction of proteins with concentrated:

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

‌‌‌‌NH 2

A) aldehydes. B) carboxylic acids. C) amino acids.

D) Ether. E) Amen.

7. Three amino acids, connecting in series, form the number of peptide bonds equal to:

A) 2 B) 1 C) 4 E) 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) Phenyl acetate B) Ethyl formate C) Ethyl benzoate

E) 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 E) 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. Possible reaction:

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

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

E) Kucherov's reaction E) Lebedev's synthesis

14. Given a scheme

A) 24.6 g B) 22.7 g C) 25.2 g E) 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

E) (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% E) 56% E) 65%

3. Amino acids do not interact with:

A) Alcohols B) Alkalis C) Cycloalkanes

D) Amino acids E) Acids

4. A 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:

C) React with water.

C) form esters.

6. The composition of proteins necessarily includes the 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 homologue of glycine is called:

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

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

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

10. The effect of the biuret reaction on proteins - staining:

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

11. The class of amines includes the substance:

A) CH 3 - CO - NH 2 B) CH 3 - COOHNH 4 C) C 3 H 7 NH 2

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

12. A colorless oily liquid with a characteristic odor, poorly soluble in water, highly soluble in organic solvents 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

E) 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 E) 4 E) 8

15. Given a scheme

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, nitrobenzene will be required with a mass:

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

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

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 E) 48 E) 54

3. Zinin's reaction:

A) C 2 H 2 + HOH → CH 3 - SON

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

C) CH 2 \u003d CH 2 + H 2 → CH 3 - CH 3

E) 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. Given a scheme

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, nitrobenzene will be required with a mass:

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

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

A) Cl B) Fe C ) Na E) P E) C

7. Using only glycine and cysteine, you can get various dipeptides:

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

8. Aminoacetic acid in aqueous solution can react with:

A) Iron nitrate (II)

B) benzyl alcohol

C) Ammonia solution of silver oxide

D) barium chloride

E) ethyl alcohol

10. 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. Chemical polymers do not include:

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

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

C-N-

groups in α-helices, these are:

A) the primary structure of a protein

C) all of the above protein structures

C) the tertiary structure of the protein

D) the secondary structure of the protein

E) quaternary protein structure

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

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

14. Number of peptide bonds in a tetrapeptide:

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

15. Xantoprotein 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. 4 option

1. Protein monomers:

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

D) Mineral acids E) Carboxylic acids

2. The secondary structure of a protein molecule resembles:

A) Branching B) Spiral C) Tetrahedron E) 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 the destruction of:

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 - proof of the presence in the composition of molecules:

A) benzene core B) peptide bonds C) sulfur

E) hydrogen bonds E) ester bonds

6. Organic substances with the general formula R - CH - COOH refer to:

‌‌‌‌NH 2

A) aldehydes. B) carboxylic acids. C) Amina.

D) Ether. E) amino acids.

7. Misjudgment about amino acids:

A) They are part of proteins

C) amphoteric

D) have a sweet taste

E) Solids

8. If you take two amino acid molecules, then it forms:

A) gaxapeptide B) pentapeptide C) tetrapeptide

E) tripeptide E) dipeptide

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

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

10. Relative molecular weight of glycine:

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

11. Only amino acids are characterized by the formation of:

A) acids B) bases C) salts

E) 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 n.o.) that is 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

E) 16.8 l E) 22.4 l

15. Aniline is not used to obtain:

A) Polyethylene B) Dyes C) Medicines

E) Explosives E) Antioxidants

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

1. CH 3 - NH 2 is the formula:

2. Mass fraction of carbon in methylamine:

A) 29% B) 33% C) 39% E) 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.o.) is completely consumed for the combustion of methylamine with a mass of:

A) 82 g B) 96 g C) 124 g E) 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 acidic 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 interacts with potassium hydroxide, a salt is formed with a mass:

A) 2.26 g B) 3.36 g C) 4.46 g E) 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 sulfur dioxide SO 2 is formed during the combustion of wool is evidence of the presence of an element in the wool protein ...

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

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

A) the primary structure of a protein

B) the secondary structure of the protein

C) the tertiary structure of the protein

E) primary and secondary protein structures

11. Proteins accelerate 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) transport oxygen

D) regulates blood sugar

E) regulates the nervous system

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

A) ethanol and ethylamine

C) Acetic aldehyde and ethanol

C) glycine and aniline

D) glycine and alanine

E) Water and glycine

14. Protein biuret reaction is the appearance of:

A) yellow color when interacting with nitric acid

C) white color when interacting with hydrochloric acid

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

E) black color when interacting with lead acetate

E) blue color when interacting with phosphoric acid

15. Does not apply to natural polymers:

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

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

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

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

2. The method of co-folding several polypeptide chains is:

A) the secondary structure of the protein

C) primary and secondary protein structure

C) secondary and tertiary protein structure

D) quaternary protein structure

E) the tertiary structure of the protein

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

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

D) Red-violet staining

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

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

5. Three amino acids, connecting in series, form the number of peptide bonds equal to:

A) 2 B) 1 C) 4 E) 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% E) 45% E) 61%

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

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

9. Bromine water serves as a reagent for determining:

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

10. Aniline is not used to obtain:

A) Antioxidants B) Dyes C) Drugs

E) Explosives E) Polyethylene

11. Organic substances with the general formula R - CH - COOH refer to:

‌‌‌‌NH 2

A) aldehydes. B) carboxylic acids. C) Amina. D) Ether. E) amino acids.

12. Two amino acids, connecting in series, form the number of peptide bonds equal to: A) 2 B) 1 C) 4 E) 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 E) 4 E) 5

14. Misjudgment about amino acids:

A) They are part of proteins

B) They are made up of only carbon and hydrogen.

C) amphoteric

D) have a sweet taste

E) Solids

15. Amino acids are amphoteric compounds, because:

C) React with water.

C) form esters.

E) Refer 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

5 option 6 option

10 - C 10 - E

11 - C 11 - E

12 - D 12 - V

13 - D 13 - D

14 - C 14 - B

Tests on the topic "Proteins"

1. Which compounds are monomers of protein molecules:

A. glucose

B. glycerin

B. amino acids

G. fatty acids.

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

A. 20

B. 30

W. 100

G. 200.

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

A. radical

B. carboxyl group

B. fatty acid

G. amine group.

4. Through what chemical bond are amino acids interconnected in a protein molecule of the primary structure:

A. disulfide

B. peptide

B. hydrogen.

5. In which cell organelles proteins are synthesized:

A. in chloroplasts

B. in mitochondria

V. in ribosomes

B in the endoplasmic reticulum.

6. Where are the ribosomes located:

A. in chloroplasts

B. in mitochondria

B. in the membrane of the endoplasmic reticulum.

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

A. primary

B. secondary

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

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Test No. 1 "The 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
3. 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 interconnected in a protein molecule of the primary structure?

a) peptide bond

NHlocated in adjacent curls of the spiral

5. What level of protein structural organization are we talking about: “This is a three-dimensional, spatial “packaging” of the polypeptide chain, which results in a globule”?

6. Simple proteins consist of:

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

7. What is the function of the protein in question: "Special proteins are able to accelerate the biochemical reactions that take place in the cell"?

8. What is the function of the protein in question: “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) energy

c) transport f) regulatory

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

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 answers

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

a) primary structure c) tertiary structure

b) secondary structure d) quaternary structure

Test No. 1 "Structure and functions of proteins" - 2nd option.

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

Z. What part of the amino acid molecules distinguishes their friend

from friend?

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

a) peptide

b) hydrogen bond between -CO and - groupsNHlocated in adjacent curls 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 combining several macromolecules with a tertiary structure into a complex complex?

a) primary structure c) tertiary structure

b) secondary structure d) quaternary structure
6. What is the function of proteins in question: "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) energy

c) transport f) regulatory

7. What is the function of proteins in question: "Special proteins are able to attach and transfer various substances."

a) plastic d) protective g) receptor

b) catalytic e) contractile h) energy

c) transport f) regulatory

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

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 answers

9. What structures of protein molecules can be broken 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

A3 . What factors cause irreversible protein denaturation?

A4 . Specify what is observed when concentrated nitric acid acts on protein solutions:

A5 . Proteins that perform a catalytic function are called:

	Hormones		Enzymes
	vitamins		proteins

A6. The hemoglobin protein performs the following function:

Part B

B1. Correlate:

Type of protein molecule		Property
	Globular proteins		Molecule coiled up
	fibrillar proteins		Not soluble in water
			dissolve in water or form colloidal solutions
			filamentous structure

B2. Proteins:

Part C

C1. Write the reaction equations by which glycine can be obtained from ethanol and inorganic substances.

Option 2

Part A

A1 . What element has the largest mass fraction in proteins?

A2 .Indicate which group of substances hemoglobin belongs to:

A3. Coagulation of a spiral into a ball - "globule" characterizes:

A4 . When burning proteins, the smell is felt:

A5 . The appearance of a yellow color during the interaction of a protein solution with concentrated nitric acid indicates the presence in the protein of amino acid residues containing:

A6 .Proteins that protect against bacteria entering the cell:

Part B

B1. Proteins can be found:

B2 . Which statements about proteins are true?

Part C

C1. Carry out transformations:

H 2 O / Hg 2 + + Ag 2 O / NH 3 (solution) + Cl 2 NH 3 (ex.)

C 2 H 2 → X 1 → X 2 → X 3 → X 4

Option 3

Part A

A1 .The primary structure of a protein is:

A2 .The coils of the protein secondary structure are held together mainly by bonds:

A3. Protein denaturation leads to the destruction of:

	Peptide bonds		Hydrogen bonds
	primary structure		Secondary and tertiary structure

A4 . Specify the general qualitative reaction for proteins:

A6. Antibodies and antitoxins perform the following function of proteins:

Part B

B1. Correlate:

Tissue type or protein function		protein type
	Muscular tissues			Globular proteins
	Integumentary tissues, hair, nails			fibrillar proteins
	Enzymes
	Transport proteins

B2 . During the hydrolysis of proteins, substances can be formed:

	C2H5OH		CH 3 CH(NH 2 )COOH
	CH3COOH		CH 2 (OH)CH(NH 2 )COOH
	NH2CH2COOH		NH 2 -NH 2

Part C

C1. Write the reaction equations for the formation of a dipeptide from:

a) aspartic acid (2-aminobutanedioic acid);

b) from aminoacetic acid and alanine.

Option 4

Part A

A1 .The secondary structure of the protein is due to:

A2 . The combination of four globules into a hemoglobin molecule characterizes:

The primary structure of a protein

Biology grade 10. Subject: Squirrels.

1.. Living is different from non-living:
A) the composition of 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) a radical.

5. The composition of protein molecules includes:

A) only amino acids

B) amino acids and sometimes metal ions

C) amino acids and sometimes lipid molecules

D) amino acids and sometimes carbohydrate molecules

6. The structure of the 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;

C) 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 durable 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 biochemical reactions;

B) transport oxygen

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

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

A) only primary;

B) only secondary;

B) always quaternary;

D) Quaternary, sometimes tertiary.

Why is there only 20 of the 200 amino acids in a protein?

The process of denaturation is...?

* Describe the functions of proteins.