Test work on the topic of the molecular level. Biology test on the topic "Molecular level" (Grade 9)
Municipal educational institution
Sortavala municipal district Republic of Karelia
Medium comprehensive school № 3
Diagnostic work in biology "Molecular level"
Grade 9
prepared
biology teacher of the highest category
Lappo Valentina Mikhailovna
Sortavala 2010
Molecular level
1 option
1. All living organisms:
a) have adaptations to the environment
b) develop
c) are heterotrophs
d) capable of metabolism
2. The distinctive function of fats from carbohydrates:
a) building
b) energy
c) storage
d) protective
3. Monomers of nucleic acids are:
a) amino acids
b) glucose
c) nucleotides
d) nitrogenous bases
4. DNA is different from RNA:
a) location in the cell
b) belonging to biopolymers
c) the remainder of H 3 RO 4 , which is part of the nucleotide
d) the presence of thymine in the nucleotide
5. Enzyme:
a) biocatalyst
b) participates in the process of synthesis and decay of substances
c) most active at t close to zero
d) has a protein base
6. Viruses are similar to non-living structures in that:
a) able to reproduce
b) unable to grow
c) have heredity and variability
d) do not produce energy
7. The composition of complex proteins - glycoproteins includes:
a) fats
b) nucleic acids
c) carbohydrates
d) inorganic substances
8. Vitamins:
a) are not used in the cage as a building material
b) are used as a reserve of nutrients
c) are biocatalysts
d) do not belong to biocatalysts
B. Determine the correct sequence.
9. Draw the nucleotide sequence of the second DNA strand, indicating the hydrogen bonds:
T-T-G-A-C-C-T-G-A-A.
10. Establish a correspondence between the types of nucleic acids and their characteristics.
Nucleic acids Characteristic
A) RNA 1. biopolymer
B) DNA 2. deoxyribose as part of the monomer
3. H 3 RO 4 in the monomer
4. monomers contain ribose
5. consists of monomers
6. contains uracil
7. Nucleotides contain nitrogenous bases
8. a nucleotide has three components
9. Contains Thymine
10. located in the cytoplasm and ribosomes
11. located in the nucleus, mitochondria, plastids
12. contains adenine
Diagnostic work in biology
Molecular level
Option 2
A. Select all correct answers.
1. All living organisms:
a) capable of metabolism
b) have the same structure
c) they are an open system
d) develop
2. Monomer versus polymer:
a) has a more complex structure
b) has a complex structure
c) consists of repeating links
d) is a link in the polymer chain
3. The same functions of fats and proteins:
a) protective
b) construction
c) storage
d) energy
4. Protein denaturation is irreversible in violation of the structure:
a) primary
b) secondary
c) tertiary
d) quaternary
5. ATP is different from RNA nucleotides:
a) the presence of ribose
b) the absence of uracil
c) the presence of three residues H 3 ro 4
d) the presence of adenine
6. Viruses are similar to living organisms in that:
a) unable to grow
b) able to reproduce
c) form a crystalline form of existence
d) have heredity and variability
7. Nitrogenous bases characteristic of DNA:
a) guanine
b) thymine
c) uracil
d) cytosine
8. Carbohydrates include:
a) ribose and lactose
b) glycogen and starch
c) glycerol and lipids
d) cellulose and chitin
B. Make a diagram.
9. Write down the missing DNA nucleotides, indicating the hydrogen bonds:
A-G-*-C-C-T-*-*-G-C
T-*-T-*-*-*-A-C-C-*
10. Establish a correspondence between the structure of a protein molecule and its characteristics.
Structure of a protein molecule
A) primary 1. characteristic of all proteins
B) secondary 2. globule
C) tertiary 3. polypeptide chain
D) Quaternary 4. spiral
5. occurs as a result of the connection
several proteins
6. formed by a strong peptide bond
7. held by numerous hydrogen bonds
connections
8. is destroyed by reversible denaturation
ANSWERS
1 option
a) 1,3,4,5,6,7,8,10,12; b) 1,2,3,5,7,8,9,11,12 |
Option 2
a) 1,3,6, b) 1,4,7 c) 1,2,7 d) 5,7,8 |
Used materials
1. Biology. Introduction to general biology and ecology. Textbook for 9 cells. A.A. Kamensky, E.A. Kriksunov, V.V. Pasechnik M.: Bustard, 2007.
2. Frosin V.N., Sivoglazov V.I. Getting ready for one state exam: General biology. - M .: Bustard, 2004. - 216s;
3. Bolgova I.V. Collection of tasks for general biology for university applicants. M .: "Onyx 21st century" "World and education", 2005;
4. Biology. Educational and training materials for the preparation of students. "Intellect-Center" 2007
"Molecular Level"
Grade 9
1 option
1. DNA monomer2. Where is the hereditary material located in viruses?A) in the cytoplasm; B) in the nucleus;B) in a special shell.
3. DNA does not contain nucleotides:
a) ribose b) thymine c) uracil
4. Primary protein structure
5. Functions of i-RNAA) stores genetic information; B) collects protein molecules; C) transfers genetic information from the nucleus to the site of protein synthesis;D) delivers amino acids to the ribosome.
6. Protein monomerA) an amino acid B) nucleotide;B) monosaccharides; D) glycerol and fatty acids.
7. The correspondence A-T, G-C, A-U is called:
a) transcription b) reduplicationii c) complementarity. DNA strands are held together by:
a) peptide bonds b) ionic bonds c) hydrogen bonds
9. Secondary protein structureA) a chain of amino acids; B) globule;B) a spiral D) several globules assembled into a single complex.
10. Functions of DNAA) stores genetic information; B) delivers amino acids to the ribosome;D) collects protein molecules; D) is involved in protein synthesis.
11. RNA is found in:
a) nucleus b) cytoplasm c) ribosomes
12. The process of losing the natural structure of the protein:
a) renaturation b) denaturation
c) homeostasis
13. Biological catalysts are:
a) antigens b) antibodies c) enzymes
14. Enzyme:
a) accelerates several types of reactions at once
b) works in narrow temperature limits
c) can only work at a certain pH value of the medium
15. Functions of carbohydrates in animal cells:
a) storage b) energy
c) transport
16. Fiber and chitin are examples:
a) polysaccharides b) monosaccharides c) disaccharides
17 .What is the name of an organic substance whose molecules contain C, O, H atoms, which perform an energy and building function?A-nucleic acid B-proteinB-carbohydrate G-ATP
18. What carbohydrates are polymers?A-monosaccharides B-disaccharides B-polysaccharides19. The group of monosaccharides includes:A-glucose B-sucrose B-cellulose 20. What is the role ATP molecules in a cage?A-provide the transport function B-transmit hereditary information B-provide vital processes with energy G-accelerate bio chemical reactions
21. Define the terms: DNA, RNA, complementarity, nucleotide, cellulose.22. Task: A section of a DNA molecule has the following structure:AATGCGATCTTAGTTTAGG, it is necessary to complete the complementary chain of i-RNA.
Test in biology
"Molecular Level"
Grade 9
Option 2
1. Lipids differ from other substances:a) hydrophilic parts
b) hydrophobic parts
c) solubility in water
2. Protein monomers are:
a) amino acids b) monosaccharides c) nucleotides
3. Proteins are:
a) polynucleotides b) polypeptides
c) polysaccharides
4. Arrange the protein structures in sequence:
a) globule b) polymer chain
c) spiral
5. Hydrogen bonds are found in:
a) proteins b) nucleic acids
c) lipids
6. Not found in RNA:
a) ribose b) adenine c) glycerol
7. RNA most often consist of:
a) one chain b) two chains
c) individual nucleotides
8. Glycogen performs:
a) transport b) catalytic
c) storage function
c) tertiary and secondary; d) tertiary, secondary and primary.
10. Of these compounds, lipid nature has:a) hemoglobin; b) insulin; c) testosterone; d) penicillin.
11. DNA strands are held together by:
a) peptide bonds b) ionic bonds
c) hydrogen bonds
12. The monomer of fiber, starch, glycogen is1) fructose 2) amino acid 3) glucose 4) ribose13. How many of the known amino acids are involved in protein synthesis?A-20 B-100 V-23
14. What part of the amino acid molecules distinguishes them from each other?A-radical B-carboxyl group C-amino group
15. What compounds are included in ATP?A- adenine, carbohydrate ribose, 3 molecules phosphoric acid B- guanine, fructose sugar, phosphoric acid residue.B-ribose, glycerol and any amino acid
16. A nucleotide is complementary to a guanyl nucleotide:A-thymidyl B-cytidylB-adenyl G-uridyl
17. Which scientist proposed the term "biology":A) C. Darwin;B) A. Levenguk; C) T. Ruz; D) L. K. Treviranus.
18. Glycogen and cellulose are examples of:
a) polysaccharides b) monosaccharides
c) disaccharides
19. monomers of nucleic acids are:A-amino acids B-fatsB-nucleotides G-glucose
20. What class of chemical substances does ribose belong to?A-protein B-carbohydrate C-lipid
21. A task.In what sequence will the nucleotides be located in the i-RNA if the DNA chain has the following composition: GGTATAGCGTTAAGCCTT.
22. Define the terms: polysaccharides, enzymes,renaturation, monomer, chitin.
Choose one correct answer:
From listed elements in living cells most present:
a) magnesium; b) nitrogen; c) phosphorus;G)carbon.
The tertiary structure of transport proteins and enzymes in the process of performing their functions:
a) does not change; b) changes;in)negoes into the secondary structure;d) goes into a quaternary structure.
During protein denaturationnot happening
destroying them:
but)primary structure;b) secondarystructures; c) tertiary structure;
d) quaternary structure.
Polymers include:
but) cellulose, sucrose, starch;b) inulin, glycogen, ribose;in)starch, inulin, cellulose;d) keratin, lecithin, fructose.
Function of mRNA:
a) is part of the ribosome; b) transports amino acids; c) storage of hereditary information; G)code transmissionhereditary information about the primary structure of the protein.
ATP is an important molecule in metabolism because:
but)it contains high-energy phosphate bonds;+
b) its phosphate bonds are very easily formed, but not easily broken;
c) it can be quickly obtained from the environment surrounding the body;
d) it is exceptionally stable.
The protein that is part of feathers, hair, horns, nails:
a) actin;b)keratin;+
c) tubulin;d) myosin.
From the following mineral elementsis not necessary for plants:a) potassium; b) magnesium; c) calcium;G)lead.
Spare nutrient mushroom iis:
a) starch;b)glycogen; c) inulin;d) cellulose.
Substance poorly soluble in water:
but)heparin;b) glucose;c) vitamin C;d) mineral salts.
11. Which substance is hydrophilic?
a) lipid; b) cellulose;in)sucrose; d) chitin.
12 . Organic substances that provide storage of hereditary information are:
a) proteins; b) fats; c) carbohydrates;G)nucleic acids.
13 . Hydrolysis of starch to glucose:
a) pepsin;b)amylase; c) lipase; d) trypsin.
14 . What substance is shown in the picture?
a) DNA, b) RNA,in)ATP, d) protein
15. Proteins that can speed up chemical reactions perform the following functions in the cell:
a) hormonal; b) signal;in)enzymatic; d) information.
16. For a piece of DNAACCGATTGG indicate the complementary chain:
a) AAGGTCAGT;b)TGGCTAACC; c) TTSGTTATCG; d) TGGCATTATS.
17. The hydrolysis of fats to fatty acids and glycerol carries out:
a) pepsin; b) amylase;in)lipase; d) trypsin.
18. Specify a pair of complementary nucleotides in a DNA molecule:
a) A=G;b)A=T; c) A=U; d) A=C.
a) mushroomsb)viruses; c) bacteria; d) plants.
20. Choose a disaccharide:
but)sucrose; b) ribose; c) glucose; d) starch.
Select several about option ov response :
The source of energy for metabolism can be:
but)proteins;+
b)fats; +
c) fat-soluble vitamins;G)carbohydrates; +
e) mineral salts; e) water.
Phosphoric acid is part of the substances:
but)DNA; b) proteins;in)RNA; d) amino acids; e) carbohydrates;e)ATP.
The polysaccharides are:
but)glycogen; b) sucrose;in)cellulose;G)murein; e) maltose; e) fructose.
Lipids in living organisms play a role:
a) enzymatic;b)reserve;in)structural;G)protective; e) receptor; e) motor.
The nucleotide contains:
but)phosphoric acid residue; b) amino acids; c) lipids; d) enzymes;
e)ribose or deoxyribose carbohydrate;e)nitrogenous base.
Select with one answer from four possible but requiring pre-multiple choice:
Compared to the extracellular environment, the concentration of ions in the cytoplasm of a neuron is increased -I) sodium,II) potassium,III) calcium,IV) chlorine,V) magnesium.
but)I,
II;
b)I,
IV;
in)II,
V;
G)II,
III.
DNA in eukaryotic cells is located in -I) cytoplasm,II) core,III) mitochondria,
IV) lysosomes,V) ribosomes:
but)I,
II,
III,
V; b)I,
II,
IV;
in)II,
III; G)II,
V.
Living organisms use as a transport form of carbohydrates:
I) starch,II) glucose,III) glycogen,IV) sucrose,V) maltose.
but)II,
V;
b)I,
IV;
in)II,
IV;
G)II,
V.
4. In living organisms, the transport function is performed by proteins:
I) hemoglobin,II) hemocyanin,III) catalase,IV) globulins,V) elastin.
but)I, II, III, V; b)I, II, IV; in)II, III; G)II, V.
Match the names of proteins (A-E) with their functions in the human body (1-5).
Protein
A. Trypsin
B. myosin
B. Hemoglobin
G. Keratin
D. Antibodies
Function
1. Structural
2. catalytic
3. Protective
4. Motor
5. Transport
Function
1
2
3
4
5
Protein
GG
BUTBUT
DD
BB
ININ
Establish a correspondence between the features of carbohydrate molecules and their types:
Features of molecules
Types of carbohydrates
1. Monomer
BUT- cellulose
2. Polymer
3. Dissolve in water
B- glucose
4. Do not dissolve in water
5. Included in the cell walls of plants
6. Included in cell sap
Features of molecules
1
2
3
4
5
6
Types of carbohydrates
BG
BUTBUT
BD
BUTB
BUTIN
A judgment is given, with each of which one must either agree or reject.
organogenic chemicals are:O, C, H, N. +
DNA is composed of a nitrogenous base, a ribose sugar, and a phosphoric acid residue. -
The monomers of DNA and RNA are nucleotides.+
Amino acid protein monomers.+
Lipids are hydrophilic in relation to water.-
When splitting 1 g of fat, 17.6 kJ of energy is released.-
Magnesium is part of chlorophyll.+
Most enzymes are proteins.+
RNA is a double unbranched linear polymer.-
Sucrose belongs to disaccharides, found only in plants, where it is the main transported substance.+
Grade 9date of__________________
Option I
1. Which of the named chemical compounds is not a biopolymer?
a) Protein; b) glucose; c) deoxyribonucleic acid; d) cellulose.
2. Changeable parts of an amino acid are:
a) an amino group and a carboxyl group; b) a radical;
c) carboxyl group; d) a radical and a carboxyl group.
3. In the process of biochemical reactions, enzymes:
a) they speed up reactions, while they themselves do not change;
b) accelerate reactions and change as a result of the reaction;
c) slow down reactions without changing;
d) slow down reactions by changing.
4. Monomers of DNA and RNA are:
a) nitrogenous bases; b) deoxyribose and ribose;
c) nitrogenous bases and phosphate groups; d) nucleotides.
5. The secondary structure of the protein is maintained:
a) peptide bonds; b) hydrogen bonds;
c) disulfide bonds; d) bonds between acid radicals;
e) all the listed types of communication.
6. Polymers include:
a) starch, protein, cellulose; b) protein, glycogen, fat;
c) cellulose, sucrose, starch; d) ribose, protein, fat.
7. Molecules are built from amino acid residues:
a) carbohydrates; b) proteins; c) lipids; d) fat.
8. Monosaccharides include:
a) lactose, glucose; b) deoxyribose, sucrose;
c) glucose, fructose; d) glycogen, maltose.
9. What is the function of ribosomal RNA?
a) Forms ribosomes;
b) removal and transfer of information from DNA;
c) amino acid transfer to ribosomes;
d) all of the above functions.
10. The connection of two strands of DNA into a helix is carried out by bonds:
a) ionic; b) hydrogen; c) hydrophobic; d) electrostatic.
11. The protein coat in which the virus genome is enclosed is called
a) virion b) capsule c) viroid d) capsid
12. Viruses multiply
a) only in the host cell
b) independently, outside the host cells
c) both options are correct
A task: a fragment of one of the DNA chains has the following structure: AAG-HCT-ACG-TSH. Build i-RNA on it.
Full name ___________________________________Grade 9date of__________________
Test on the topic "Molecular level"
Option II
1. Which of the substances dissolves well in water?
a) fiber; b) protein; c) glucose; d) lipids.
2. Protein molecules differ from each other:
a) the sequence of alternation of amino acids; b) the number of amino acids in the molecule;
c) the form of the tertiary structure; d) all of the above features.
3. In which case is the composition of the DNA nucleotide correctly indicated:
a) ribose, phosphoric acid residue, thymine; b) phosphoric acid, uracil, deoxyribose;
c) phosphoric acid residue, deoxyribose, adenine; d) phosphoric acid, ribose, guanine.
4. Monomers of nucleic acids are:
a) nitrogenous bases; b) ribose or deoxyribose;
c) deoxyribose and phosphate groups; d) nucleotides.
5. Amino acids in a protein molecule are connected by:
a) ionic bond; b) peptide bond; in) hydrogen bond; d) bonds between acid radicals.
6. What is the function of transfer RNA?
a) Transfer of amino acids to ribosomes; b) removal and transfer of information from DNA;
c) forms ribosomes; d) all of the above functions.
7. Enzymes are biocatalysts consisting of:
a) from proteins; b) lipids; c) nucleotides; d) fat.
8. Polysaccharides include:
a) starch, ribose; b) glycogen, glucose;
c) cellulose, starch; d) starch, sucrose.
9. Carbon as an element is included in:
a) proteins and carbohydrates;
b) carbohydrates and lipids;
c) carbohydrates and nucleic acids;
d) all organic compounds cells.
10. The cell contains DNA:
a) in the nucleus and mitochondria:
b) nucleus, cytoplasm and various organelles;
c) nucleus, mitochondria and cytoplasm;
d) nucleus, mitochondria and chloroplasts.
11. Viruses are ...
a) non-cellular form of life
b) the oldest eukaryotes
c) primitive bacteria
12. Viruses are made up of
a) proteins and nucleic acid
b) cellulose and proteins
c) DNA and RNA
d) nuclei and cytoplasm
A task: i-RNA fragment has the following structure: GAU-GAG-UAC-UUC-AAA. Identify tRNA anticodons. Also write down the fragment of the DNA molecule on which this mRNA was synthesized.
Answers:
Option I: 1 – b, 2 – b, 3 – a, 4 – d, 5 – b, 6 – a, 7 – b, 8 – c, 9 – a, 10 – b, 11-d, 12-a.
Solution: according to the rule of complementarity, we determine the mRNA fragment and break it into triplets: UUC-CGA-UHC-AAC.
Option II: 1 – c, 2 – d, 3 – c, 4 – d, 5 – b, 6 – a, 7 – a, 8 – c, 9 – d, 10 – d, 11-a, 12-c.
Solution: we break the i-RNA into triplets GAU-GAG-UAC-UUC-AAA. This fragment contains 5 triplets, so 5 t-RNA will participate in the synthesis. Their anticodons are determined according to the rule of complementarity: CUA-CUC-AUG-AAG-UUU. Also, according to the rule of complementarity, we determine the DNA fragment (by i-RNA !!!): TSTATSTSATGAAGTTT.
Test. Molecular level. 1 option. Grade 9
A1. Which of the chemical elements is contained in the cells in the greatest amount:
1.nitrogen
2.oxygen
3.coal
4.hydrogen
A2.Name chemical element, which is part of ATP, all protein monomers and nucleic acids.
1)N 2)P 3)S 4)Fe
A3.Specify chemical compound which is NOT a carbohydrate.
1) lactose 2) chitin 3) keratin 4) starch
A4. What is the name of the structure of a protein, which is a helix of a chain of amino acids, coiled in space into a ball?
A5. In animal cells, the storage carbohydrate is:
1. starch
2.cellulose
3.glucose
4.glycogen
A6. The main source of energy for newborn mammals is:
1.glucose
2. starch
3.glycogen
4.lactose
A7. What is an RNA monomer?
1) nitrogenous base 2) nucleotide 3) ribose 4) uracil
A8. How many types of nitrogenous bases are included in the RNA molecule?
1)5 2)2 3)3 4)4
A9. Which nitrogenous base of DNA is complementary to cytosine?
1) adenine 2) guanine 3) uracil 4) thymine
A10. Molecules are the universal biological accumulator of energy.
1).proteins 2).lipids 3).DNA 4).ATP
A11. In a DNA molecule, the number of nucleotides with guanine is 5% of total number. How many nucleotides with thymine are in this molecule
1).40% 2).45% 3).90% 4).95%
A12. What is the role of ATP molecules in a cell?
1-provide a transport function 2-transmit hereditary information
3-provide vital processes with energy 4-accelerate biochemical
reactions
IN 1. What are the functions of carbohydrates in the cell?
Catalytic 4) structural
Energy 5) storage
Motor 6) contractile
IN 2. What are the structural components of the nucleotides of the DNA molecule?
Various acids
Lipoproteins
Carbohydrate deoxyribose
Nitric acid
Phosphoric acid
IN 3. Establish a correspondence between structure and function organic matter and its view:
STRUCTURE AND FUNCTIONS OF SUBSTANCE
A. consist of residues of glycerol molecules and fatty acids 1. lipids
B. consist of residues of amino acid molecules 2. Proteins
B. Participate in thermoregulation
D. Protect the body from foreign substances
D. are formed due to peptide bonds.
E. They are the most energy intensive.
C1. Solve the problem.
In a DNA molecule there are 1250 nucleotides with adenine (A), which is 20% of their total number. Determine how many nucleotides with thymine (T), cytosine (C) and guanine (G) are contained separately in a DNA molecule. Explain the answer.
Total: 21 points
Evaluation criteria:
19 -21 points - "5"
13 - 18 points - "4"
9 - 12 points - "3"
1 - 8 points - "2"
Test. Molecular level. Option 2. Grade 9
A1. The share of four chemical elements accounts for 98% of the total contents of the cell. Indicate a chemical element that is NOT related to them.
1) O 2) R 3) C 4) N
A2. Children develop rickets with a lack of:
1.manganese and iron
2.calcium and phosphorus
3.copper and zinc
4.Sulfur and nitrogen
A3. Name the disaccharide.
1) lactose 2) fructose 3) starch 4) glycogen
A4. What is the name of the structure of a protein, which is a helix that a chain of amino acids is folded?
1) primary 2) secondary 3) tertiary 4) quaternary
A5. In plant cells, the storage carbohydrate is:
1. starch
2.cellulose
3.glucose
4.glycogen
A6. The greatest amount of energy is released during the decomposition of 1 gram:
1.fat
2.squirrel
3.glucose
4.carbohydrates
A7. What is a DNA monomer?
1) nitrogenous base 2) nucleotide 3) deoxyribose 4) uracil
A8. How many polynucleotide strands are included in one DNA molecule?
1)1 2)2 3)3 4)4
A9. Name a chemical compound that is present in RNA but not in DNA.
1) thymine 2) deoxmyribose 3) ribose 4) guanine
A10. Molecules are the energy source of the cell.
1).proteins 2).lipids 3).DNA 4).ATP
A11. In a DNA molecule, the number of nucleotides with cytosine is 5% of the total. How many nucleotides with thymine are in this molecule
1).40% 2).45% 3).90% 4).95%
A12. What compounds make up ATP?
1-nitrogenous base adenine, carbohydrate ribose, 3 molecules of phosphoric acid
2-nitrogen base guanine, fructose sugar, phosphoric acid residue.
3-ribose, glycerol and any amino acid
Part B (choose three correct answers from the six offered)
IN 1. Lipids perform the following functions:
Enzymatic 4) transport
Energy 5) storage
Hormonal 6) transmission of hereditary information
IN 2. What are the structural components that make up the nucleotides of an RNA molecule?
Nitrogenous bases: A, U, G, C.
Various acids
Nitrogenous bases: A, T, G, C.
Carbohydrate ribose
Nitric acid
Phosphoric acid
IN 3. Establish a correspondence between the features and the molecules for which they are characteristic.
FEATURES OF THE MOLECULE
A) dissolve well in water 1) monosaccharides
B) have a sweet taste 2) polysaccharides
C) no sweet taste
D) glucose, ribose, fructose
D) insoluble in water
E) starch, glycogen, chitin.
C1. There are 1100 nucleotides with cytosine (C) in the DNA molecule, which is 20% of their total number. Determine how many nucleotides with thymine (T), guanine (G), adenine (A) are contained separately in a DNA molecule, explain the result.
Part A - 1 point ( maximum amount 12 points)
Part B - 2 points (maximum 6 points)
Part C - 3 points (maximum 3 points)
Total: 21 points
Evaluation criteria:
19 - 21 points - "5"
13 - 18 points - "4"
9 - 12 points - "3"
1 - 8 points - "2"
