AQA AS BIOLOGY PAPER 2 EXAM
QUESTIONS AND ANSWERS GRADED A+
2025/2026
What term is used to describe the different structures of a glucose and b glucose? [1mark] -
ANS hydroxyl group
describe how the result from the colorimeter can identify the fruit juice containing the higher
sugar content [1 mark] - ANS juice b
suggest how pna affected the transcription of the section of dna [2 marks] - ANS tight binding
to mrna due to the strand displacement in a dna target
describe how the production of messenger rna (mrna) in a eukaryote cell is different from the
production of mrna in a prokaryotic cell[2marks] - ANS eukaryotic transpiration takes place of
the nucleus,while prokaryotic transcription takes place in the cytoplasm.
describe the role of atp in the process of translation in protein synthesis[2marks] - ANS the
formation of a peptide bond between amino acids requires energy in the form of atp.the atp
needed for translation is provided by the mitochondria within the cell
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, describe the structure and function of the nucleus[4marks] - ANS a membrane bound
structure that contains the cell's hereditary information and controls the cell's growth and
reproduction.
it is separated from the cytoplasm by a nuclear membrane.
command center of a eukaryotic cell.
the shape is disc shaped
the student controlled variablea in the test using benedicts solution. give two variables the
student controlled.[2marks] - ANS 1 sample volume
2 temperature
What is a gene? - ANS segment of DNA that codes for a protein. a sequence of dna
nucleotide bases that codes for a polypeptide.
ZO-1 question? - ANS zo1 is located in cell surface membrane.
2 antibody is complementary to zo1 .
3 so binds to the zo1.
4 cells identified with dye linked to antibody
DNA replication during interphase. two divisions. separation of homologous chromosomes.
separation of sister chromatids. produces 4 haploid cells. - ANS How many daughter cells are
produced at the end of meiosis?
what is pre mrna - ANS pre mrna only produced in eukaryote cell. splicing only occurs in
eukaryote cell.
what is pna - ANS pna is complementary to dna,reducing rna polymerase activity.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS AND ANSWERS GRADED A+
2025/2026
What term is used to describe the different structures of a glucose and b glucose? [1mark] -
ANS hydroxyl group
describe how the result from the colorimeter can identify the fruit juice containing the higher
sugar content [1 mark] - ANS juice b
suggest how pna affected the transcription of the section of dna [2 marks] - ANS tight binding
to mrna due to the strand displacement in a dna target
describe how the production of messenger rna (mrna) in a eukaryote cell is different from the
production of mrna in a prokaryotic cell[2marks] - ANS eukaryotic transpiration takes place of
the nucleus,while prokaryotic transcription takes place in the cytoplasm.
describe the role of atp in the process of translation in protein synthesis[2marks] - ANS the
formation of a peptide bond between amino acids requires energy in the form of atp.the atp
needed for translation is provided by the mitochondria within the cell
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, describe the structure and function of the nucleus[4marks] - ANS a membrane bound
structure that contains the cell's hereditary information and controls the cell's growth and
reproduction.
it is separated from the cytoplasm by a nuclear membrane.
command center of a eukaryotic cell.
the shape is disc shaped
the student controlled variablea in the test using benedicts solution. give two variables the
student controlled.[2marks] - ANS 1 sample volume
2 temperature
What is a gene? - ANS segment of DNA that codes for a protein. a sequence of dna
nucleotide bases that codes for a polypeptide.
ZO-1 question? - ANS zo1 is located in cell surface membrane.
2 antibody is complementary to zo1 .
3 so binds to the zo1.
4 cells identified with dye linked to antibody
DNA replication during interphase. two divisions. separation of homologous chromosomes.
separation of sister chromatids. produces 4 haploid cells. - ANS How many daughter cells are
produced at the end of meiosis?
what is pre mrna - ANS pre mrna only produced in eukaryote cell. splicing only occurs in
eukaryote cell.
what is pna - ANS pna is complementary to dna,reducing rna polymerase activity.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
