2024 aqa as biology paper 2 2022 / 2023 AQA AS BIOLOGY 2 Paper 2 Question Paper & Mark scheme 2024 update

2024 aqa as biology paper 2 2022 / 2023 AQA AS BIOLOGY 2 Paper 2 Question Paper & Mark scheme 2024 update what is pre mrna - ANSWER-pre mrna only produced in eukaryote cell. splicing only occurs in eukaryote cell. what is pna - ANSWER-pna is complementary to dna,reducing rna polymerase activity. What is tRNA? - ANSWER-provides amino acid joins to trna. What is a isomer? - ANSWER-isomer what term is used to describe the different structures of a glucose and b glucose? [1mark] - ANSWER-hydroxyl group describe how the result from the colorimeter can identify the fruit juice containing the higher sugar content [1 mark] - ANSWER-juice b suggest how pna affected the transcription of the section of dna [2 marks] - ANSWER-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] - ANSWER-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] - ANSWER-the formation of a peptide bond between amino acids requires energy in the form of atp needed for translation is provided by the mitochondria within the cell describe the structure and function of the nucleus[4marks] - ANSWER-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] - ANSWER-1 sample volume 2 temperature What is a gene? - ANSWER-segment of DNA that codes for a protein. a sequence of dna nucleotide bases that codes for a polypeptide. ZO-1 question? - ANSWER-zo1 is located in cell surface membrane. 2 antibody is complementary to zo1 . 3 so binds to the zo1.