Aqa As Biology Paper 2 2022 34 Correctly Answered Questions Latest Update

what are inorganic ions? {Ans: Salts/Minerals Inorganic = do not contain carbon, Ion = charged (+ve/-ve) e.g. Sodium Ions (Na+), Chloride Ions (Cl-)}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}How are polymers broken down? {Ans: hydrolysis}what is the test for strarch? {Ans: starch hydrolysed. maltose is soluble. so reduces water potential.}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 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}what is the structure of cellulose? {Ans: Beta glucose - glycosidic bond cannot form so every other molecule flips 180 to allow the bond to form - hydrogen bonds between chains to increase strength. many cellulose chains are crosslinked by hydrogen bonds,form microfibrils. microfibrils is crosslinked to make