AQA AS BIOLOGY 7401/2 PAPER 2 VERSION 1.0 FINAL QUESTION PAPERS & MERGED MARKING SCHEME | JUNE 2023

Which statement about the function of ribosomes is correct? Tick () one box. [1 mark] Site of transcription, catalyse the joining of amino acids by hydrolysis reactions Site of transcription, catalyse the joining of nucleotides by condensation reactions Site of translation, catalyse the joining of amino acids by condensation reactions Site of translation, catalyse the joining of nucleotides by hydrolysis reactions 0 1 . 2 Name two biological molecules that can be coded for by a gene. Do not include a polypeptide or protein in your answer. [1 mark] 1 23 *03* Turn over ► IB/M/Jun23/7401/2 Do not write outside the 0 1 . 3 Scientists investigated the structure of the endoplasmic reticulum. box Table 1 shows some of the scientists’ results. Table 1 Type of endoplasmic reticulum Percentage of endoplasmic reticulum made of phospholipids Rough 46.8 Smooth 52.5 Use the data in Table 1 to suggest how the structure of rough endoplasmic reticulum is different from the structure of smooth endoplasmic reticulum and how this is related to their functions. [3 marks