EDEXCEL A LEVEL BIOLOGY QUESTION PAPER 2 (SALTERS NUFFIELD) 16th JUNE 2023.

EDEXCEL A LEVEL BIOLOGY QUESTION PAPER 2 (SALTERS NUFFIELD) 16th JUNE 2023. • Answer all questions. • Use black ink or ball-point pen. • The total mark for this paper is 100. Advice • Try to answer every question. Instructions Fill in the boxes at the top of this page with your name, centre number and candidate number. Show your working in any calculation questions and include units in your answer where appropriate. Answer the questions in the spaces provided – there may be more space than you need. Information The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question. You may use a scientific calculator. In questions marked with an asterisk (*), marks will be awarded for your ability to structure your answer logically showing how the points that you make are related or follow on from each other where appropriate. • Read each question carefully before you start to answer it. • Check your answers if you have time at the end. P71907A ©2023 Pearson Education Ltd. N:1/1/1/1/ Turn over surname names Number Number Morning (Time: 2 hours) Paper Advanced Marks • • • • • • 2 ■■■■ Answer ALL questions. Write your answers in the spaces provided. Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then mark your new answer with a cross . 1 During growth, cells divide by mitosis. Many organisms also carry out meiosis to enable sexual reproduction. (a) (i) In which stage of cell division do spindle fibres attach to the centromeres? A anaphase B interphase C metaphase D telophase (ii) In which stage of the cell division does the nuclear membrane start to break down? A interphase B metaphase C prophase D telophase (iii) In which stage of cell division are chromatids first visible when using a light microscope? A interphase B metaphase C prophase D telophase