Practice Paper. AS Level Biology B (Advancing Biology) H022/01 Foundations of biology, Exams of Biology

Download Practice Paper. AS Level Biology B (Advancing Biology) H022/01 Foundations of biology and more Exams Biology in PDF only on Docsity! Practice Paper. AS Level Biology B (Advancing Biology) H022/01 Foundations of biology MARK SCHEME Duration: 1 hour 30 minutes MAXIMUM MARK 70 This document consists of 12 pages H022/01 Mark Scheme June 20XX MARKING INSTRUCTIONS PREPARATION FOR MARKING SCORIS 1. Make sure that you have accessed and completed the relevant training packages for on-screen marking: scoris assessor Online Training; OCR Essential Guide to Marking. 2. Make sure that you have read and understood the mark scheme and the question paper for this unit. These are posted on the RM Cambridge Assessment Support Portal http://www.rm.com/support/ca 3. Log-in to scoris and mark the required number of practice responses (“scripts”) and the required number of standardisation responses. __ Underlined words must be present in answer to score a mark ECF Error carried forward AW Alternative wording ORA Or reverse argument 4 H022/01 Mark Scheme June 20XX 11. Subject-specific Marking Instructions INTRODUCTION Your first task as an Examiner is to become thoroughly familiar with the material on which the examination depends. This material includes: • the specification, especially the assessment objectives • the question paper 5 • the mark scheme. You should ensure that you have copies of these materials. You should ensure also that you are familiar with the administrative procedures related to the marking process. These are set out in the OCR booklet Instructions for Examiners. If you are examining for the first time, please read carefully Appendix 5 Introduction to Script Marking: Notes for New Examiners. Please ask for help or guidance whenever you need it. Your first point of contact is your Team Leader. SECTION A Question Answer Marks Guidance 1 B 1 2 A 1 3 B 1 4 C 1 5 D 1 6 A 1 7 C 1 8 C 1 9 C 1 10 C 1 11 B 1 12 B 1 13 D 1 14 B 1 15 C 1 16 B 1 17 B 1 7 Total 10 10 2 Question Guidance 23 (a) idea that not all blood will pass through the heart twice in one circuit idea that some blood will not pass through pulmonary circulation OR idea that some blood will not pass through the systemic circulation ALLOW will pass from RA to LA without going to lungs or ALLOW will pass from LA to RA without going around the body (b) smaller volume of blood required blood supply to different organs can be varied 2 (c) (i) add biuret solution / carry out biuret test  protein present if a, purple/lilac/mauve, colour seen OR use, multistix / protein test strip  protein present if colour seen matches chart  2 (ii) 1.2 2 Correct answer = 2 marks If answer incorrect award 1 mark for: -1.5kPa (correct calculation but wrong data used) OR 4.3 - 3.3 (correct blood values used but tissue fluid values not used or used incorrectly) Total 8 Question Guidance 11 Answer Mark 2 24 (a) idea that phloem and xylem in rings in conifer  xylem and phloem in (discrete) vascular bundles / AW in dicot stem idea of circle of vascular bundles in stem of dicot (b) (i) no centrioles (in plant cells) no 'asters'/ AW form plant cells don't change shape (before division) 1 IGNORE reference to cell plate or lack of cleavage furrow (ii) G2  1 ALLOW idea of G2 prophase transition (c) enzyme(s) complementary active site DNA tumour suppressor 5 Total 9 Question Guidance 25 (a) (i) (glucose volume) 6 (water volume) 14 If answer incorrect ALLOW 1 mark for glucose volume 3 AND water volume 7 (ii) (reagent) - Benedict's (solution) (temperature) - above 70oC 2 ALLOW 'boiling' or any value greater than 70 given with correct units IGNORE temperature figures without units 12 Answer Mark