General The mark scheme for each question shows: • the marks available for each part based on the question • the total marks available for the question • the typical answer or answers which are expected • extra information to help the examiner make his or her judgement and help to delineate what is acceptable or not worthy based on credit or, within discursive answers, to give an overview based on the area within which a mark or marks may be awarded. The extra information within ...

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Two isotopes of iodine are 125 53 I and 131 53 I. Determine, for these two isotopes, the difference between the constituents of the nuclei. [1 mark] 0 1 . 2 A 131 53 I nuclide undergoes beta (β– ) decay to form a xenon nuclide. State the nucleon number of the xenon nuclide. [1 mark] 0 1 . 3 A 125 53 I nuclide decays by electron capture to form a tellurium nuclide. State two differences between the constituents of the iodine nucleus and the tellurium nucleus it decays into.

AQA A LEVEL BUSINESS PAPER 3 QP 2021 Paper 3 Business 3 *Jun* IB/G/Jun21/E6 7132/3 Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signatu re I declare this is my own work. A-level Time allowed: 2 hours Materials For this paper you must have: • a calculator • the Insert. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer t...

AQA A LEVEL BIOLOGY PAPER 2 2021 Qp COMPLETE AQA A LEVEL BIOLOGY PAPER 2 2021 Qp LATEST

AQA A-LEVEL CHEMISTRY CHM3X Investigative and Practical Skills in AS Chemistry Mark scheme 1. Question : (TCO 2) A statement that reports the financial position (assets, liabilities, and stockhold ers ' equity) of an accounting entity at a point in time is called a(an):

AQA GCSE CHEMISTRY 8462/1H Paper 1 Higher Tier June 2022 FINAL MARK SCHEME GCSE CHEMISTRY 8462/1H Paper 1 Higher Tier Mark scheme Jan 2022 Version: 1.0 Final Mark Scheme *206G8462/1H/MS* MARK SCHEME – GCSE CHEMISTRY – 8462/1H – JUNE 2020 2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates ...

MARK SCHEME − A-LEVEL BIOLOGY − 7402/2 − JUNE 2021 Question Marking Guidance Mark Comments 1. Phosphorylation based on glucose using ATP; 2. Oxidation based on triose phosphate to pyruvate; Accept all mark points withindiagrams. 3. Net gain based on ATP; 4. NAD reduced; 2. Accept removal based on hydrogen from triosephosphate for oxidation. 01.1 4 max 3. Accept any description that indicates a net gain e.g., 4 produced, 2 used. 4. Accept NADH/NADH2/NAD H + H+ produced. ...

Level 3 Technical Level IT: NETWORKING Unit 6 Network security management Thursday 16 May 2019 Morning Time allowed: 2 hours Materials For this paper you must have: • a ruler • a scientific calculator (non-programmable) • stencils or other drawing equipment (eg flowchart stencils). Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer each question in the space provided. Do not write...