Hope this all helps: Link your decision to the error bars and the distance from the line of best fit. Analysis - A - revealing patterns in data Another easy section to get full marks in, if you take your time and concentrate.
Few, if any, errors in grammar, punctuation and spelling. If it helps, you can add diagrams or photographs of the alternative equipment. Highlight your outliers and repeat them. Would you need to test more individuals from the same species? This needs to be really detailed for you to gain good marks for this section.
This has to be done in detail to get the top marks. Evaluation - Eb - evaluation of primary data Identify any outliers you had in your results. These can be found all over the internet, but a good one can be found here. Choose people that have done the same experiment as you.
Review - Ra - collection and use of secondary data You need to collect secondary data that is relevant to your investigation. Strategy, evaluation and review are all split into two aspects. Think about all the errors that could have occurred and link this back to the limitations of your method and apparatus.
Do you have any personal history of illness eg diabetes, heart disease, etc? Do you have any family history of genetic illness eg diabetes, heart disease, etc? Talk about whether the data you have supports or refutes your hypothesis.
Take their hypothesis and results and find, in detail, similarities and differences between your work. Look at their scatter and error bars, as well as where their graph crosses the x axis.
Review - Rb - reviewing confidence in the hypothesis Say whether or not you agree with your original hypothesis.
If you have put multiple sets of data onto one graph to show comparisons, you need to make sure that each data set is easily identified and there is a key to show which data is which.
I did a big range, then narrowed it down Depending on your results, this will either be a straight line with a ruler or a smooth curve. You can also use the section to discuss alternative methods that are available that can provide the same results with more accuracy.
You need to draw a scatter graph of your average results, including a line of best fit. Evaluation - Ea - evaluation of apparatus and procedures For this section, you need to describe limitations caused by your techniques and equipment.
Last edited by KomradeKorbyn; at How often do you drink alcohol? Will your results always turn out like this because of the theory behind the process?
Any other valid question about medical history Question on whether a person should be worried about their weight, what the consequences of this are, how they should improve their weight: To gain 8 marks, your risk assessment needs to be a separate appendix, which can be completed using a proforma.
Your hypothesis needs to be one sentence that is easily testable. Explain how much your hypothesis can be explained by the science behind it. What might have happened for this to be the result?
Look at each point individually and say if it is accurate and reliable.
Collecting Data - C - range and quality of primary data This is easy to get good marks in. This is really simple. Have you had any recent surgery? Link this to your preliminary experiments that you did.
You also need to refer to your error bars. Small error bars mean increased reliability as all your repeats are close together. You must explain why you chose the range.coursework.
Controlled assessment provides candidates with the marking criteria, and moderated by OCR. THE wEIGHTING OF CONTROLLED ASSESSMENT The Twenty First Century Additional Science A, Biology A, Chemistry A.
Coursework - Full Investigation Your full investigation is worth 25% of your OCR 21st Century Science Additional Science mark. That is a big chunk of marks that you can obtain really easily if you pout the work in!
GCSE - Twenty First Century Science Suite - Biology B () - J (from ) This qualification provides the opportunity to further develop understanding of scientific explanations, how science works, and aspects of biology relevant to careers in science.
Jun 20, · OCR 21st Century Biology B7 GCSE Unofficial Mark Scheme The part of answers in brackets refers to extra detail that may not be necessary The square brackets  denote comments on the question or answer. June OCR Twenty First Century - Additional Science Past Papers (J) Biology/ Additional Science (A/01) – Modules B4, B5 & B6 – Foundation Download Paper – Download Mark Scheme.
Apr 25, · Best Answer: i do OCR and i had that piece to do last year- got 11/24 so i am redoing, i rushed it anyways. i don't have a mark scheme but i do know some things you need: You need to use Scientific phrases and words correctly.
You need to show that your research has helped you, meaning just don't hand in any old research that Status: Resolved.Download