Study guides, Class notes & Summaries

OCR 2023 Biology B H422/02: Scientific literacy in biology A Level Question Paper & Mark Scheme (Merged) INFORMATION • The total mark for this paper is 100. • The marks for each question are shown in brackets [ ]. • Quality of extended response will be assessed in questions marked with an asterisk (*). ADVICE • Read each question carefully before you start your answer. 1 This question is based on the Advance Notice Article ‘Development of therapeutic antibodies for the...

OCR 2023 Biology B H422/01: Fundamentals of biology A Level Question Paper & Mark Scheme (Merged) Section A You should spend a maximum of 40 minutes on this section. Write your answer for each question in the box provided. 1 The image shows an erythrocyte after being placed in a solution. Which option explains the appearance of the erythrocyte? A The solution was distilled water. B The water potential of the solution is equal to the water potential of the cytoplasm of the erythrocyte...

OCR 2023 Biology AH420/02: Biological diversity A Level Question Paper & Mark Scheme (Merged) Section A You should spend a maximum of 20 minutes on this section. Write your answer to each question in the box provided. 1 Which option correctly describes a tissue? A A group of cells performing similar functions B A group of organs performing a specific function C A group of similar cells performing a specific function D A group of similar cells performing a variety of functions ...

OCR 2023 Biology A H420/01: Biological processes A Level Question Paper & Mark Scheme (Merged) 1 Which description of biological molecules is correct? A DNA and RNA are both polymers of nucleotides. B Hydrolysis of sucrose produces fructose and β-glucose. C Proteins are polymers of amino acids and are broken down in condensation reactions. D Starch is a polymer of the monosaccharide maltose. 2 Which statement about lipids is correct? A Phospholipids are formed by esterificatio...

OCR 2023 Biology A H020/02: Depth in biology AS Level Question Paper & Mark Scheme (Merged) 1 (a) Fig. 1.1 shows two cubes that represent a large and a small multicellular plant. Fig. 1.1 Large multicellular plant Small multicellular plant Length = 2 cm Width = 2 cm Depth = 2 cm Surface area : volume = 6:1 (i) Using the data provided in Fig. 1.1, calculate the surface area : volume of the large multicellular plant. (ii) Explain why a large multicellular plant needs a transport syst...

OCR 2023 Biology A H020/01: Breadth in biology OCR 2023Biology AH020/01: Breadth in biology AS Level Question Paper & Mark Scheme (Merged)AS Level Question Paper & Mark Scheme (Merged) Section A You should spend a maximum of 25 minutes on this section. Write your answer for each question in the box provided. 1 Which statement describes a problem that has resulted from the increased use of antibiotics? A Penicillin can no longer be used to treat infections. B Rates of MRSA infection ha...

OCR 2023 ANCIENT HISTORY H407/23: EMPERORS AND EMPIRE A LEVEL QUESTION PAPER & MARK SCHEME (MERGED) SECTION A: The Julio-Claudian Emperors, 31 BC–AD 68 Answer Question 1 or Question 2 and answer Question 3. Answer either Question 1 or Question 2. 1* ‘The sources fail to provide an adequate assessment of the reigns of the emperors Gaius and Nero.’ How far do you agree with this view? 2* To what extent do you agree that the Senate and senators had only themselves to blame for ...

OCR 2023 ANCIENT HISTORY H407/22: THE ELEVEN CAESARS A LEVEL QUESTION PAPER & MARK SCHEME (MERGED) SECTION A: The Julio-Claudian Emperors, 31 BC–AD 68 Answer Question 1 or Question 2 and answer Question 3. Answer either Question 1 or Question 2. 1* ‘The sources fail to provide an adequate assessment of the reigns of the emperors Gaius and Nero.’ How far do you agree with this view? You must use and analyse the ancient sources you have studied as well as your own knowledge to...

OCR 2023 ANCIENT HISTORY H407/21: REPUBLIC AND EMPIRE A LEVEL QUESTION PAPER & MARK SCHEME (MERGED) SECTION A: The Julio-Claudian Emperors, 31 BC–AD 68 QUESTIONS 1 The sources fail to provide an adequate assessment of the reigns of the emperors Gaius and Nero.’ How far do you agree with this view? 2 To what extent do you agree that the Senate and senators had only themselves to blame for the decline in their status and power under the principate? 3 SECTION B: The Breakdown of t...