7401 1 as biology paper 1 - Study guides, Revision notes & Summaries

AQA BIOLOGY AS LEVEL JUNE PAPER 1

AQA AS BIOLOGY 7401/1 Paper 1 Question Paper + Mark scheme [MERGED] June 2022

aqa AS BIOLOGY Paper 1 (7401/1) May 2023 Question Paper. 1. Describe the primary structure of all proteins. 2. This question is about the genetic code. Define universal, non-overlapping and degenerate. 3. Describe how the appearance of the area containing DNA in a TEM image of a eukaryotic cell would differ from that shown in Figure 1. 4. Describe one difference between the structure of DNA in a prokaryotic cell and in a eukaryotic cell. 5. Streptococcus bacteria can infect the lungs when air i...

AQA BIOLOGY AS LEVEL JUNE 2022 7401 PAPER 2 Mark Scheme

AS BIOLOGY 7401/1 Paper 1 Mark scheme June 2023

AQA AS BIOLOGY 7401/2 Paper 2 Version: 1.0 Final *JUN* IB/M/Jun23/E9 7401/2 For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 TOTAL Thursday 25 May 2023 Morning Time allowed: 1 hour 30 minutes Materials For this paper you must have: • a ruler with millimetre measurements • a scientific calculator. 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 the question...

0 1 . 1 Figure 1 shows the structure of some biological molecules. Figure 1 Want to earn £756 extra per year? S - The Marketplace for Revision Notes & Study Guides 3 *03* Turn over ► IB/M/Jun22/7401/1 Do not write outside the boxComplete Table 1 by writing the correct letter, A, B, C, D or E, in the box next to each statement. Each letter may be used once, more than once, or not at all. [4 marks] Table 1 Letter Statement is hydrolysed in the ileum and a product of this hydroly...