Section 2 biology aqa Study guides, Revision notes & Summaries

AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/1F Foundation Tier Biology Paper 1F Question Paper + Mark scheme [MERGED] June 2022 *junb1f01* IB/M/Jun22/E11 8464/B/1F For Examiner’s Use Question Mark 1 2 3 4 5 6 TOTAL Time allowed: 1 hour 15 minutes Materials For this paper you must have: • a ruler • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page...

1. AQA GCSE Biology Cell Biology Eukaryotic cells Plant and animal cells What characterises eukaryotic cells? (3) Cell membrane, cytoplasm and genetic material enclosed in a nucleus Prokaryotic cells Bacterial cells What characterises prokaryotic cells? (4) 1. much smaller in comparison 2. have a cytoplasm and cell membrane surrounded by cell wall 3. genetic material is a single DNA loop not enclosed in a nucleus 4. may be 1 or more small rings of DNA called plasmids Millimetr...

AQA Biology GCSE [B13] Verified Solutions What is a chromosome? A large molecule of DNA Gene A small section of DNA on a chromosome that codes for a particular sequence of amino acids that make a specific protein How many chromosomes do humans have? 46 (23 pairs) in most cells. Gametes have half of this number (23). Sexual reproduction The joining (fusion) of male and female gametes formed by meiosis producing genetic variation in the offspring as genetic material is mixed What i...

AQA A-level BIOLOGY 7402/3 Paper 3 Version: 1.0 Final *jun* IB/M/Jun23/E12 7402/3 For Examiner’s Use Question Mark 1 2 3 4 5 6 7 TOTAL Wednesday 21 June 2023 Morning Time allowed: 2 hours 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 in Section A. • Answer one question from S...

AS BIOLOGY AqA Paper 2 (7401/2) June 2022 OFFICIAL Question Paper 1. What is a gene? 2. Describe how the production of messenger RNA (mRNA) in a eukaryote cell is different from the production of mRNA in a prokaryote cell. [2 marks] 3. Scientists produced a short, single-stranded, artificial nucleic acid, called PNA. The PNA binds to a small section of DNA. The scientists introduced PNA into cells and discovered that these cells produced less mRNA than cells that did not contain PNA. ...

AQA A-level BIOLOGY 7402/3 Paper 3 Version: 1.0 Final *jun* IB/M/Jun23/E12 7402/3 For Examiner’s Use Question Mark 1 2 3 4 5 6 7 TOTAL Wednesday 21 June 2023 Morning Time allowed: 2 hours 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 in Section A. • Answer one question from S...

Contents Section Page A Introduction 4 Information about practical work for teachers B Practical work in reformed A-level Biology, Chemistry and Physics 7 C Practical skills assessment in question papers 12 D Guidelines for supporting students in practical work 18 E Use of lab books 20 F Cross-board statement on CPAC 22 G Evidence for the endorsement 31 H Questions from teachers following the first year of the practical endorsement 33 I Cross-board apparatus and techniques and AQ...

AQA A-Level Biology. 3.2 – Cells questions and answers 100% guaranteed success. Structure of Nucleus. - correct answer. 1. Nuclear envelope: double membrane surrounding nucleus, outer membrane continuous with the (R)ER of the cell. 2. Nuclear pores: allow the passage of larger molecules, such as mRNA, out of the nucleus. 3. Nucleoplasm: granular, jelly-like material making up the bulk of the nucleus. 4. Chromosomes: protein-bound, linear DNA. 5. Nucleolus: small...

A-Level Biology AQA Paper 3 Predicted Paper 2023 Name …………………………………………………………………… Date ………………… 2 hours allowed. You may use a scientific calculator and a ruler with millimetre measurements. Answer all questions in section A. Answer one question from section B. Grade boundaries These are VERY rough guesses! Getting a B on this paper does not guarantee you the same mark in the exam. • A* 65% • A 55% • B...

A-Level Biology AQA Paper 2 Predicted Paper 2023 Name …………………………………………………………………… Date ………………… 2 hours allowed. You may use a scientific calculator and a ruler with millimetre measurements. Grade boundaries These are VERY rough guesses! Getting a B on this paper does not guarantee you the same mark in the exam. • A* 65% • A 55% • B 45% • C 40% • D 35% • E 30% ...