Gcse biology b - Study guides, Class notes & Summaries

OCR Higher GCSE Biology B Twenty First Century Science J257_03: Breadth in Biology (Higher Tier) mark scheme june 2024

GCSE COMBINED SCIENCE: TRILOGY 8464/B/1F Biology Paper 1F Mark scheme June 2023

Actual 2024 OCR GCSE Biology B Twenty First Century Science J257/03: Breadth in Biology(Higher Tier) Merged Question Paper + Mark Scheme

AQA GCSE BIOLOGY 8461/1H Paper 1 Higher Tier Version: 1.0 Final *jun2384611H01* IB/M/Jun23/E25 8461/1H For Examiner’s Use Question Mark 1 2 3 4 5 6 TOTAL Tuesday 16 May 2023 Morning Time allowed: 1 hour 45 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. • Answer all questions i...

OCR Higher GCSE Biology B Twenty First Century Science J257_04: Depth in Biology (Higher Tier) question-paper june 2024

Actual 2024 OCR GCSE Biology B Twenty First Century Science J257/01: Breadth in Biology (Foundation Tier) Merged Question Paper + Mark Scheme

Actual 2024 OCR GCSE Biology B Twenty First Century Science J257/02: Depth in Biology (Foundation Tier) Merged Question Paper + Mark Scheme

Aqa GCSE Biology B3 Question and answers rated A+ 2024 What is Osmosis? - correct answer It is the diffusion of water through a semi (partially) permeable membrane. the movement of water molecules from an area of high concentration to low. What are Isotonic drinks (sports drinks)? - correct answer Isotonic drink are drinks that contains a similar level of sugar, ions and water of that of human body. The sugar replaces the amount of sugar released during exercise, and the water and ions r...

2 © OCR 2023 1 (a) (i) Complete the table to compare cellular aerobic and anaerobic respiration in humans. Tick () the correct boxes in each row. [3] (ii) Which statement about respiration is correct? Tick () one box. Aerobic respiration produces more ATP than anaerobic respiration. Anaerobic respiration produces more ATP than aerobic respiration. Both aerobic and anaerobic respiration produce the same amount of ATP. Neither aerobic or anaerobic respiration produces ATP. [1] (b) H...

2 © OCR 2023 Tissue B is made of unspecialized cells Meristem Tissue A transports water from the plant’s roots 1 A scientist cuts a thin slice from a plant stem, as shown in Fig. 1.1. The slice of stem contains three different tissues. Fig. 1.1 B Plant stem Tissue C (a) Draw lines to connect the description of each tissue with its correct name. One has been done for you. Description Name [1] Capillary Tissue Tissue A Xylem Tissue C transports sugar from the plant’s ...