Pearson Edexcel International GCSE (9–1) Human Biology UNIT: 4HB1 PAPER: 01. Latest 2022. Graded A+

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Answer ALL questions. 1 The table lists four features of blood. It also shows four main components of blood. Put a tick () in a box if the component shows the feature. (4) Feature Components ... Red blood cell Plasma Platelet Phagocyte transports oxygen has a nucleus consists of 90% water involved in blood clotting (Total for Question 1 = 4 marks) http://britishstudentroom.wordpress.com/4 *P66432A0424* 2 The diagram shows a model representing the arrangement of bones in the arm. 1 ............................................................................................. 2 ............................................................................................. 4 ............................................................................................. 3 ............................................................................................. wrist palm A = thumb A B C D E (a) (i) Name the bones labelled 1, 2, 3 and 4 on the diagram. (4) (ii) A hinge joint is a synovial joint. Draw a circle on the diagram to show where a hinge joint is found. (1) (iii) Name two other types of synovial joint found in the skeleton. (2) 1 ............................................................................................................................................................................................................................................................................... 2 ............................................................................................................................................................................................................................................................................... http://britishstudentroom.wordpress.com/*P66432A0524* Turn over 5 (b) Vitamin D is important for the growth and development of healthy bones. Explain how vitamin D helps the growth and development of bones. [Show More]

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