Page 12 - 新思维科学活动用书7 样章

1.3 Specialised cells

1.3 Specialised cells

Exercise 1.3 How cells are specialised for their functions

This exercise will help you to explain how cells are specialised for their functions. For Question 3a
you will need to think hard about designing a table that is easy for everyone to understand. It is a

good idea to try out several ideas on rough paper first.

Focus

1 The diagram shows a red blood cell.

Complete the sentences.

Choose words from the list.

You can use each word once, more than once or not at all.

capillaries cytoplasm food haemoglobin oxygen

a Red blood cells contain a substance called .

This helps them to carry around the body.

b Red blood cells are smaller than most cells. This helps them to squeeze through the small

blood vessels called

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