1(a)(i) The organelle labelled X controls the activities of the white blood cell. What is the name of organelle X? A A mitochondrion B ribosome C chromosome D nucleus (ii) Use words from the box to complete the sentences. gas haemoglobin hormone liquid platelet solid Red blood cells contain the substance ____________. Blood plasma is a ____________. (iii) Describe two ways that white blood cells protect the body from disease.

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1(a)(i) The organelle labelled X controls the activities of the white blood cell - Edexcel - GCSE Biology: Combined Science - Question 1 - 2021 - Paper 1

Question 1

1(a)(i) The organelle labelled X controls the activities of the white blood cell. What is the name of organelle X? A A mitochondrion B ribosome C chromosome D nucleu... show full transcript

Worked Solution & Example Answer:1(a)(i) The organelle labelled X controls the activities of the white blood cell - Edexcel - GCSE Biology: Combined Science - Question 1 - 2021 - Paper 1

Step 1

What is the name of organelle X?

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Answer

The correct answer is D nucleus. The nucleus controls the activities of the cell, including the white blood cell.

Step 2

Complete the sentences.

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Answer

Red blood cells contain the substance haemoglobin. Blood plasma is a liquid.

Step 3

Describe two ways that white blood cells protect the body from disease.

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White blood cells protect the body from disease in several ways:

Phagocytosis: White blood cells can engulf and digest pathogens, effectively removing them from the bloodstream and preventing infections.
Antibody Production: White blood cells, especially B lymphocytes, produce antibodies that immobilize and neutralize pathogens, aiding in their elimination and boosting immune response.

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