Figure 3 shows two light receptor cells from the human eye. (i) Which part of the eye contains light receptor cells? A cornea B iris C lens D retina (ii) These cells require energy. The cell organelles labelled X release energy during respiration. Name the organelles labelled X. (iii) The cell organelle labelled Y contains chromosomes. Name the organelle labelled Y. (iv) Cell A responds to dim light and is responsible for night vision. Name cell A.

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Figure 3 shows two light receptor cells from the human eye - Edexcel - GCSE Biology - Question 4 - 2022 - Paper 1

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Figure 3 shows two light receptor cells from the human eye. (i) Which part of the eye contains light receptor cells? A cornea B iris C lens D retina (ii) These... show full transcript

Worked Solution & Example Answer:Figure 3 shows two light receptor cells from the human eye - Edexcel - GCSE Biology - Question 4 - 2022 - Paper 1

Step 1

Which part of the eye contains light receptor cells?

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Answer

The correct answer is D: retina. The retina is the only part of the eye that contains light receptor cells, which are essential for vision.

Step 2

Name the organelles labelled X.

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Answer

The organelles labelled X are mitochondria. Mitochondria are responsible for producing energy through respiration.

Step 3

Name the organelle labelled Y.

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Answer

The organelle labelled Y is the nucleus. The nucleus contains chromosomes and is crucial for genetic information storage.

Step 4

Name cell A.

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Answer

Cell A is referred to as rod cells. Rod cells are responsible for vision in low light conditions and are crucial for night vision.

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Figure 3 shows two light receptor cells from the human eye - Edexcel - GCSE Biology - Question 4 - 2022 - Paper 1

Worked Solution & Example Answer:Figure 3 shows two light receptor cells from the human eye - Edexcel - GCSE Biology - Question 4 - 2022 - Paper 1

Which part of the eye contains light receptor cells?

Name the organelles labelled X.

Name the organelle labelled Y.

Name cell A.

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