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This question is about cell structures - AQA - GCSE Biology Combined Science - Question 1 - 2018 - Paper 1

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This question is about cell structures. Draw one line from each cell structure to the type of cell where the structure is found. Cell Structure - Nucleus - Perman... show full transcript

Worked Solution & Example Answer:This question is about cell structures - AQA - GCSE Biology Combined Science - Question 1 - 2018 - Paper 1

Step 1

Draw one line from each cell structure to the type of cell where the structure is found.

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Answer

  1. Nucleus → Eukaryotic cells
  2. Permanent vacuole → Plant cells only
  3. Plasmid → Prokaryotic cells

Step 2

What are the names of structures A, B and C?

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Answer

Structure A: Vacuole Structure B: Ribosome Structure C: Cell wall

Step 3

Describe how the student should adjust the microscope to see the cells on Slide A more clearly.

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Answer

The student should turn the fine focusing knob until the cells are in focus.

Step 4

Describe how the student should adjust the microscope to see the cells on Slide B more clearly.

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Answer

The student should rotate the nosepiece to a higher power lens to increase the magnification.

Step 5

Calculate the magnification of the drawing.

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Answer

To calculate the magnification:

Magnification=Size of imageReal size of object\text{Magnification} = \frac{\text{Size of image}}{\text{Real size of object}}

Using the values: Magnification=112 mm280 µm=1120.28=400\text{Magnification} = \frac{112 \text{ mm}}{280 \text{ µm}} = \frac{112}{0.28} = 400

Thus, the magnification of the drawing is 400.

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