GCSE AQA Biology Cell Structure: Draw one line from each part of

Question

Draw one line from each part of the microscope to the function of the part.

Part of the microscope

A

B

C

Function

To adjust the focus of the microscope

To direct light into the viewer’s eye

To hold a slide in place

To magnify the image of a specimen

To support the microscope

04.2

Why was iodine solution added to the layer of onion cells?

Tick (✓) one box.

To dry the cells

To separate the cells

To stain the cells

04.3

Why was a thin layer of onion cells used?

Tick (✓) one box.

To allow light to pass through the cells

To allow oxygen to pass through the cells

To allow water to pass through the cells

04.4

The student wrote a risk assessment for using a knife.

Draw one line from each part of the risk assessment to the description of the part.

Part of risk assessment

Hazard

Plan to minimise risk

Call a first aider

Cut the onion on a chopping board

The onion is cut into pieces

The knife is sharp

04.5

Line A–B in Figure 4 shows the length of cell Z.

Calculate the real length of cell Z.

Complete the following steps.

Measure the length of line A–B in millimetres (mm).

Length of line A–B = __________ mm

Give your measurement of the length of line A–B in micrometres (µm).

1 mm = 1,000 µm

Length of line A–B = __________ µm

Calculate the real length of cell Z.

Use the equation:

real length of cell Z (in µm) = length of line A–B (in µm) / magnification

Real length of cell Z = __________ µm

Tick (✓) two boxes.

The cells would be coloured.

The cells would have no nuclei.

The cells would look larger.

The cells would look more blurred.

The cells would show more internal structures.

What two improvements could the student make to the drawing in Figure 5?

Tick (✓) two boxes.

Add colour to the cells.

Complete the cell walls.

Draw each cell on a separate piece of paper.

Use a higher magnification.

Draw one line from each part of the microscope to the function of the part - AQA - GCSE Biology - Question 4 - 2010 - Paper 1

Worked Solution & Example Answer:Draw one line from each part of the microscope to the function of the part - AQA - GCSE Biology - Question 4 - 2010 - Paper 1

Part of the microscope A

Part of the microscope B

Part of the microscope C

Why was iodine solution added to the layer of onion cells?

Why was a thin layer of onion cells used?

Risk assessment Hazard

Risk assessment Plan to minimise risk

Risk assessment description

Risk assessment knife condition

Measure the length of line A–B in millimeters (mm)

Convert length of line A–B in micrometers (µm)

Calculate the real length of cell Z

Tick two boxes improvements

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