Scientists investigate cells from the growing tip of a moss plant.

The investigation has two aims:

to record changes in the shape of the cells while they are alive
to see pairs of small structures that are 120 nm apart as two separate structures in prepared cells of the same type

The table shows information about two microscopes.

Microscope	Type of microscope	Resolution in nm	Can be used to view living cells?
P	light	200	yes
Q	electron	0.8	no

An image made using microscope P is enlarged further on a computer screen.

Suggest why the pairs of structures still cannot be seen as separate structures.

Explain how the scientists should use both microscopes to meet the two aims and how this could increase their understanding of the cells.

Scientists investigate cells from the growing tip of a moss plant.

The investigation has two aims:

to record changes in the shape of the cells while they are alive
to see pairs of small structures that are 120 nm apart as two separate structures in prepared cells of the same type

The table shows information about two microscopes.

Microscope	Type of microscope	Resolution in nm	Can be used to view living cells?
P	light	200	yes
Q	electron	0.8	no

An image made using microscope P is enlarged further on a computer screen.

Suggest why the pairs of structures still cannot be seen as separate structures.

Explain how the scientists should use both microscopes to meet the two aims and how this could increase their understanding of the cells.

1.1 Cell structure

1.1 Cell structure Questions