Unit 1 Cells, exchange and transport (F211) - cells

Question

What is magnification ?

Answer

the degree to which the size of the an image is larger than the object itself. Expressed as x10
the degree to which it is possible to distinguish between two objects that are very close together.
the degree to which you can see the individual components of the cell

Question

The light microscope can have a magnification of up to x 1500

Answer

Question

The maximum resolving power of light is 2000mn

Answer

Question

Why do sections of tissues need to be cut into thin slices for examination under a microscope

Answer

If the sample is too thick there would be too many cells overlapping each other so you would not be able to focus on the cells.
Light cannot penetrate thick slices of tissue, so no detail would be seen

Question

what is the definition of staining (in microscopy)

Answer

any process that helps to reveal or distinguish different features.
The use of iodine to make transparent substances easier to see under a light microscope

Question

Each type of organelle has a specific role in the cell what is this called

Answer

Question

What are the features found in an animal cell.

Answer

Resource summary

	Created by Jenni over 9 years ago