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Questão 1
Questão
What is magnification ?
Responda
-
the degree to which the size of the an image is larger than the object itself. Expressed as x10
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the degree to which it is possible to distinguish between two objects that are very close together.
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the degree to which you can see the individual components of the cell
Questão 2
Questão
The light microscope can have a magnification of up to x 1500
Responda
- True
- False
Questão 3
Questão
The maximum resolving power of light is 2000mn
Responda
- True
- False
Questão 4
Questão
Why do sections of tissues need to be cut into thin slices for examination under a microscope
Responda
-
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.
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Light cannot penetrate thick slices of tissue, so no detail would be seen
Questão 5
Questão
what is the definition of staining (in microscopy)
Responda
-
any process that helps to reveal or distinguish different features.
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The use of iodine to make transparent substances easier to see under a light microscope
Questão 6
Questão
Each type of organelle has a specific role in the cell what is this called
Responda
-
specialisation
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differentiation
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division of labour
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ultrastructure
Questão 7
Questão
What are the features found in an animal cell.
Responda
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Ribosome
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Chloroplast
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Rough Endoplasmic Reticulum and Smooth Endoplasmic Reticulum
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Mitochondrion
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Nucleolus, nuclear envelope and nucleus
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Cell Wall
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Cell membrane
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Golgi Apparatus
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Vacuole
-
Lysosome
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