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Cell and Organelle Quiz

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Questions and Answers

Which of the following is true about the resolution of the human eye?

The resolution of the human eye is 1000x worse than a light microscope.

The resolution of the human eye is 0.2μm.

The resolution of the human eye is 1000x better than a light microscope.

The resolution of the human eye is 0.2mm. (correct)

What is the main purpose of tissue fixation in microscopy?

To terminate ongoing biochemical reactions

To preserve the tissue (correct)

To remove paraffin from the specimen

To increase the rigidity of microstructures

Which type of fixation involves immersing the tissue in a fluid?

Dehydration fixation

Immersion fixation (correct)

Embedding fixation

Perfusion fixation

What is the purpose of embedding the tissue in paraffin?

To increase the rigidity of the specimen Signup and view all the answers

Which type of stain is commonly used to stain RNA Nissl material?

Toluidine blue Signup and view all the answers

Which of the following is true about the resolution of light microscopy compared to the human eye?

The resolution of light microscopy is 1000 times better than the human eye. Signup and view all the answers

Which type of fixation involves injecting fixative into the heart of a whole animal?

Perfusion fixation Signup and view all the answers

Which type of stain is commonly used to stain purple?

Hematoxylin Signup and view all the answers

What is the main purpose of rehydration in tissue preparation for microscopy?

To remove paraffin from the tissue Signup and view all the answers

Which of the following is true about most dyes used for staining in microscopy?

Most dyes are acids and bases that form ionic linkages with tissues. Signup and view all the answers