Cell Ultra-structure Flashcards

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1
Q

What do electron microscopes use instead of light?

A

An electron beam

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2
Q

What are the two main types of electron microscopes?

A

Transmission electron microscope (TEM)

Scanning electron microscope (SEM)

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3
Q

What does a Transmission electron microscope (TEM) do? What does it show?

A

It sends a beam of electrons through a thin section of the specimen. This shows the internal structure of the specimen in great detail.

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4
Q

What does a Scanning electron microscope (SEM) use?

A

It uses a beam of electrons to provide a surface view of the specimen

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5
Q

What view does a Scanning electron microscope (SEM) show?

A

A surface view of the specimen

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6
Q

What view does a Transmission electron microscope (TEM) show?

A

The internal structure of the specimen in great detail.

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7
Q

Define ultrastructure

A

It is the detail of a structure as seen using an electron microscope

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8
Q

What magnification can electron microscopes give?

A

Magnifications of 250,000 and higher.

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9
Q

What can electron microscopes produce?

A

Very clear images

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10
Q

What are electron microscopes ideal for?

A

They are ideal for observing very small structures.

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