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Knihovna

Microscope Lab: Viewing Cells

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Poslední aktualizace over 3 years ago
22 Dotazy

In 1665, an English scientists named Robert Hooke made a simple microscope and looked at a piece of cork, the dead cells of oak bark. Hooke observed small, box shaped structures such as those shown below. He called them cellulae (Latin for small rooms) because the box like cells of cork reminded him of the cells in which monks live at the monastery.

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During the late 1600s, Dutch scientist Anton van Leeuwenhoek, inspired by a book written by Robert Hooke, designed his own microscope. To his surprise he saw living organisms in pond water. Watch at least 20 seconds of this live microscope video of pond water then answer the questions. (Ignore the annoying music)

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Otázka 1
1.

What did Robert Hooke call the small things he saw in the cork?

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Otázka 2
2.

Is cork living, dead, or non living?

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Otázka 3
3.

Describe the general shape of the cells.

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Otázka 4
4.

Describe the general shape of the onion cells.

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Otázka 5
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Looking at the magnification of 100x, what parts of the cell can you see?

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Otázka 6
6.

Is this a prokaryote or eukaryote?

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Otázka 9
9.

Label the nucleus and cell wall in the picture.

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Otázka 10
10.

Is the cheek cell prokaryote or eukaryote?

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Otázka 11
11.

Is the cheek cell a plant or animal cell?

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Otázka 12
12.

Identify one cell structure visible in the 100x picture.

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Otázka 15
15.

The Cheek Cells. Label the nucleus and the cell membrane in the picture.

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Otázka 16
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Is this a prokaryote or eukaryote?

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Otázka 17
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Is this a plant or animal cell?

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Otázka 18
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What cell structures are visible in the 400x picture of Elodea?

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Otázka 19
19.

Describe the basic shape of these cells.

Otázka 20
20.

Elodea Leaf. Label the Chloroplast, Cell Wall, and any other VISIBLE cell structures.

Otázka 21
21.

Watch about 20 seconds of the video above. Are thethings you see in the pond water living or non living?

Otázka 22
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Explain your answer for question 21.

Otázka 7
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What organelle will indicate whether it is a pro or eukaryote?

Otázka 8
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Why do onion cells not have chloroplasts?

Otázka 13
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Why do you think these cells have to be stained blue?

Otázka 14
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What is the benefit of the flat shape of these cells?