NY Regents History of Cells & Microscopes

The cell theory states:

1. 1. All living things are made up of ​ (a)   .

2. 2. Cells are the basic units of​ (b)   .

3. 3. Cells come from ​ (c)   cells.

• cells
• structure and function
• other

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NGSS.MS-LS1-1

Match the following

• Leeuwenhoek

• Discovered the nucleus

• Robert Brown

• Discovered 1-celled organisms with a simple 1 lens microscope

• Robert Hooke

• Discovered cell wall and named it "Cells"

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NGSS.MS-LS1-1

Match the following

• Louis Pasteur

• Concluded that cells arise from preexisting cells

• Rudolph Virchow

• Proved that tiny microscopic organisms caused disease

• Schwann

• Discovered plants are made of cells

  "Weeden"

• Schleiden

• Discovered Animals are made of cells

  "Swannin the pond"

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NGSS.MS-LS1-1

Which letter is the coarse adjustment that is used to focus when in low power

• A

• B

• C

• D

What letter is the diaphragm that regulates the amount of light

• A

• AB

• AC

• E

Which letter represents the fine focus that is used when in high power?

• A

• B

• C

• D

When you lay down a slide cover on top of a wet mount, why do you lay it down at a 45 degree angle

• Let air out to prevent air bubbles

• To trap the specimen

• Trying not to spill the water and lose the specimen

This letter e is being viewed under a micrscope, there are mirrors in the microscope because of the 45 degree angle of the body tube of the microscope.

When viewed without the microscope the letter e is?

• upright

• upside down

This microscope can enlarge a specimen up to 200,000 x

It can view organelles as small as mitochondria and chromosomes.

• Electron microscope

• Ultracentrifuge

• Dissecting microscope

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NGSS.MS-LS1-2

This device is a tool that separates cell part according to their densities by spinning the cellular materials very fast.

• ultracentrifuge

• electron microscope

• dissecting microscope

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NGSS.MS-LS1-2