cells day 1-king

8/2/2019 Cells Day 1-King

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How Big is Big http://cellsalive.com/howbig.htm

http://www.sciencedaily.com/releases/2008/06/080603085914.htm

http://kids.nationalgeographic.com/kids/games/puzzlesquizzes/quizyournoodle-bacteria/
http://cellsalive.com/howbig.htmhttp://www.sciencedaily.com/releases/2008/06/080603085914.htmhttp://www.sciencedaily.com/releases/2008/06/080603085914.htmhttp://kids.nationalgeographic.com/kids/games/puzzlesquizzes/quizyournoodle-bacteria/http://kids.nationalgeographic.com/kids/games/puzzlesquizzes/quizyournoodle-bacteria/http://kids.nationalgeographic.com/kids/games/puzzlesquizzes/quizyournoodle-bacteria/http://kids.nationalgeographic.com/kids/games/puzzlesquizzes/quizyournoodle-bacteria/http://kids.nationalgeographic.com/kids/games/puzzlesquizzes/quizyournoodle-bacteria/http://kids.nationalgeographic.com/kids/games/puzzlesquizzes/quizyournoodle-bacteria/http://www.sciencedaily.com/releases/2008/06/080603085914.htmhttp://www.sciencedaily.com/releases/2008/06/080603085914.htmhttp://cellsalive.com/howbig.htm


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6R

Living Things (Organisms) 3/7/11 21

3 4


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Box 1


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Box 2


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Box 3


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Box 4


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Eye cells of a baby


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Moths eye cells


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6R

Living Things 4-Square 2/24/10

21

3 4

All living things

are made ofcells!

What do theseliving thingshave incommon?

What dothese livingthings havein common?

What do theseliving thingshave incommon?


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Unit 2 of textbookCell Notes

3/12/123/13/12

The Cell Theory


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All living things, like humans, animals, plants and bacteria,are all made of one or more cells.


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Unit 2 of textbook

Cell Notes3/12/12

3/13/12

The Cell Theory


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The Cell is the basic Unit of all living things.


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The Cell is the basic Unit of all living things.

All cells come from existing cells

(All cells come from parent cells)


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A cell is the smallest unit in living things. Some livingthings like a tiny bacteria is made of just a single cell.


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Other organisms like humans or plants can be made oftrillions of cells.


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Because cells are so small, cells were not discovered until

microscopes were invented in the mid-1600s.


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A. EYEPIECE

Contains the OCULAR lens

Lens, or system of lenses closest to your eye.

Helps magnify specimen


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B. NOSEPIECE

Holds the HIGH- and LOW- power

objective LENSES; can be rotated to

change MAGNIFICATION.


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K. ARM

Used to SUPPORT the

microscope when carried

We always hold by base and arm


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J. COARSE ADJUSTMENT KNOB

Moves the stage up and down for FOCUSING


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C. OBJECTIVE LENSES

Magnification ranges from

10 X to 40 X


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D. STAGE CLIPS

HOLD the slide in place

HOLD theslide inplace


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E. STAGE

Supports the SLIDE being viewed


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FINE ADJUSTMENT KNOB

Moves the stage slightly to SHARPEN the image


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F. LIGHT SOURCE

Projects light UPWARDS through the diaphragm,

the SPECIMEN, and the LENSES


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G. BASE

Supports the MICROSCOPE

We always hold by base and arm.


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H. DIAPHRAGM

Regulates the amount of

LIGHT on the specimen


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Even before cells were discovered, people wanted tosee things far smaller than they could see with the

naked eye.


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In 1665, one scientist named Robert Hooke built amicroscope for himself to look at tiny objects.


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One day, Hooke decided to look at a thin slice of cork.Cork comes from the bark of cork trees.


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When he looked at the slice of cork under hismicroscope, the cork looked as if it were made of little

boxes. Hooke named these boxes cells, which meanslittle rooms.


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Hooke became the first person to describe that livingthings are composed of cells.


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Hooke also looked at feathers, fish scales and the eyes of

houseflies, but he spent most of his time looking atplants.


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Since plant cells have a cell wall surrounding theircells, it makes plant cells easier to see under a

microscope than cells from humans and animals.Because Hooke couldnt see the cells of animalsclearly, he thought that only plants were made of cellsand humans and animals were not made of cells.


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Just ten years after Hookes discovery, a Dutchmerchant named Anton van Leeuwenhoek, a major

microscope maker (constructed a total of 400microscopes during his lifetime!) used one of hismicroscopes to look at pond scum.


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With his microscope, he found small organisms living inthe pond water.


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He also looked at blood cells belonging to differentanimals and humans, and was the first person to ever

see bacteria under a microscope as well (using thebacteria found in his own mouth!).


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Glue Light Test to page 6LPass Down

Extra Credit Light Crossword Puzzle

cells day 1-king

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