Cells

Plant cells & Animal cells By Greg Kozmon

Class presentation EDU. 553

1 02/26/09

Introduction  An

introduction to plant and animal cells  The class will explore the differences between the two types of cells

Class presentation EDU. 553

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Overview  In

the same way there are different kinds of cells inside you, different organisms have different types of cells. Trees have different cells than you and so do monkeys. Each of those cells is different in some way. 

Class presentation EDU. 553

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Vocabulary 

Cell Membrane: Membrane The purpose of the cell membrane is to hold the cell together. It keeps all of the pieces, like the organelles and the CYTOPLASM, inside.

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Cell Wall: Wall Cell walls help the plant maintain its shape. Walls also help the plant keep its structure consistent

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Nucleus: Nucleus The NUCLEUS is like the brain of the cell. If you take the nucleus out of a cell it dies. It is the thing that tells every part of the cell what to do. It even tells the cell when to divide. 

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Endoplasmic Reticulum: Reticulum The purpose of the ER is to collect proteins and create something called steroids and store ions

Class presentation EDU. 553

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Vocabulary

Ribosomes are the protein builders of  the cell.  When they build proteins, scientists say that  they SYNTHESIZE the proteins. Ribosomes are found  either floating around in the CYTOPLASM or attached  to the Endoplasmic Reticulum (ER). The floating  ribosomes synthesize proteins that will be used inside  the cell. The ribosomes attached to the ER make  proteins that will be used inside the cell AND sent  outside the cell.  Ribosomes: Ribosomes

Vacuoles are bubbles that float in the cell.  Those bubbles store the different molecules a cell  needs to survive. Some contain food and others hold  oil. There are even vacuoles that hold onto waste  products. Vacuoles: Vacuoles

Class presentation EDU. 553

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Vocabulary Mitochondria: Mitochondria The big thing you need to remember about MITOCHONDRIA is that they are the cell's little powerhouses. They are the thing that lets cells survive. Their whole purpose is to break down food molecules so that the cell has the energy to live.

Chloroplasts: Chloroplasts are very much like mitochondria. The big difference is that instead of taking food and breaking it down into energy, chloroplasts take energy from the sun and create food. Class presentation EDU. 553

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Vocabulary 

Lysosome: Lysosome Lysosomes combine with the food taken in by the cell. The enzymes in the lysosome bond to the food and start to digest it. 

Class presentation EDU. 553

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Plant cells 

Plant cells have different structures than animal cells

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. Plant cells have something called a CELL WALL while animals do not.

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Plant cells have an organelle called a CHLOROPLAST that takes energy from the sun and converts it into sugars. 

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Does your body make sugar from the sun or do you get it from food?

Class presentation EDU. 553

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Animal Cells 

Animal cells organize the body. You have brain cells, stomach cells, bone cells, and many other types of cells. Each is different from the others. 

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Nerve cells conduct electrical impulses through the body. There are cells in your intestine that absorb nutrients from the food you eat. Stomach cells secrete an acid to digest your food

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Do you think that your skin cells can absorb the nutrients from your lunch? Why not?

Class presentation EDU. 553

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Summary  During

this presentation we learned about some of the basic differences between animal cells and plant cells.

 Cells

have common pieces, but each cell has different parts depending on what it does. 

Class presentation EDU. 553

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Where to Get More Information  http://www.kapili.com/c/cell.html  http://www.thinkquest.org/library/lib/site_

sum_outside.html?tname=C004535&url= C004535/  http://mindquest.net/biology/cellbiology/cell-biology.html

Class presentation EDU. 553

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