lunes, 1 de junio de 2009

LINKS!!


Dear friends: I suggest you to follow this interesting links, in wich you will find interesting and detailed information about cells. You can also play interesting games that will help you understand better and enjoy learning.

Games:
http://www.jocjuegos.com/amoebas.html
http://nobelprize.org/educational_games/medicine/cell/game/
http://www.execulink.com/~ekimmel/drag_gr11/organell.htm
http://www.purposegames.com/game/153

Information:
http://www.biology4kids.com/files/cell_main.html
http://www.usd.edu/~bgoodman/ReviewFrames.htm
http://www.wisegeek.com/what-are-some-organelles-in-the-cell.htm
http://www.sciencegateway.org/resources/biologytext/cb/org/organelles.html

If you follow this link, you will be able to see a tables designed in Microsoft Excell, where it will be easier to view the cell organelles and their functions:
http://www.mediafire.com/?whexzxytnmx

BIBLIOGRAPHY
www.wikipedia.com
www.google.com
Prentice Hall Life Science (textbook)
Kelly Shoemaker (science teacher)

domingo, 17 de mayo de 2009

The Cell in its Environment




Selective permeable: some materials can pass through membrane while others can't



Diffusion: main method of movement of particles across the cell membrane



Osmosis: diffusion of water molecules across cell membrane



* the rule for diffusion and osmosis: molecules move from an area of high concentration to an area of low concentration



Equilibrium: balance of molecules


DIFFUSION
*sugar
*salt
*h2o
*co2
*o2
*food
*waste
*drugs/alcohol

(osmosis only water)





Chemical Compounds in Cells


The compound water (H2O) is very important for cells. They use it for chemical reactions. It also gives the cell its shape ans size.

Organic Compounds

Where it comes from

Function is cell

Carbohydrates

bread, pasta, rice, potatoes

Provide energy

Lipids

Fats, oils, waxes

Stored energy

Proteins

Meats, eggs, fish, nuts, beans

Building materials for hair, nails and heal cells

Nucleic Acids

DNA and RNA

Genetic information in cell

miércoles, 13 de mayo de 2009

Cell Organelles


Cells have many parts. But plant cells and animal cells are quite different. In this list you will see the organelles and their functions.


Cell Wall: protects and gives support.


Cell Membrane: controls what substances come in and out of the cell


Nucleus: control center


Cytoplasm: thick jell like fluid that holds organelles in place


Mitochondria: powerhouse/ converts food into energy


Endoplasmic Reticulum: carries proteins and other materials from one place to another


Ribosome: factories that produce proteins


Golgi Bodies: recieve proteins from Endoplasmic Reticulum, package, and distribute them to the cell


Chloroplast: capture energy from the sun and convert into food. (contains chlorophyl)


Vacuole: water and food storage area.


Lysosome: contain chemicals that break down waste in cell



NOTE *animal cells contain everything listed except cell wall and chloroplast.

* plant cells contain everything listed

* in animal cells, there are many small vacuoles, instead in plant cells there is one large vacuole

lunes, 11 de mayo de 2009

Project Introduction

Hi! My name is Geno Eguiguren. I'm a thirteen year old girl who lives in Quito, Ecuador. I study at Colegio Menor SFQ. I live with my parents and my brother. My favorite things to do are play soccer, ride horse and spend time with my friends. My best friends are Maria Jose, Valentina, Martina, Juliana and Claudia. They are really cool friends.

My goal is to make people know about cell organelles. I am a scientist who studies plants, animals, and their structures. The National Geographic Magazine hired me to make an investigation about cells to publish it in the June edition. I will also publish my investigation in this blog. My audience will be the readers of this magazine, the scientists I will show my work to, and the blog readers.

My work will be exposed in different ways. In Microsoft Excel I will make a chart of the cell organelles and its functions. In Macromedia Freehand I will make a drawing of a cell, and through this blog, I will write entrees to make my readers know more about my topic. I will also link you to interesting Web Pages, images and games.

I hope you enjoy my work.
If you have any questions or comments, feel free to express them.
Sincerely,
Geno