Wednesday, June 30, 2010

The cell

         All living things consists of cells. There are so many cells throughout our body that we cant count them all. The cells die and reproduce into millions of more cells. Plants have cells, and so do animals like ourselves. The plant cell has a cell wall, but the animal cell doesn't. There are many organelles in the cell, so I will only name a few of them in the plant cell and the animal cell.

Plant Cell
   Nuclear membrane- protects the 'nucleus' and opens numerous time for nucleic traffic throughout the cell.
Chloroplast- makes food for the plant using water, sun, and CO2 aka carbon dioxide.
Nucleus-  is the controller of the brain. Just like the mind controls actions.
Chromosomes- is in the nucleus. It is the ( DeoxyriboNucleic Acid) aka,DNA that our cell contains. It is blood.
Vacuoles- membrane-bound sacks for storage, digestion, and waste.
Cell wall- makes the plant cell stronger for protection.

Animal Cell
Nucleolus- produces ribosomes that move out of the nucleus and position their selves on the rough endoplasmic reticulum where they are critical in protein synthesis.
Cell membrane- every cell is enclosed by a double layer of lipid bilayer. It keeps the cell in one piece.
Cytoskeleton- helps keep the cell in one shape.
Lysosomes- they contain hydrolytic enzymes necessary for digestion processes.
Cytosol- is the "soup" within which all the other cell organelles resides and it is where a lot of cellular metabolism occurs.

Now you know some basic cell organelles. The advanced part is knowing all of the organelles and their functions.
Here are a couple of sites for cells:
http://www.cellsalive.com/cells/plntcell.htm
http://library.thinkquest.org/12413/structures.html
Thank you.
Shoot me an email at William0431@gmail.com if you have any questions.

 

Wednesday, June 23, 2010

Dinosaurs

   Dinosaurs were roaming Earth a few billions of years ago. And all they left were bones. There were carnivores, herbivores, and even omnivores, just like we have now. But most of the dinosaurs were carnivores and herbivores, there were rarely any omnivores. The carnivore had very sharp teeth to tear the flesh of their prey, and the herbivores had round teeth to grind the plants they ate. Herbivores ate just like modern day horses, tearing the plant of the root, and then pushes the plant to the very back of the jaw and do a circular motion to grind their food. We know what the dinosaur's bone structure looked like, what they sound like, and not that long ago, scientist found dinosaur skin. There were many dinosaurs back in the past and they are getting found now. You must think that dinosaurs close relative is the reptile. But you're wrong. The dinosaur's close relative is the modern day bird. The Velociraptor got the name 'dino-bird', because when the raptor jumped on it's prey, the arms would fold back like a bird.

Most favorite dinosaur
  The most known or favorite dinosaur is the Tyrannosaurs rex (T-rex for short). This dinosaur is in the movie Jurassic Park. Why is this dinosaur the most famous dinosaur? Well, to tell you the truth, I don't think anybody knows. My favorite dinosaur is the Velociraptor. So, I don't know what they are talking about.

The periods of when dinos lived
  The eras that dinosaurs lived in where the Jurassic, Triassic, and Cretaceous period. These periods were in the Mesozoic era. These are stretches of historical times of when dinosaurs lived.

Conclusion 
   Every single dinosaur will be found one day. But not modern day creatures. They are always evolving into new extraordinary things. So are plants. There are many dinosaurs to be found, but that is just a matter of time before that happens. If anything new pops up, I will tell you. If you have any questions, then please email me at """"William0431@gmail.com"""" There shall be more.