Science

This week in science we did a lot of things. We had a unit test on how celluar respiration and on the things before that.
On Tuesday, we reviewed for the teas on Tuesday by watching a video on how our skin and body is crawling with living organisms. On Wednesday, we had the test on The things we learnt on cells before.
On Thursday we looked at cells under the microscope to learn about mitosis, which is when cells reproduce.
On Friday, we went to a website that shows the different stager of mitosis and did a workshhet on it. Here is the website: http://www.cellsalive.com/mitosis.htm.

Science This Week

This week in science, we studied how a cell reproduces a cell. The process is called mitosis. The cell first starts as a cell with a nucleas, (a regular cell), Then it gets a fuzzy circle around the nucleas.Next there is a giant nucleas. And finally, the cell divides into another cell and another cell gets created. The exact DNA of the prexisting cell was copied and then put into the new cell.

This is a website that shows an animation of this:http://www.cellsalive.com/mitosis.htm.
We also learnt how mRNA gets translated by the ribosome. This is a good show to go to that will explain how transcription and translation takes place:http://www.youtube.com/watch?v=nl8pSlonmA0

During the week in science, we did a lot of things.Here is what we did;




We learnt how to decifer DNA and RNA reading. this is an image of RNA being translated by a ribosome.











Below is a website that explains mRNA translation.
http://www.biology.iupui.edu/biocourses/N100/2k3ch13dogma.html



When a cell needs to make new proteins, it sends out a part of its DNA called RNA. That Messenger RNA goes to the ribosome that is on the outside of the nucleas and gets read by it. The ribosome then creates the proteins that the mRNA told it to make. Those proteins then go to the golgi apparatus to get sent to the part of the cell that needs
it.

We also learnt why a fish cannot survive out of water.This is how: When a fish is in the water, the fish's gills filter out the water and other chemicals in the water. Then it only allows the oxygen to get into the fish so the fish could breathe.
If the fish was out of the water, the fish would not be able to breathe because the gills of the fish cannot filter the other gasses in the air and only let the oxygen in. Therefore the wish will suffocate to death.