Monday, September 27, 2010

What I can teach my teacher presentation

Strengths and Weaknesses

3 things I am good at:
 I am good at creating/managing a wiki
  I am good at blogging
              I am good at remembering the DNA coding
3 things I am struggling with:
  I did bad on my mutation quiz so I should work on that
 I need to work on remembering what happens in all of the stages of mitosis.
 I need to work on making my pictures I make on paint more neat.

Monday, September 20, 2010

Mitosis

Mitosis
View more presentations from James McCartney.

Mitosis is when the Cell divides into 2 cells with 46 chromosomes in each of the cells. First, the cell goes through prophase which is when the nucleolus fades and the nucleolus fades and the chromatin condenses into chromosomes. Each replicated has 2 chromatids, both with the same genetic information. Microtubules of the cytoskeleton, responsible for cell shape, mobility and attachment to other cells during interphase disassemble. And the building blocks of these microtubules are used to grow the mitotic spindle from the region of the centrosomes.
Next is prometaphase. In this stage, the nuclear envelope breaks down so there is no longer a recognizable nucleus. Some mitotic spindle fibers elongate from the centrosomes and attach to kinetochores, protein bundles at the centromere region on the chromosomes where sister chromotids are joined. Other spindle fibers elongate but instead of attaching to chromosomes, overlap each other at the cell center.
The stage after Prometaphase is Metaphase. Metaphase is the tension applied by the spindle fibers aligns all chromosomes in one plane at the center of the cell.
Next is anaphase. Anaphase is when the spindle fibers shorten, the kinetochores separate, and the chromatids are pulled apart and begin moving to the cell poles.
Telophase is when the daughter chromosomes arrive at the poles and the spindle fibers that have pulled them apart disappear.
Cytokinesis is the last stage before starting at interphase again. Cytokinesis is when the spindle fibers not attaché to chromosomes begin breaking down until only that portion of overlap is left. It is in this region that a contractile ring cleaves the cell into two daughter cells. Microtubules then reorganize into a new cytoskeleton for the return to interphase.
Mitosis is important because it makes new cells so we can constantly have new cells as the old cells die.
During mitosis, the chromosomes are copied into the new cells and repackaged. During Prophase the chromosomes condense. During Metaphase, the chromosomes line up the middle of the cell. During Anaphase, the chromosomes split in the middle. During telophase, the chromosomes are divided into 2 portions.

Thursday, September 16, 2010

Pros and Cons of Several Browsers

Pro's and Con's of 5 different web browsers

Google Chrome:

Pro's: 1. The startup speed of google chrome is very fast
2. The pages open up very fast
3. It has a built in search engine in the URL bar
4. It has a cool homepage that shows you you're most visited pages
5. Built in bookmark and history sync
6. Built in application shortcuts
7. It doesn't crash very often

Con's:
  1. Chrome does not have alot of add-ons like firefox
2. There is alot of memory usage
3. There is barely any buttons like file, edit, view, bookmarks, tools etc


Opera:

Pro's:
  1. It has a nice look to it
2. Easy to use
3. It has the option of Opera Turbo which speeds it up if you are using a slow network
4. It has Widgets
5. If you accidentaly close a tab you can recover it by going to closed tabs.

Con's : 1. It seems slower compared to the other browsers
           2. opera does not have automatic updates so you have to manually get them and if you dont it will      impact your browsing speeds.





Internet Explorer:

Pros: 1. An RSS feed on your favorites bar will indicate to you any updated content on sites that you put in your favorites.
                         2. Already in your computer when you buy it
                         3. Most common browser
                         4. If it crashes, you can recover your tabs


                Cons: 1. Its slow
                          2. It stops working
                          3. Slower start up speed






                Firefox: 
pros:  1. fast speeds
         2. internet security
         3. Tabbed browsing
         4. if you accidentally turn off your computer firefox will remember which internet pages you had open and offer to get them back to you
         5. lots of add-ons and themes for customization.


cons: 1. some websites will not show up properly on firefox due to compatability issues
         2. It requires alot of memory to run 
         3. It tends to freeze
         4. If a download is interrupted, you will have to restart your download.




Safari:
          Pros: 1. speed is good
                   2. you can import bookmarks
                                   3. you can drag tabs into new windows
                                   4. you can drag links into new tabs
                                   5. it has highlighted textarea/input


                          Cons: 1. dragging bookmarks into new tabs deletes them
                                    2. close button is on left side
                                    3. no status bar at bottom
                                    4. no integration of plugins


Overall i think that google chrome is the best

Tuesday, September 14, 2010

My first blog

James's Digital Immersion Blog
This year in digital immersion i want to learn how to make a website without using sites like freewebs.com and piczo.com
I am looking forward doing the digital backpack, the passion project, and i am looking forward to learning office live.
The three things i am nervous is the amount of work compared to middle school, I am nervous about the amount of studying this year, and i'm nervous about tests. I am also nervous about my computer breaking or turning off and losing everything.
the three things i know and am bringing to this class is my knowledge of microsoft office programs, I know how to download music from youtube, I know how to use excel using the formulas.