Pages

Sunday, January 9, 2011

James Watson & Francis Crick Credited For First Model Of The DNA Structure

These two men, James Watson and Francis Crick were the first to receive credit for discovering their structure & building of the first model of the DNA structure.

Saturday, January 8, 2011

Thursday, January 6, 2011

Cells, Organelles, & Their Main Parts

This is a picture of cells, the organelles & their main parts. The Cytoskeleton, Gogli apparatus, rough endoplasmic reticulum (rougher), smooth endoplasmic reticulum (smoother), ribosomes, nucleolus, nucleolus & the mitochondrion. Some other major parts that are not included are the vesicles, centrosomes, the cell membrane, the vacuole, chloroplast, central vacuole & the cell wall. And the meanings of these terms: The Cytoskeleton is the network of proteins that is constantly changing to meet the needs of the cell. The gogli apparatus repackages the proteins & send them in & out of the cell. The Rough Er is where the proteins are made & the Smooth Er breaks down all the fats & toxins. The Ribosomes makes the proteins, The nucleolus is located inside of the nucleus which is where also the ribosomes are made. The Vesicles is the small membrane-bound sacs that divide few materials. The Vacuole is the storage of the cell and the cell wall is a rigid layer that gives protection, support and shape to the cell.

Wednesday, January 5, 2011

Animal Cells

This is a picture of the animal cells. Animal Cells & Plant Cells have mostly the same parts except the lysosome & the centriole.

Monday, January 3, 2011

Double Helix Known As A Twisted Ladder

Rosalind Franklin was the first woman who took the first picture of DNA. As you see this picture of these crazy colors & this twisted formation you're probaly thinking what is this. Well, the twisted like kind of bars is the sugar phosphate backbone on the right above. It contains two. That is what contains the four different nitrogen bases. Adenine, Thymine, cytosine, & guanine. And these are the base pairs, Adenine with Thymine & Guanine with Cytosine. Everyone has a unique DNA molecule & it is what makes you YOU !!!!

Sunday, January 2, 2011

Quiz !!

1. What were the 4 nitrogen bases of the DNA structure called ?
2. True or False, For the base pairs is Adenine matched with Guanine ?
3. What were the main parts of the cell ?
4. How are cells ?
A. Large
B. Tiny
C. Small
D. Gigantic
5. In the video, how is the bacteria cells different from the cells of plants & animals ?