Monday, February 14, 2011

DNA and RNA

Today in class we went over the homework. The test is on Thursday!


DNA stands for Deoxyribonucleic Acid.

RNA stands for Ribonucleic Acid.

DNA replication is when cells reproduce.

DNA Molecule is made up of nucleic acid(nitrogen bases).

50% of DNA is new. 50% of it is old. This is called Semi-Conservation.

Semi means half and conservation means to save. Semi-Conservations means to save half of the old DNA.

DNA has two strands of sugar, RNA has one strand.

RNA uses Uracil. DNA uses Thymine.

EXAMPLE: The zipper of a jacket, the "teeth" of the zipper are either cytosine, guanine, adenine, uracil, or thymine.
If you are still a little confused this website may help



~RACHEL RILLO~

3 comments:

  1. DNA replication is not when cells reproduce, but when the DNA is copied, resulting in two DNA strands. This process though, is used for cellular reproducton.

    Rohan

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  2. Wait, so DNA replication is only one part of cellular reproduction right????
    ~Erica Wirth~

    ReplyDelete