The cat

Topics: DNA, Gene, RNA Pages: 4 (1042 words) Published: March 5, 2014
Year 10 Science: DNA Presentation
Your presentation must include:
Criteria - Diagram Explanation
A - Clearly explains reasons why diagram was used, and clearly explains the structure of DNA An explanation of how you chose what sort of labelled diagram to include: The structure of the double helix allows for the DNA to be tightly packed into chromosomes. It also provides an extremely stable backbone with the negatively charged phosphates pointing to the outside of the molecule. This charge aids in the attachment of other molecules to the strand of DNA.  The strands are anti-parallel, meaning that each strand codes for the other strand. If one strand is messed up in replication, then there is still another perfect copy on the other side. The double helix is the perfect shape of a molecule that is as important as DNA. It is extremely stable, and relatively simple. The discovery of the double helix structure of DNA was significant because it showed that nature has a way of making things as simple and as efficient as possible.

Criteria - Timeline explanation
A - Explains clearly and gives valid reasons for importance
An explanation of why you chose those significant events to include in your timeline:

No rubric criteria/grade
An explanation of how you interoperate genes, chromosomes, DNA, proteins and amino acids to be related: In higher organisms DNA is located in the cell nucleus. The DNA in one human cell contains about 100,000 genes, located on 46 chromosomes. The genetic information in the DNA is stored as a sequence of bases (or nucleotides). The bases are stacked in between the two strands which wind around each other. The order of the bases determines the genetic information. When a gene is activated, the DNA strands separate and one of them serves as a template for copying a messenger RNA (mRNA). The letters represent the bases adenine (A), thymine (T), guanine (G) and cytosine (C). In the double helix, A always pairs with T, and C with G. In...
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