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Friday 22 February 2019

DNA🔬

🔬DNA 🔬


What is DNA?
The structure of deoxyribonucleic acid (DNA) in the same as all living things. It is said that it looks like a twisted ladder (non-scientific) it can also be known as a double helix which is the scientific name for it. DNA is made up of simple repeating units called nucleotides. A nucleotide is made up of sugar, a phosphate and some type of base. A DNA strand side is made up of sugar and phosphate these are joined together by chemicals called nucleotide base. 
DNA replication?
DNA replication is when a DNA clones itself during cell division (Cell division is when a parent cell divides into two more daughter cells). When the enzyme unwinds the parent DNA new nucleotides are brought in. When in they bond with the base that is on the parent DNA, because of this they end up bonding together to create a new strand. When this process is finished in the end there will be two more new molecules of DNA. These new DNA molecules are both exact copies of the original molecule. 
I got this information from:https://www.yourgenome.org/facts/what-is-dna-replication 
Double helix mad out of pipe cleaners:
Double helix: a pair of parallel helices intertwined about a common axis, especially that in the structure of the DNA molecule.

Aim: to make a double helix out of pipe cleaners Succesful.

Equipment: Red, Blue, Yellow and green pipe cleaners, scissors. 
Method: 


  1. Find some pipe cleaners.
  2. Separate the pipe cleaners into colour coordination piles.
  3. Get you blue and red pipe cleaners and twist them around each other. (do it twice)
  4. Twist the yellow and green pipe cleaners around each other. 
  5. Cut the green and yellow pipe cleaner into 7-8 cm size.
  6. Lay both the red and blue pipe cleaners side by side so they are parallel from each other.
  7. Put the green and yellow pipe cleaners in between them.
  8. Connect them at the ends.
Observation:
While making double helix this I found it hard to get the right length.
What I might do next time?
If I was to do this again I think I would want to do something more challenging like extracting DNA from fruit instead of making something out of pipe cleaners. If I had to make a pipe cleaner one again I would like to get the colours different so they are more similar to a real DNA strand.

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