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3.2.2 DNA. L.O: To recall information from GCSE about DNA To improve genetic vocabulary from KS4 to KS5 Homework: Research who discovered DNA and write a short summary on this major discovery. Due Friday 16 th. What do you know about DNA?.

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3 2 2 dna
3.2.2 DNA

L.O:

  • To recall information from GCSE about DNA
  • To improve genetic vocabulary from KS4 to KS5

Homework: Research who discovered DNA and write a short summary on this major discovery. Due Friday 16th.

what do you know about dna
What do you know about DNA?
  • In small groups, using the picture as an aid, write as much as you know about DNA on the A3 sheet.
  • Highlight any keywords, can you get more than 10?
  • What point on your sheet do you think is the most important? Put a ‘*’ next to it
share the knowledge
Share the knowledge!
  • Swap sheets
  • In 60 seconds, add as much detail as possible to their poster
add to your knowledge
Add to your knowledge!
  • http://www.youtube.com/watch?v=FUA6_Ucw3i4
nucleotides
Nucleotides!

This is a MONONUCLEOTIDE, if you joined two together what would you get? And then many? And how would they join?

Basic structure…

Deoxyribose

nucleotides1
Nucleotides!

This is a MONONUCLEOTIDE, if you joined two together what would you get? And then many? And how would they join?

Basic structure…

Two = dinucleotide. Many = polynucleotide.

Join together by a condensation reaction.

Deoxyribose

slide7

5) Remember that A pairs with T, and G pairs with C

Questions to think about… What do you notice about the directions the nucleotides on each side? Why do you think the bases (A T C G) are on the inside?

slide9

The strands are anti-parallel (go in two different directions)

Sugar – phosphate backbone

slide10

The strands are anti-parallel (go in two different directions)

2 hydrogen bonds between A and T

Sugar – phosphate backbone

3 hydrogen bonds between G and C

slide11

The strands are anti-parallel (go in two different directions)

DNA is a stable molecule of hereditary

2 hydrogen bonds between A and T

Sugar – phosphate backbone

3 hydrogen bonds between G and C

plenary
Plenary
  • What do you know now that you didn’t know 60 mins ago?
  • How could you best demonstrate your new knowledge about DNA?
  • What do you think we might learn next lesson?
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