Embedded Files
Essential Idea:
Essential Idea:
The structure of DNA allows efficient storage of genetic information
The structure of DNA allows efficient storage of genetic information
Understandings:
- The nucleic acids DNA and RNA are polymers of nucleotides.
- DNA differs from RNA in the number of strands present, the base composition and the type of pentose.
- DNA is a double helix made of two antiparallel strands of nucleotides linked by hydrogen bonding between complementary base pairs.
Applications and skills:
- Application: Crick and Watson’s elucidation of the structure of DNA using model making.
Skills:
- Skill: Drawing simple diagrams of the structure of single nucleotides of DNA and RNA, using circles, pentagons and rectangles to represent phosphates, pentoses and bases.
Theory of knowledge:
- The story of the elucidation of the structure of DNA illustrates that cooperation and collaboration among scientists exists alongside competition between research groups. To what extent is research in secret ‘anti-scientific’? What is the relationship between shared and personal knowledge in the natural sciences?
Nature of science:
Using models as representation of the real world—Crick and Watson used model making to discover the structure of DNA. (1.10)
- Use the links to find out more about Crick and Watson:
- How I discovered DNA by James Watson
- The DNA molecule by DNA from the beginning
- Discovering the double helix structure of DNA from the DNA Learning Center includes an interview with James Watson
Theory of knowledge:
The story of the elucidation of the structure of DNA illustrates that cooperation and collaboration among scientists exists alongside competition between research groups. To what extent is research in secret ‘anti-scientific’? What is the relationship between shared and personal knowledge in the natural sciences?
Introductory Video
Introductory Video
Powerpoint
Powerpoint
2.6 Strucure of DNA and RNA.pdfUseful Video Clips
Useful Video Clips
Unit Summary Questions
Unit Summary Questions
2.6 Strucure and Function of DNA and RNA Summary Questions.pdfdna_structure_ibstyle_qns Inthinking.pdfGoogle Sites
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