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Properties of DNA
Concept Questions
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Concept
Questions


Image #1

Image #2

Image #3

Image #4
Question #1

One of the major discoveries made about the structure of DNA was the size of the intact molecule, and the way in which the components of the molecule were joined together. Image #2 shows part of the DNA molecule.

In which of the links below do you find a description of the relationship between protein molecular weights and the molecular weights being discovered for DNA?
Link-#22 Link-#63 Link-#87 Link-#39

Question #2

Image #2 shows one of the two complimentary strands of a DNA molecule. Such strands are synthesized (made) during DNA replication. However it took some time to find out just how the intact DNA molecule was made or replicated.

In which of the links below is the experiment described that finally showed the nature of DNA replication?

Link-#79 Link-#17 Link-#14 Link-#46

Question #3

In 1893 Kossel showed that "nuclein" contained a carbohydrate. He reported a "reducing sugar" in preparations of nuclein made from yeast.

In which of the links below is the sugar shown in Image #1 finaly discovered in "thymus nuclein" by Levene and Jacobs?

Link-#88 Link-#21 Link-#03 Link-#54

Question #4

Image #3 and Image #4 are illustrations of component parts of nucleic acids molecules. They are found in the center of the molecule, but are connected to other important component parts.

In which of the following links is there a description of how Levene and Jacobs demonstrated the connection between the illustrated components and the pentose sugar?

Link-#92 Link-#71 Link-#72 Link-#93

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© 2001, Professor John Blamire