Helix

... on the same page with your characterization of a molecule. In this instance I would say that it is the totality of all bonded atoms of the double helix that make DNA a single molecule.

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... on this stuff, so maybe someone else will jump in. Still, I really appreciate you clearing up my confusion over the extent of the DNA double helix as it relates to the chromosomes.

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There are actually 92 separate DNA molecules. Your first explanation is correct but 1 double helix of DNA is strictly speaking composed of 2 DNA molecules attached by hydrogen bonds (and a lot of them)

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... and elongation process. Using ATP, they are able to pull the base pairs apart from the SSB proteins that has "straightened out" the DNA helix for the helicase to do its job. Thus each initiation to elongation complex has the helicase on board working to pull the DNA base pairs apart.

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... acids (Perutz, 1978). Both alpha and beta globin proteins share similar secondary and tertiary structures, each with 8 helical segments (labeled helix A-G) (Keates, 2004). Each globin chain also contains one heme molecule." FZ you have a diagram of the heme molecule. I knew it was way too ...

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