VCE Stuff > VCE Biology
VCE Biology Question Thread
DJA:
Thanks both of you!
I'm assuming that the way the nucleotides bond together to form long chains (DNA and RNA) is through a condensation reaction between the -phosphate group and the -OH group of two nucleotides?
alondouek:
--- Quote from: DJALogical on December 27, 2013, 05:12:25 pm ---Thanks both of you!
I'm assuming that the way the nucleotides bond together to form long chains (DNA and RNA) is through a condensation reaction between the -phosphate group and the -OH group of two nucleotides?
--- End quote ---
DNA and RNA polymerise by connecting part of the phosphate group to one of the deoxyribose/ribose carbons (5' if I recall correctly). Here's a really good link that explain DNA polymerisation: http://www.chem.wisc.edu/deptfiles/genchem/netorial/modules/biomolecules/modules/dna1/dna13.htm
DJA:
What is the point of the DNA strands found in chloroplasts?
alondouek:
ctDNA has a number of purposes, for example protein production (as with many other types of DNA) for photosynthetic processes.
Yacoubb:
--- Quote from: DJALogical on December 27, 2013, 05:51:26 pm ---What is the point of the DNA strands found in chloroplasts?
--- End quote ---
For the purposes of VCE Biology, it would be sufficient to know 2 things:
~ ctDNA provides the set of genetic instructions required to synthesise specific proteins required for photosynthesis (e.g. the enzyme RuBisCO).
~ ctDNA provides evidence for the endosymbiotic theory of evolution (which you'll cover more in unit 4).
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version