Featuring a drop from the sea of knowledge available out there in the field of natural sciences to enrich the lives of each mortal sojourning in this terrestrial ball.
Wednesday, September 02, 2009
Learn Your Arteries
Stumbled upon this website to help us learn about our arteries and thought I'd share it here as part of the lesson on Mammalian Transport.
this is exactly(this are main branches la.. thn gt somemore also..) wat we r studying nw sir... im prep for the exam... its in two weeks... n the site can really help!!.. heheh, thx mr jaya ;)
yea, i can imagine allright. anyway, i wanted to ask, what is the function of pentose and the phosphate in the backbone of the DNA strand? for instance, the characteristic of phosphate a hydrophillic or sugar being a reactive, soluble molecule, is there a function for them in relation to these characteristics?
hhmmm...those are very good question kathleen. i've tried looking it up and i can't seem to find any info on them. it would be good if we can see how the pentose and phosphates affect the function of the DNA and RNA molecules. anyone else can help with this?
i also can't seem to find info on aiman's question as well. he asked about what affects the affinity of fetal hemoglobin, causing it to have a higher affinity to oxygen as compared to normal hemoglobin.
i welcome help from others if anyone else knows the answers to these questions.
oh, about the fetal haemoglobin affinity, i found that there is a substance called 2,3-bisphosphoglycerate in both adult and fetal RBC which binds easily to partially deoxygenated haemoglobin when near a respiring cell to help kick out the remaining oxygen molecules. in other words the substance is reducing the affinity of the haemoglobin towards oxygen. Now, even though this substance is present in fetal RBC it does not interact with fetal haemoglobin. therefore, in comparison with adult haemoglobin that has reduced affinity towards oxygen because of this substance, fetal haemoglobin has a higher affinity.
in short, adult haemoglobin actually has a higher affinity towards oxygen than fetal haemoglobin but the bisphosphoglycerate reduces it's affinity.
phew, hope i got that right. read it on bloodjournal.hematology.org
15 comments:
wow, that's intense! took a good chunk of time to understand the diagrams..but helpful in forming a clear view of our system nonetheless
wow, this is alevel syl? or foundation sir? awesome site mr jaya!! thank you :)
intense huh? helps you imagine what it would be like if you were a med student. ;)
hey sakun. this is not in the syllabus actually. just some additional info for those who might be interested.
this is exactly(this are main branches la.. thn gt somemore also..) wat we r studying nw sir... im prep for the exam... its in two weeks... n the site can really help!!.. heheh, thx mr jaya ;)
so glad this helps. :)
yea, i can imagine allright. anyway, i wanted to ask, what is the function of pentose and the phosphate in the backbone of the DNA strand? for instance, the characteristic of phosphate a hydrophillic or sugar being a reactive, soluble molecule, is there a function for them in relation to these characteristics?
hhmmm...those are very good question kathleen. i've tried looking it up and i can't seem to find any info on them. it would be good if we can see how the pentose and phosphates affect the function of the DNA and RNA molecules. anyone else can help with this?
i also can't seem to find info on aiman's question as well. he asked about what affects the affinity of fetal hemoglobin, causing it to have a higher affinity to oxygen as compared to normal hemoglobin.
i welcome help from others if anyone else knows the answers to these questions.
oh, about the fetal haemoglobin affinity, i found that there is a substance called 2,3-bisphosphoglycerate in both adult and fetal RBC which binds easily to partially deoxygenated haemoglobin when near a respiring cell to help kick out the remaining oxygen molecules. in other words the substance is reducing the affinity of the haemoglobin towards oxygen. Now, even though this substance is present in fetal RBC it does not interact with fetal haemoglobin. therefore, in comparison with adult haemoglobin that has reduced affinity towards oxygen because of this substance, fetal haemoglobin has a higher affinity.
in short, adult haemoglobin actually has a higher affinity towards oxygen than fetal haemoglobin but the bisphosphoglycerate reduces it's affinity.
phew, hope i got that right.
read it on bloodjournal.hematology.org
hey kathleen, thanks for that explanation. good job! :) what's better is that you cited the source. great!
thanks, sorry, mistake, it is bloodjournal.hematologylibrary.org
Waaa... it has been a long time since I visited your blog, sir... I miss this place...
then you must visit more often. ;)
WHOA!
I could use this!
and being a med student ain't as tough as ppl make it out to be
work hard yes
but play harder!
THATS the key!
;)
btw
hey sakun!
long time no on9
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