Qualification > Sciences
Edexcel BIOLOGY Doubts!!!!
-Cornea:
Why it is important to have calcum ions during the process of blood clotting :D? My teacher said i don't really have to know this but iam really curiuos=p
Deadly_king:
--- Quote from: Pink Princess on November 24, 2010, 07:46:32 am ---Why it is important to have calcum ions during the process of blood clotting :D? My teacher said i don't really have to know this but iam really curiuos=p
--- End quote ---
Blood clotting is a very complex matter. I'll try to just summarise the bit concerning calcium ions. ;)
Blood cloting involves a process called coagualtion. Blood coagulation is a complex biochemical process involving platelets and dozens of proteins. Activation of platelets triggers a multistep "cascade" that produces a "thrombus" or clot. Calcium is involved at several steps in this cascade, including the activation of the platelets themselves. Coagulation is so dependent on calcium that blood banks routinely add citric acid to banked blood to bind ionized calcium and prevent the product from clotting before it can be used.
I'll advice you to restrict yourself to the syllabus for the time being. I understand that biology is a very interesting subjects which catches your attention easily and makes you wana know more. I've experienced that feeling myself years ago ;D
But please, keep these things outside the syllabus after you have done with your exams. You'll then have the luxury of making research concerning anything yourself. ;)
Master_Key:
--- Quote from: Deadly_king on November 23, 2010, 05:07:40 pm ---A triglyceride will consist of 3 fatty acids joined b y ester bonds with a glycerol. Any of the three fatty acids, if it contains a double bond will cause the triglyceride to be saturated. ;)
I'll try to help you as much as I can. :D
In protein the main type of bond i peptide or amide bond. But later you'll do the different structures of proteins and the oether bonds which define each one of them. ;)
No worries.......your questions are not stupid. :)
--- End quote ---
There are 5 bonds:-
COVALENT BONDS (mainly peptides for organic proteins, not synthetic) (amide in polyester and other)
IONIC BONDS
HYDROGEN BONDS
DISULPHIDE BONDS
HYDROPHOBIC INTERACTIONS
Deadly_king:
--- Quote from: Master_Key on November 24, 2010, 01:41:39 pm ---There are 4 bonds:-
COVALENT BONDS
HYDROGEN BONDS
DISULPHIDE BONDS
HYDROPHOBIC INTERACTIONS
--- End quote ---
There is also ionic bonds dude :D
So in all that makes 5 bonds. I did not mention it because I wanted her to do it in class first. ;)
covalent bonds ----> peptide or amide
Master_Key:
--- Quote from: Deadly_king on November 24, 2010, 01:57:48 pm ---There is also ionic bonds dude :D
So in all that makes 5 bonds. I did not mention it because I wanted her to do it in class first. ;)
covalent bonds ----> peptide or amide
--- End quote ---
check above, i thought that that much would be enough for her.
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