Collagen: Polypeptide Chain 35% (approx) Glycine Fibrous Protein 3 strands linked together with Hydrogen bonds as cross-links Covalent bonds between separate collagen molecules As for function: Used in tendons/cartilage/bones are made initially from collagen I think/also used in beauty treatments lol
Cellulose: B-Glucose Polymer 1,4 glycosidic bonds #covalent Arranged into micro, then macrofibrils Function: Strengthen cell walls in plants Also indigestible by humans as we don't have the correct enzymes #activesite
Sure there's more on cellulose but that's all I can remember at this moment!!
Collagen has covalent bond cross links and the fact that cellulose isn't digestible by humans wouldn't be a function. Collagen is made of amino acids and its in arteries. There's my input haha
and EIA, all you have to say is assess the biodiversity, identify any rare species and change the planning around to minimise the impact of the construction. Or put steps into place to ensure survival of species.
Collagen has covalent bond cross links and the fact that cellulose isn't digestible by humans wouldn't be a function. Collagen is made of amino acids and its in arteries. There's my input haha
5 mins of quick research and google has got me to believe there are both hydrogen and covalent bonds between individual polypeptide chains; forming the quaternary structure of the molecule. So we were both right
Can anyone tell me how free carbon monoxide in the blood can damage artery walls?
It's the fact that haemoglobin associates with it in preference to oxygen, so there is less oxygen in the blood. The body detects this and heart rate and blood pressure increases - damaging the arterial walls. Also the cells in the arterial wall don't recieve enough oxygen, so become damaged. The damaged wall will lead to atheroschlerosis
Can anyone tell me how free carbon monoxide in the blood can damage artery walls?
Damages inner linings of the arteries (factors such as high blood pressure increase the damage) So the damage is repaired by the phagocytes, and this encourages growth of smooth muscle and deposition of fatty substances. So it causes atherosclerosis (Because of the build up fatty acids)
During protein synthesis, when mRNA is made from a strand of DNA (transcription), Free nucleotides pair up with complementary bases and then they are linked together by RNA polymerase.
Kingdoms: Animalia, Plantae, Proakryotae, Fungi, Protoctista Mostly based on the observable characteristics of organisms
Domains: Bacteria, Archaea & Eukaryotae Based on the molecular evidence that the Archea & Bacteria groups have differing cell membrane, flagella & RNA polymerase structure to each other Uses evidence such as Cytochrome C structure and DNA/RNA composition
I didn't do any past papers, lol, but I am dropping biology regardless of the grade. Having spent the whole of yesterday revising from the cgp guide, I liked it
I didn't do any past papers, lol, but I am dropping biology regardless of the grade. Having spent the whole of yesterday revising from the cgp guide, I liked it
was the paper harder or easier than thE Jan 2013? did it have lots of biodiversity
Which one was the phagocyte. I had no clue put B :L Other than that I thought it was a nice paper. quite straightforward when compared to last years June 2012 f212 which was disgusting.