AQA BIOL2~3rd June 2013~AS Biology (Now Closed) Watch
Has anyone done the haemoglobin dissociation curve and the Bohr effect yet??
I'm not sure If this is correct as I am not sure whether I remember it, but I will have a go . Bohr Effect describes That the less Carbon Dioxide here is in the blood the haemoglobin has a stronger affinity for Oxygen and so Oxygen is not released. Then when Carbon dioxide Partial pressures are high the haemoglobin is more likely to release the Oxygen as it has less affinity for Oxygen.
(then You give the answer-after you have read it and tell me how many marks I would of got out of a certain number of marks, then you answer my question)
Describe the sub-units that make up the Nucleotide structure. (To include the names of the 4 bases) (6 marks)
There are 3 sub-units, there is a 5 carbon deoxyribose sugar, an organic base and a phosphate group. The bases are in two's, each base is complementary to the one it bonds with. Adenine pairs with Thymine, Cytosine pairs with Guanine. 2 hydrogen bonds form between A and T, and 3 form between C and G. These bases also form the triplet code, 3 bases code for one amino acid. Single rings are T and C, double ring bases are G and A.
Why is it advantageous for the oxygen dissociation curve being more to the right for a mouse? Explain. (3 marks)
Posted from TSR Mobile
My advice to you guys is to try and do as well as you can on this module as it is easier to score high marks as it holds more weight than Unit 1.
This module is nice anyway
Ask your teacher? I think teachers can get early access to them.
1) Their structure (primary, secondary, tertiary, quaternary)
2) The role of haemoglobin
3) Why there are different types of haemoglobin and be able to talk about them
4) Oxygen affinity, unloading and loading
5) Oxygen dissociation curves
Have you got the Nelson Thornes text book?
Hope this helps
What results did people get? I got a B in biology, am really glad but will still try to retake see if I can an A ^.^ Also got an A in Maths C1 (Yay, one I won't have to retake!) and a C in Physics G481 (darn really hated this unit, was really hoping I wouldn't have to retake it). What other subjects and results did you all get?
I revised from the very beginning of the course I read from revision books, took notes and most importantly, practise papers! I literally did all the practise papers for bio1. It's a good way to know what kind if answers the individual exam board is looking for. I got a B, literally was 1 raw mark off an A!
Posted from TSR Mobile