Haemoglobin and oxygen Flashcards
1
Q
What is the main role of the cardiovascular system?
A
Transport oxygen and glucose torespiring tissues
2
Q
What does oxygen bird to in red blood cells?
A
Haemoglobin
3
Q
What is haemoglobin?
A
A protein
4
Q
What protein structure does it have?
A
Quaternary
5
Q
Why does it have a quaternary structure?
A
It has 4 polypeptide chains
6
Q
Define quaternary structure
A
2 or more polypeptide chains
7
Q
What are the polypeptide chains referred as?
A
Haem groups
8
Q
What is a haem group?
A
An iron ion
9
Q
What type of chains are they?
A
Alpha and beta
10
Q
What does each haem group contain?
A
- Ferrous ion
- one molecule of oxygen O2
11
Q
How many oxygens are there altogether ?
A
8
12
Q
Define partial pressure:
A
Concentration of oxygen
13
Q
Define loading:
A
haemoglebin picking up oxygen
14
Q
Define unloading;
A
Haemoglobin releasing oxygen
15
Q
Define affinity
A
Attraction
