Mass Transport Flashcards
(14 cards)
What is Haemoglobin’s function?
To transport oxygen around the body.
What is a conjugated protein?
A protein that combines with another molecule which is called a prosthetic group.
What is Haemoglobin’s prosthetic group?
Haem - iron containing compound
Why can haemoglobin be described as a globular protein?
It’s round, compact and easily soluble so can be transported by liquids.
Describe Haemoglobin’s primary structure.
The sequence of animo acids in the 4 polypeptide chains.
Describe Haemoglobin’s secondary structure.
Each polypeptide chain is coiled into a helix.
Describe the tertiary structure of haemoglobin.
Each chain is older into a precise shape, which allows it to carry oxygen.
Describe the quaternary structure of haemoglobin.
All 4 chains are linked to form a spherical molecule. Each chain has a haem group which can combine with oxygen.
What is loading?
The process where oxygen binds to haemoglobin in the lungs.
What is unloading?
The process where haemoglobin releases oxygen in the tissues.
What is an oxyhemoglobin?
Haemoglobin that is bound to oxygen.
What is haemoglobin?
A globular protein that binds to oxygen to transport it around the body and to respiring muscles.
What molecule is formed when haemoglobin combines with oxygen?
Oxyhaemoglobin
Describe the structure of haemoglobin?u
