Haemoglobin (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is haemoglobin specialised for?
What is haemoglobin specialised for?
Transporting oxygen
How many polypeptide chains link together in haemoglobin's quaternary structure?
How many polypeptide chains link together in haemoglobin's quaternary structure?
Four
How many molecules can one haemoglobin molecule transport in humans?
How many molecules can one haemoglobin molecule transport in humans?
Four
What shape does each polypeptide chain coil into during secondary structure formation?
What shape does each polypeptide chain coil into during secondary structure formation?
Helix
Where does oxygen loading primarily occur in humans?
Where does oxygen loading primarily occur in humans?
In the lungs
What characterises molecules with high affinity for oxygen?
What characterises molecules with high affinity for oxygen?
Readily take up , release it less easily
What conditions at gas exchange surfaces cause haemoglobin to have high affinity?
What conditions at gas exchange surfaces cause haemoglobin to have high affinity?
High , low
How does carbon dioxide affect haemoglobin's affinity for oxygen?
How does carbon dioxide affect haemoglobin's affinity for oxygen?
Causes shape changes, reducing affinity
Why do different organisms have haemoglobin with varying oxygen affinities?
Why do different organisms have haemoglobin with varying oxygen affinities?
Different amino acid sequences
Why is tertiary structure essential in haemoglobin?
Why is tertiary structure essential in haemoglobin?
For effective oxygen binding ability