3.4 Mass Transport in Animals Flashcards

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1
Q

What is meant by haemoglobin having a quaternary structure?

A

Multiple polypeptide chains

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2
Q

How many polypeptide chains are found in haemoglobin?

A

Four

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3
Q

What does each chain of haemoglobin have associated?

A

Haem group with Fe

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4
Q

What is meant by loading/associating?

A

When oxygen binds to haem groups

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5
Q

What is meant by unloading/dissociation?

A

When oxygen unbinds from haem groups

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6
Q

What is meant by the affinity of haemoglobin for oxygen?

A

How readily haemoglobin will bind with oxygen

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7
Q

What is meant by the saturation of haemoglobin?

A

How many binding sites are occupied by oxygen

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8
Q

Why is the dissociation curve of haemoglobin S shaped?

A

First oxygen binding changes tertiary structure of haemoglobin
Cooperative bonding

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9
Q

How does increased respiration effect the dissocation curve of haemoglobin?

A

Shifts to right
More carbon dioxide produced reduces blood pH
Reduces the affinity of haemoglobin for oxygen

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10
Q
A
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