Gaseous exchange quiz

The Bohr effect shifts the curve of O2 to the [blank_start]left[blank_end].

The lungs ahve a large surface area to increase the rate of diffusion. Select anyother properties it has to do so

Foetal haemoglobin curves are shifted to the right.

The primary structure of Haemoglobin is the [blank_start]sequence of amino acids[blank_end]. The secondary structure is when it folds to [blank_start]form an alpha helix[blank_end]. The tertiary structure is when it folds even more. The quaternary structure is when there is [blank_start]more than one polypeptide chain[blank_end]. The iron is a [blank_start]prosthetic group[blank_end] to the protien.

How many polypeptide chains is haemoglobin made of

Label this diagram with the appropriate volumes. The Y axis is lung volume in litres and the X axis doesn't matter for this question.

During inspiration the [blank_start]external intercostal[blank_end] muscles, [blank_start]contract[blank_end] bringing the ribcage up and outwards. The diaphragm contracts moving [blank_start]down[blank_end]. This [blank_start]increases[blank_end] the thoraic cavity's volume and the lungs expand. This decreases the presure inside the lungs. The air therefore moves [blank_start]into[blank_end] the lungs.

During inspiration the [blank_start]external[blank_end] intercostal muscles, [blank_start]contract[blank_end] bringing the ribcage [blank_start]up and outwards[blank_end]. The diaphragm [blank_start]contracts[blank_end] moving [blank_start]down[blank_end]. This [blank_start]increases[blank_end] the thoraic cavity's volume and the lungs [blank_start]expand[blank_end]. This [blank_start]decreases[blank_end] the presure inside the lungs. The air therefore moves [blank_start]into[blank_end] the lungs.