3.4.11- Mass transport end of topic test Flashcards
What type of ion makes hemoglobin red?
Iron ion
The pO2 determines the what of haemoglobin to O2?
Affinity
What is the general shape of the dissociation curve?
S shaped
What is the name given to the effect that states that ‘the partial pressure of carbon dioxide (pCO2) also influences the affinity of haemoglobin for oxygen?
Bohr
Which of these blood vessels carry oxygenated blood?
Pulmonary vein
Renal artery
What happens to the atrioventricular valves when the ventricles start to contract?
They shut
Into which chamber of the heart does deoxygenated blood from the body flow?
Right atrium
What is the function of veins, and how are they specialised to perform this role?
Veins transport blood back to the
heart
heart.
The lumen of veins is wider than the
artery
arteries which allows the blood to flow at low pressure.
There is a thin
muscle
muscle wall and elastic tissue in the vein walls.
Valves are located throughout the veins to ensure blood flows towards the heart.
How many cells thick is a capillary wall?
1 cell thick
Which ventricle wall will be seen to be thickest when performing a heart dissection?
left
What waterproof polymer lines the walls of the xylem?
Lignin
What happens to water in the leaves of a plant?
It evaporates by transpiration
Used in photosynthesis
In what plant structure would you find sieve plates?
Phloem
Where in the plant is sucrose produced?
Leaves
What experiments provide evidence for the mass flow theory?
Tracing
Ringing
