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How is the structure of a red blood adapted to its function?

Red blood cells are shaped like a biconcave disc - increases SA:volume ration -> increase surface for oxygen to diffuse in and out of cell Red blood cells are very small - 7um, compared with 40um average ...
NB
Answered by Norbert B. • Biology tutor
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Describe how the origin of living systems is explained by natural processes. Please provide supporting evidence for hypotheses.

Numerous experimental investigations have been conducted to explain the diversity and unity of life. Specifically, these models have aimed to provide evidence that the conditions of early Earth provided an e...
RS
Answered by Ruth S. • Biology tutor
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What is the sliding filament mechanism?

The sliding filament mechanism is a model used to show the way in which muscles contract. It involved 3 components - Myosin, Actin and Tropomyosin. Myosin has a head like projection to which an ADP molecule ...
JC
Answered by Joseph C. • Biology tutor
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How do you explain the change in membrane permeability as temperature increases?

Generally, increasing the temperature increases membrane permeability. At temperatures below 0 o C the phospholipids in the membrane don't have much energy and so they can't move much, which means that they'...
EF
Answered by Ella F. • Biology tutor
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Describe the course taken by a deoxygenated red blood cell returning to the heart from the circulation, naming any vessels or chambers along its course.

Following its return to the right atrium via the vena cava, the RBC passes through the mitral valve and into the right ventricle. Upon ventricular contraction, the RBC is ejected via the pulmonary valve and ...
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Answered by William B. • Biology tutor
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