gas exchange and breathing Flashcards

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1
Q

what are unicellular organisms

A

they can rely on diffusion because they have a relatively large surface area compared to their volume

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2
Q

what are multicellular organisms

A

they need transportr systems in order to transport essentials like oxygen and glucose to every cell

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3
Q

what do multicellular organisms have

A

they have a small surface are to volume ratio and so diffusion would be slow to provide the necessary oxygen and glucose to every cell

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4
Q

what is ventilation

A

ventilation or breathing is the process by which air is constantly moved into and out of the lungs

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5
Q

what is inspiration or inhalation

A

is when air is forced into the alveoli because the pressure of the atmosphere is greater than the pressure inside the lungs

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6
Q
A
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