osmoregulation Flashcards

1
Q

define osmoregulation

A

the regulation of water and salts outside the cells

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2
Q

define osmolytes- refer to turgidity

A

regulators of turgidity in cells

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3
Q

define osmoconformer- refer to marine organisms

A

internal conditions are similar to external- takes less energy to keep them constant

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4
Q

what is the salinity of marine environments?

A

3.5%

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5
Q

what kind of urine does hypotonic regulation produce?

A

when urine has a lower ion concentration than surroundings

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6
Q

what kind of urine does hypertonic regulation produce?

A

when urine has a higher ion concentration than surroundings

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7
Q

does chloride follow other ions passively?

A

YES

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8
Q

what is meant by a bipolar cell membrane

A

two layers with differing channels

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9
Q

which way does the BASAL layer of the membrane face?

A

inward

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10
Q

which way does the APICAL layer of the membrane face?

A

outward

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