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Marine Toxicology > harmful effects of radiation > Flashcards

harmful effects of radiation Flashcards

1
Q

penetration of UVb in water

A

20-30 m

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2
Q

products of oxidative stress

A

hydrogen peroxide

-OH

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3
Q

what part of the photosynthetic apparatus gets damaged

A

photosystem II

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4
Q

regulates membrane fluidity in low temperatures

A

PUFA polyunsaturated fatty acids

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5
Q

photomodification

A

formation of new compounds that exhibit greater toxicity than the parent toxicant

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6
Q

phototoxic compounds

A

pesticides
herbicides
antifouling agents

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7
Q

how do macroalgae cope with UV radiation

A 
vertical migration
multiple-layered cell wall
absorbing screening compounds
protective mechanisms
proteins and repairing enzymes
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8
Q

effects of UV on macrophytes

A 
decreased nutritional quality
unhealthy progeny
damage to photosynthetic apparatus
oxidative stress
DNA damage
stunted growth
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Marine Toxicology (7 decks)

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