Water (Leaving Cert Biology): Flashcards
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Practise the cards
13 cards from this deck
% water in human body mass
% water in human body mass
Approximately 60%
% water in plant mass
% water in plant mass
80-90%
% of human water outside cells
% of human water outside cells
About 33%
Why water as solvent is important
Why water as solvent is important
Enables reactions & transports molecules
pH water maintains in living organisms
pH water maintains in living organisms
Close to 7 (neutral)
Why neutral pH is critical
Why neutral pH is critical
Enzymes function optimally at this pH
Water's role in photosynthesis
Water's role in photosynthesis
Split to provide ions and electrons
Water's role in respiration
Water's role in respiration
Produced as end product
Water's role in digestion
Water's role in digestion
Breaks down complex food molecules
How water moves through membranes
How water moves through membranes
Freely/easily
Effect of cells gaining water
Effect of cells gaining water
Become swollen; maintain proper shape
Effect of cells losing water
Effect of cells losing water
Lose shape & function; plants wilt
Water's temp regulation property
Water's temp regulation property
Heats slowly, cools gradually