Biomolecules: The Chemicals of Life (LC 2027) (Leaving Cert Biology): Flashcards
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% of water in human body mass
% of water in human body mass
60%
% of water in plant mass
% of water in plant mass
80-90%
What main components does water form in organisms?
What main components does water form in organisms?
Cytoplasm and body fluids
% of human water outside cells
% of human water outside cells
33%
Water's key property for dissolving molecules
Water's key property for dissolving molecules
Good solvent
pH level water maintains in organisms
pH level water maintains in organisms
Close to 7 (neutral)
Why is neutral pH important for cells?
Why is neutral pH important for cells?
Optimal for enzyme function
Water's role in photosynthesis
Water's role in photosynthesis
Split to provide H+ 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
Effect of water loss on cells
Effect of water loss on cells
Cells shrivel and lose shape/function
Effect of water gain on cells
Effect of water gain on cells
Cells become swollen, maintain shape
Water's temperature regulation property
Water's temperature regulation property
Heats up slowly, cools down gradually