Water

beccy.booster
Mind Map by beccy.booster, updated more than 1 year ago
beccy.booster
Created by beccy.booster over 5 years ago
12
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Description

The formation of hydrogen bonds and properties of water that make it useful for living organisms
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Resource summary

Water
1 H bonds
1.1 O has partially -ve charge H had partially +ve charge
1.2 Not strong bonds + can only form with N, F and O
2 high latent heat of vaporisation / large amount of energy required to change from liquid to gas
2.1 evaporation is (efficient) cooling mechanism
2.1.1 E.g panting in dogs cools them
3 ice, is less dense than water / floats
3.1 (surface of) ice provides habitat for, organisms e.g. polar bears
4 high specific heat capacity / large amount of energy needed to, raise / change, temperature
4.1 (thermally) stable environment for, aquatic / named aquatic, organisms
4.1.1 (aquatic) organisms use less energy on temperature control
4.1.2 4 (internal) temperature of organisms changes only slowly
4.1.3 (biological) reactions / enzymes / metabolism, function(s) correctly
5 water (beneath ice), insulated / remains liquid / doesn’t freeze
5.1 (aquatic) organisms, do not freeze / can still swim
6 (effective) solvent
6.1 medium for reactions / (internal) transport medium / able to dilute toxic substances
7 cohesion / adhesion
7.1 allows formation transpiration stream / apoplast movement
8 surface tension
8.1 habitat for invertebrates e.g. pond striders
9 transparent so allows underwater photosynthesis
10 is high density so allows flotation/support
11 organisms can still obtain, oxygen/minerals/food/carbon dioxide from water
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