The Role of Water in Living Organisms with reference to Hydrogen Bonding (essay)

Be warned- this is an essay so you'll have to sift through the information; however, it is pretty concise and did get me an A, so :)

HideShow resource information

Pages in this set

Page 1

Preview of page 1
Name: Lucy Walters, 13MMU

The Roles of Water in and Around Living Organisms with Reference to
Hydrogen Bonding

An introduction to hydrogen bonding.
Water's role in animals, including hydrolysis in the stomach, its use as a solvent (e.g. in blood
plasma), organ material, regulation of temperature, cushioning of organs/tissues.…

Page 2

Preview of page 2
Name: Lucy Walters, 13MMU

Water in Animals
The energy required to break multiple hydrogen bonds causes water to have a high heat of vaporization;
this is invaluable in the homeostasis and temperature regulation of animals, since the evaporation of
sweat utilizes large amounts of heat. Water is also an invaluable…

Page 3

Preview of page 3
Name: Lucy Walters, 13MMU

cells together. This gives cells a higher viscosity that helps increase the efficiency of proteins and
In a dehydrated cell, the metabolism is greatly impaired. Dehydration profoundly effects the movement
of lymph through the body and causes the lymph system to clog up and malfunction.…

Page 4

Preview of page 4
Name: Lucy Walters, 13MMU

extremely suitable fluid medium for dissolved carbon dioxide and proteins in blood plasma (blood is 92%

Its fluidity is also central in the cushioning of vital organs and joints; numerous chronic and painful
conditions, including arthritis and fibromyalgia, can often be significantly reduced after adequate…

Page 5

Preview of page 5
Name: Lucy Walters, 13MMU

Water in Plants
Possibly the most important application of water in plants is in the conversion of light energy into
chemical energy during photosynthesis, in which water is one of the crucial reactants:

Water + Carbon dioxide Oxygen + Glucose
6H2O + 6CO2 6O2 + C6H12O6…

Page 6

Preview of page 6
Name: Lucy Walters, 13MMU

Maintaining plant temperature; the evaporation of water from the spongy mesophyll layer of
the leaves draws on heat energy, which helps to keep the plant cool.

The creation of a `water column'; this means that water can be used as a fluid vector for
dissolved solutes.…

Page 7

Preview of page 7
Name: Lucy Walters, 13MMU

The hydrogen bonds that form between water molecules account for some of the essential -- and
unique -- properties of water.

The attraction created by hydrogen bonds keeps water liquid over a wider range of
temperature than is found for any other molecule its size.

Page 8

Preview of page 8
Name: Lucy Walters, 13MMU

blowing over these currents. The Gulf Stream and its northern extension towards Europe, the North
Atlantic Drift, for example, warms the atmosphere of the British Isles and north-western Europe, and the
cold water currents contribute to heavy fog off the coast of eastern Canada (the Grand…


No comments have yet been made

Similar Biology resources:

See all Biology resources »