The Molecule of Life

7/24/2019 The Molecule of Life

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OUR MOST

PRECIOUSRESOURCE

WAT ER

Sandra KnechtAlyson Roth

Kiana Dumas


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T H E F O U N D AT I O N


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L O R E N E I S E L E Y,T H E I M M E N S E J O U R N E Y ( 1 9 5 7 )

Its substance reaches everywhere; it touches thepast and prepares the future; it moves under the

poles and wanders thinly in the heights of air. It can

assume forms of exquisite perfection in a snowflake,

or strip the living to a single shining bone cast up by

the seaIf there is magic on this planet, it is

contained in water.


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H 2 O I S A U N I Q U E M O L E C U L E W I T H S O M EA M A Z I N G P R O P E R T I E S


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Molecular Structure of H2O


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H - B O N D S A N D P O L A R I T Y


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C O H E S I O N

Water molecules

are attracted to

each other


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A D H E S I O N

Water

molecules are

attracted to

other

substances


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C A P I L L A R Y

A C T I O N

Capillary action

allows liquid to flow

upward


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3 P H Y S I C A L S TAT E S O F H 2 O


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I C E I S L E S S D E N S E T H A N W AT E R


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H I G H S P E C I F I C

H E AT A N D

T E M P E R A T U R E

R E G U L A T I O N


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E X PA N D I N G T H E C O N C E P T


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H 2 O

The most abundant

compound on the planet

Composes 60-70% of

human body

Essential for all living

organisms

You can survive less than a

week without it


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T H E U N I Q U E C H E M I C A L A N D P H Y S I C A L

P R O P E R T I E S O F W AT E R M A K E I T E S S E N T I A L

F O R L I F E


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N O W AT E R =

N O C E L L S

Osmosis

Fluid homeostasis

Chemical cellular reactions

Transportation of oxygen

and waste

Sustains cellular structure


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T H E R O L E O F

W AT E R I N T I S S U E S

A N D O R G A N S

All body tissues contain water in

different amounts

Kidney regulates water and

waste removal

Heart directly affected by water

intake - blood pressure and

blood volume

Water intake affect cognitive

functions


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T H E B I G P I C T U R E


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Water -

the simplest substance

vital to our survival


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water > plants > animals


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Water is removed

from the

body in many ways.

Keep yourself

hydrated!!!


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W AT E R I S A F I N I T E R E S O U R C E


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Most freshwater is stored in inaccessible places


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Rivers and lakes make up 1% of all freshwater.


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Population Distribution


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Water consumption has doubled

over the last decade


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W AT E R A N D D I S E A S E

21 of 37 primary

diseases in

developing

countries are related

to water andsanitation

Inadequate water

causes health

problems for 1.2

billion people

worldwide


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Converting salt water to drinking water is extremely

expensive


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Evett J, Khler K. Water conservation. Salem Press Encyclopedia [serial on the Internet]. (2015,January), [cited September 23, 2015]; Available from: Research Starters.

Jquier E, Constant F. Water as an essential nutrient: the physiological basis of hydration.

European Journal Of Clinical Nutrition [serial on the Internet]. (2010, Feb), [cited

September 23, 2015]; 64(2): 115-123. Available from: Academic Search Complete.

Pimentel D, Berger B, Filiberto D, Newton M, Wolfe B, Karabinakis E, Clark S, Poon E, Abbett

E, Nandagopal S. 2004. Water resources: Agricultural and environmental issues.

BioScience 54: 909918.

Sivakumar B. Water crisis: From conflict to cooperation-an overview. Hydrological Sciences

Journal/Journal Des Sciences Hydrologiques [serial on the Internet]. (2011, June), [citedSeptember 23, 2015]; 56(4): 531-552. Available from: Academic Search Complete.

Srinivasan V, Lambin E, Gorelick S, Thompson B, Rozelle S. The nature and causes of the global

water crisis: Syndromes from a meta-analysis of coupled human-water studies. Water

Resources Research [serial on the Internet]. (n.d.), [cited September 23, 2015];

48Available from: Science Citation Index.

Works Cited

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The Molecule of Life

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