Chapter 3 Flashcards

1
Q

H2O

A

Most common substance found on earth

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2
Q

Properties of H2O

A
Liquid over broad range of temps 
Boils at 100 c & 212 f
Freezes at 0 c & 32 f
High specific heat
High latent heat of vaporization
High surface tension 
Polar solvent 
Good solvent
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3
Q

Functions of H2O

A
Transport medium - blood ~ 90% water 
Lymph 
Interstitial fluid - between cells
Intercellular fluid - inside cell
Solids gut, urine and sweat 

Temperature Regulator -
High specific heat - traps heat
High heat vaporization - releases heat

Lubricant - 
Joints - synovial fluid 
Muscles - glide past one another
Spinal column - cushion 
Eye

Cell turgidity and shape -
Needed for every cell
Moves freely across cell membrane
Moves in and out of cell due to osmotic pressure

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4
Q

Hydrolysis

A

Breakdown of water to H+ and OH-

Metabolism (most chemical reactions require

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5
Q

Water Requirements

A

Influenced by age, diet and environment

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6
Q

Body Heat production

A
Cell is a mini furnace 
Metabolism 
Digestion 
Fermentation
Muscle activity
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7
Q

Sources of H2O

A
Free liquid 
Water in feed - 
Silage - 60-70% 
Corn - 10-12%
Prairie Hay - 10-12% 
Metabolic - 
Produced by oxidation of nutrients (1 mole of glucose gives 6 moles of H2O 

Exception - desert animals and hibernation animals

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