Chapter 3 Flashcards
1
Q
H2O
A
Most common substance found on earth
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
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
4
Q
Hydrolysis
A
Breakdown of water to H+ and OH-
Metabolism (most chemical reactions require
5
Q
Water Requirements
A
Influenced by age, diet and environment
6
Q
Body Heat production
A
Cell is a mini furnace Metabolism Digestion Fermentation Muscle activity
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
