LEC 3 Flashcards
WATER AND PH
1
Q
What % of body does water make up?
A
60%
2
Q
Why is water important (5 points)?
A
- Universal solvent
- Liquid at room temp
- Can absorb and hold heat energy
- Evaporation uses heat energy
- Needed for important chem reactions
3
Q
Water
polar or non polar?
A
Polar
4
Q
What end of water is slightly positive
A
Hydrogen
5
Q
What end if water is slightly negative
A
Oxygen
6
Q
Does water have strong or weak hydrogen bonds?
A
Weak
7
Q
Polar solutes are hydro______
A
Hydrophilic
8
Q
Non-Polar solutes are hydro_______
A
Hydrophobic
9
Q
How does water cool body temperature?
A
- Loses excess heat via sweat
- Sweat evaporates and cools the body
10
Q
How does water heat up body temperature?
A
Absorbs large amounts of energy and generates heat during metabolic activities
11
Q
What are the two main reactions in the body?
A
- Hydrolysis
- Dehydration Synthesis
12
Q
Why is water being liquid at room temp a benefit? (3 points)
A
- Transports solutes throughout body
- Can temporarily break weak H+ bonds
- Main component in fluid filled spaces in the body ( intracellular, intercellular, organs)
13
Q
Hydrolysis Def
A
Breaking down macros
14
Q
Dehydration synthesis
A
Forming macros
15
Q
Most important ion in the body
A
Hydrogen
