biological molecules, properties of water

Question 1

name all properties

Answer 1

solvent
cohesion
specific heat capacity
latent heat of vaporisation
latent heat of fusion
density

Question 2

solvent

Answer 2

polar molecules dissolve in water.
positive and negative ions are kept seperate from one another
once seperate they can move around and react with other molecules
this is why most metabolic reactions take place in teh cytoplasm

Question 3

density

Answer 3

its density changes at different temperatures
becoms an insulator for aquatic habitats which stops the organism from freezing in the water

Question 4

cohesion

Answer 4

useful in transport because it sticks to thegether
water can travel as a continuous column which drags dissolved substances along with it

Question 5

specific heat capacity

Answer 5

amount of energy required to raise the temperature by 1 degree
provides a good habitat with stable conditions

Question 6

latent heat of vaporisation

Answer 6

amoount of energy needed to change a liquid into a gas
the energy needded to evaporate water is taken from the organsim which cools down the organism

Question 7

latent heat of fusion

Answer 7

loss of energy for water to cool down
the organisms wont freeze often