10. Water

Question 1

dry body weight in %

Answer 1

40%

Question 2

% of water in the body

Answer 2

60%

Question 3

intracellular %

Answer 3

40% (2/3 of water)

Question 4

extracellular in %

Answer 4

20% (1/3)
15% interstitial
5% plasma

Question 5

predominant chemical component of living organisms

Answer 5

water

Question 6

a molecule with electrical charge distributed asymmetrically about its structure

Answer 6

dipole

Question 7

on average , each molecule in water associates through hydrogen bonds with ___

Answer 7

3.5 others

Question 8

characteristics of a molecule with:

•hydrogen atom attache to S,O,N

Answer 8

• polar
• hydrophilic
• can now form hydrogen bonds

Question 9

•molecules that to not contain Hydrogen atoms attached to S,O,N , characteristics

Answer 9

• non-polar

* hydrophilic

Question 10

this character of water enables it to dec the force of attraction between charged and polar species , making it an excellent solvent

Answer 10

high dielectric constant

Question 11

this character of wate allows it to cleave Amide, Glycoside and Ester bonds that holds BIOPOLYMERS together

Answer 11

excellent nucleophile

Question 12

water acts as both acid and base

Answer 12

amphoteric

Question 13

A molecule with hydrophilic and hydrophobic part

Answer 13

amphipathic