Bio final exam Kaplan Slides 3 (LO 3 and 4) Flashcards
1
Q
Covalent bonds
A
-Electrons are shared
2
Q
Ionic bonds
A
-Atoms give up or gain electrons
3
Q
Hydrogen bonds
A
-Attraction between a partially negative end of one molecule with a partially positive end of a hydrogen
-Many = strength
4
Q
Cohesion
A
-water molecules stick together due to hydrogen bonding
5
Q
Surface tension
A
-Capacity of a substance to withstand being ruptured when placed under stress
6
Q
Adhesion
A
-Attraction between water molecules and other molecules
7
Q
Van der Waals forces
A
-Weak interactions between 2 or more close molecules due to changes in electron density
8
Q
Order of strength
A
-Ionic
-Covalent
-Hydrogen
-Hydrophobic
-Van der waals
9
Q
Building blocks of macro molecules
A
Sugar = carbohydrates
Fatty acids = lipids
Amino acids = proteins
Nucleotides = nucleic acids
