Hesi A2 Biology
1. Hierarchic Orga- Kingdom
nizational sys- Phylum
tem for nomen- Class
clature Order
Family
Genus
Species (Least)
"Keep Penguins Cool Or Find Good Shelter"
2. Scientific Observation
Method Hypothesis
Experiment
Conclusion
3. Water All life, and therefore biology , occurs in water.
4. Properties of Wa- 2 Hydrogen bonds Covalently bonded to Oxygen.
ter
Hydrogen Bonding between molecules.
- High specific heat
- Large bodies or water stabilize climates
- Strong cohesive and adhesive properties
- Water freezes forms a lattice crystal resulting in ice
floating in water.
- Polarity of water allows it to act as a universal solvent.
- Water can be used to dissolve different solvents.
5. Carbohydrates Long chains, or polymers of sugar. Most importantly form
the backbone of DNA and RNA.
6. Saturated Clogs arteries. NO DOUBLE BONDS in their hydrocarbon
tail. SOLID @ room temperature.
7. Unsaturated Double bond in their hydrocarbon tail. LIQUID at room
temperature.
8. Phospholipids Phosphate group (polar) soluble in water. Hydrocarbon
tail of fatty acids is nonpolar and nonsoluble in water.
Ex. Cell Membrane
1. Hierarchic Orga- Kingdom
nizational sys- Phylum
tem for nomen- Class
clature Order
Family
Genus
Species (Least)
"Keep Penguins Cool Or Find Good Shelter"
2. Scientific Observation
Method Hypothesis
Experiment
Conclusion
3. Water All life, and therefore biology , occurs in water.
4. Properties of Wa- 2 Hydrogen bonds Covalently bonded to Oxygen.
ter
Hydrogen Bonding between molecules.
- High specific heat
- Large bodies or water stabilize climates
- Strong cohesive and adhesive properties
- Water freezes forms a lattice crystal resulting in ice
floating in water.
- Polarity of water allows it to act as a universal solvent.
- Water can be used to dissolve different solvents.
5. Carbohydrates Long chains, or polymers of sugar. Most importantly form
the backbone of DNA and RNA.
6. Saturated Clogs arteries. NO DOUBLE BONDS in their hydrocarbon
tail. SOLID @ room temperature.
7. Unsaturated Double bond in their hydrocarbon tail. LIQUID at room
temperature.
8. Phospholipids Phosphate group (polar) soluble in water. Hydrocarbon
tail of fatty acids is nonpolar and nonsoluble in water.
Ex. Cell Membrane
