Science

• Pressure


  The force exerted by the gas on the walls of its container divided by the surface area of the container
• Common units of pressure

  • Atmosphere (atm)
  • Torr
  • Millimeter mercury (mm Hg)
• Pascal (Pa)


  Standard unit of pressure
• Volume


  The space occupied
• Common units of volume

  • Cubic meter (m3)
  • Cubic centimeter (cm3)
  • Liter (L)
  • Milliliter (mL)
• Temperature


  The degree of hotness and coldness
• Units of temperature

  • Degree Celsius
  • Degree Fahrenheit
  • Kelvin
• The standard temperature is 0 degree Celsius or 273.15K and the standard pressure is 1 atm pressure
• At STP, one mole of gas occupies 22.4 L of volume
• Mass


  The amount of gas
• Boyle's Law


  The pressure-volume relationship at constant temperature, where pressure and volume are inversely proportional
• Charles' Law


  The volume-temperature relationship at constant pressure, where volume and temperature are directly proportional
• Biomolecules


  Any molecule that is produced by a living organism
• Major categories of biomolecules

  • Carbohydrates
  • Lipids
  • Proteins
  • Nucleic acids
• Carbohydrates


  Molecules made from aldehydes and ketones containing hydroxyl groups
• Lipids


  Water insoluble molecules composed of carbon, hydrogen and oxygen, including fats and oils
• Proteins


  Polymers of amino acids
• Nucleic acids


  DNA and RNA, which are polymers made up of nucleotides composed of a five-carbon sugar, a nitrogen-containing base, and a phosphate group