My notes

• Disinfectants


  Used on surfaces
• Antiseptics


  Used on living tissue
• Difference between disinfectants and antiseptics

  Disinfectants are used on surfaces, antiseptics are used on living tissue
• Hydrogen peroxide


  • Catalase test
• To distinguish Staphylococcus from Streptococcus other than by morphology, you can use a hydrogen peroxide, catalase test
• Group A and Group B Streptococci cannot be distinguished by a gram stain because they are both gram positive cocci
• Sterilize


  Kills everything
• Disinfect


  Destroys negative state
• Staphylococcus


  • Gram positive, cocci, catalase positive, cluster
• To prevent refracting and keep the light from refracting, oil immersion is used when using the 100X objective in a compound microscope
• Filtration is used to sterilize a media that is heat sensitive
• Magnification is calculated by multiplying the ocular lens by the objective lens
• Hormones are chemical messengers that regulate various physiological processes throughout the body.