WebMicrobiology (biology only) Teachers’ notes . Required practical activity Apparatus and techniques Investigate the effect of antiseptics or antibiotics on bacterial growth using … WebFeb 15, 2024 · Place some sterile culture medium in a cuvette and use this as a blank in the colorimeter to zero the device each time. Keep this source of sterile culture in a fridge between tests; Then to take the initial absorbance take a 3cm3 sample of the bacterial culture and place in a cuvette; Then measure the turbidity of the sample
Bacterial Colony Morphology, Characteristics & Examples
WebThe different types of microbial techniques include: Staining Techniques: used to visualize and identify microorganisms, such as gram staining and acid-fast staining. Isolation Techniques: used to separate microorganisms from a mixture, such as streak plate method and serial dilution. Culture Techniques: used to grow and maintain microorganisms ... WebMicrobiology (biology only) Teachers’ notes . Required practical activity Apparatus and techniques Investigate the effect of antiseptics or antibiotics on bacterial growth using agar plates and measuring zones of inhibition. AT 1, AT 3, AT 4, AT 8 . Investigating the effect of antiseptics on the growth of bacteria . Materials how to scan document through notes on iphone
Edexcel A-level biology Topic 6 - Microbiology and Pathogens
WebAseptic techniques include disinfecting work surfaces, using a bunsen burner and flaming bottleneck of bacterial samples. The stages of microbial growth involve the lag phase, … WebHand washing is 99.9% effective at decontaminating us from bacteria that might reside on the skin. Therefore, when the proper safety precautions are taken, colonies of microorganisms can be safely isolated from homes, yards, gardens, etc. The majority of microorganisms are non-pathogenic, but bacterial cultures or petri plates that contain … Webculture flask with non-absorbent cotton wool, autoclaving of equipment and culture flask) is carried out. Plan the timing of this practical activity carefully, especially if students will be using a colorimeter. A single culture flask should be set up for the whole class and inoculated with yeast during the task introduction. Incubate at how to scan document to computer desktop