BIOS242 Week 1 Lab 1 done

.docx

School

Chamberlain College of Nursing *

*We aren’t endorsed by this school

Course

BIO242

Subject

Mechanical Engineering

Date

Apr 3, 2024

Type

docx

Pages

5

Uploaded by BailiffGazelle3362

Report
BIOS242 Lab 1 Name: Lab 1: Importance of Handwashing Learning Objectives: Explain effectiveness of hand washing GI infections occur due to contaminated food and water. Clean drinking water, washed produce, appropriate storage of food and simple personal hygiene habits such as hand washing help tremendously in reducing the incident of GI infections. In this lab, we will test the effectiveness of some of these practices. Note: Use personal protective equipment (PPE) at all times. Follow instructions at all times. After overnight growth, seal the plates with parafilm. Do not open the plates. Exercise 1: Personal Hygiene- Importance of Hand washing Materials: Nutrient agar, ruler, marker, hand soap, paper towel Method: 1. Obtain a nutrient agar plate. 2. Use a marker and a ruler to divide the back of the agar plate in half. Mark each half as “Before Washing” and “After Washing”. 3. Slightly open the “Before Washing” section of the plate and without washing your hands, gently touch your index finger on the agar plate for approximately 3 seconds. a. Do not press too hard to disturb the agar b. Gently touch your finger to agar; there is no need to press. 4. Wash your hands thoroughly with soap and water. 5. Gently blot dry your hands using paper towel. 6. Slightly open the “After Washing” section of the plate and gently touch your index finger on the agar plate for approximately 3 seconds. 7. Keep the plates in incubator at 37 C for 24 hours. 8. During the next lab meeting, count the colonies grown in each of the sections of your plate. If it is more than 100 colonies, write TNTC (Too numerous to count) in the report. 9. Write your observations in Lab report. 10. Once observation is completed, immediately put the plates in appropriate waste container for autoclaving. 1
BIOS242 Lab 1 Name: Lab Report: Purpose: The purpose of this lab is to see germs before and after handwashing. With this experiment we can see why it is important to wash hand to prevent growth and spread of bacteria. Exercise 1: Personal Hygiene- Importance of Hand washing Draw your observations of bacterial growth: 2
BIOS242 Lab 1 Name: 3
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help