Urgent: Growing Bacteria

Ask questions about projects relating to: biology, biochemistry, genomics, microbiology, molecular biology, pharmacology/toxicology, zoology, human behavior, archeology, anthropology, political science, sociology, geology, environmental science, oceanography, seismology, weather, or atmosphere.

Moderators: MelissaB, kgudger, Ray Trent, Moderators

Urgent: Growing Bacteria

Postby angie_chalet » Tue Mar 11, 2014 1:27 pm

So my science fair project is "What cleaning product is the most effective in killing bacteria?" I rubbed a chopping board with a piece of raw chicken, left it overnight, and cleaned different sections of it with various cleaning products. I used sterilized swabs to swab the chopping board and rubbed them on pre-poured nurtient agar petri dishes (which i ordered online). At the moment they are being stored in a dark place at room temperature because I don't have an incubator. It's been 3 days and I see no results on my petri dishes, and the science fair is in 2 weeks (March 26) . How long will it take the bacteria to grow? Will it not grow if the petri dishes are not stored in an incubator? This is urgent. Thank you :cry:
angie_chalet
 
Posts: 2
Joined: Thu Apr 11, 2013 1:57 pm
Occupation: Student
Project Question: I want to do a science project using cornstarch and water. When you squeeze it, it's a solid but then turns to a liquid. It's also known as a non-newtonian fluid. My problem is that my teacher wants us to use the scientific method (problem/question, hypothesis, research, etc) for the science fair. I can't find a question/problem to use. Please help, I'm stuck on this and the science fair is close by.
Project Due Date: April 20th, 2013
Project Status: I am just starting

Re: Urgent: Growing Bacteria

Postby SciB » Thu Mar 13, 2014 10:45 am

Hi Angie,

Sorry to take so long getting back to you. Are you seeing any colonies now on the plates? E coli will grow at room temp but it can take as long as a week to see visible colonies depending on how cold your room is. If you have a big cardboard box, put a small lamp inside it with a thermometer and close the box. Check the temperature after an hour or so. If it is around 30C then you can wrap your plates in aluminum foil to keep out the light and put them in the box as a DIY incubator. The bacteria will grow much faster if they are warm.

Sybee
SciB
Expert
 
Posts: 537
Joined: Fri Feb 01, 2013 7:00 am
Occupation: Teacher
Project Question: I wish to join Scibuddies to participate in the Ask an Expert program.
Project Due Date: n/a
Project Status: Not applicable

Re: Urgent: Growing Bacteria

Postby dpututor » Thu Mar 13, 2014 12:11 pm

Good luck on your experiment! I hope you are beginning to see growth. If you haven't already, I would ask your school or even a neighboring school (perhaps a high school?) to see if you could use an incubator if they have one.

Lily
dpututor
Expert
 
Posts: 17
Joined: Thu Jan 23, 2014 2:09 pm
Occupation: Student
Project Question: I would like to become an Ask the Expert in order to become a part of this wonderful program!
Project Due Date: n/a
Project Status: Not applicable

Re: Urgent: Growing Bacteria

Postby Milley_09 » Sun Mar 23, 2014 8:21 pm

This is great information.
Milley_09
 
Posts: 2
Joined: Sun Mar 23, 2014 8:10 pm
Occupation: assistant dentist
Project Question: Regular dental care
Project Due Date: n/a
Project Status: Not applicable


Return to Grades 6-8: Life, Earth, and Social Sciences

Who is online

Users browsing this forum: Bing [Bot] and 1 guest