Microorganisms are all around us, with an amazing diversity of adaptations. They were the first life on Earth, and their relatively recent discovery in extreme environments—like hot springs, ocean vents, and polar ice—illustrates how tenaciously they've evolved and survived. Microbiology gives us insights into evolution, disease, and even the mechanisms of our own cells. Explore our collection of microbiology projects to learn more about these tiny and amazing organisms.
Bacteria are powerful little creatures. They can dispose of contaminants, make us sick and did you know they can even generate electricity? In devices, called microbial fuel cells (MFC) they can extract electrons from their food sources such as organic materials and feed them into an electrical circuit to generate power. This way they can even turn plain soil into a source of energy! Does it matter though what kind of food the bacteria "eat"? Find out how bacteria grow in a microbial fuel cell…
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MicroBio_p032
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Time Required
Very Long (1+ months)
Prerequisites
Previous experience using a multimeter and familiarity with the physics of electricity is helpful, but not required. A basic knowledge of how to work with bacteria is also recommended to complete this science fair project. Consult the [# ProjectGuide Name="Advanced.MicrobiologyTechniquesampTroubleshooting" Value="HtmlAnchor" HtmlText="Microbiology Techniques and Troubleshooting" #] guide for information on how to conduct microbiology experiments.
Material Availability
The needs to be special ordered from our partner
.
Cost
Average ($50 - $100)
Safety
Be sure to wear the gloves supplied with the kit when handling the microbial fuel cell's electrodes (its cathode and anode). The electrodes are made of a conductive material called graphite fiber and should not be placed near electronics or power plugs, or have their fibers dispersed in the air. Use sterile technique when growing the bacteria. Read the before starting any experiments. may be necessary. Adult supervision is recommended.
Have you heard that garlic powder is supposed to inhibit the growth of bacteria? Which do you think would make a better disinfectant: a solution of garlic powder or a solution of bleach? This project shows you a straightforward way to compare the effectiveness of different disinfectants (or other antimicrobial agents), by measuring zones of inhibition on a culture plate.
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MicroBio_p014
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Time Required
Average (6-10 days)
Prerequisites
To do this project, you will need access to a laboratory with facilities for culturing bacteria. You should be familiar with sterile technique and proper handling of bacterial cultures.
Material Availability
Specialty items
Cost
Average ($50 - $100)
Safety
Standard precautions for handling bacterial cultures and bleach.
This is a straightforward project on glucose metabolism in yeast. You'll grow yeast under aerobic and anaerobic conditions and measure carbon dioxide output to assess metabolic efficiency.
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Ultraviolet light can damage DNA molecules. If a cell's DNA repair mechanisms can't keep up with the damage, mutations are the result. As harmful mutations accumulate, the cell eventually dies. How much ultraviolet light is too much for a bacterial cell?
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MicroBio_p017
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Time Required
Average (6-10 days)
Prerequisites
To do this project, you will need access to a laboratory with facilities for culturing bacteria. You should be familiar with sterile technique and proper handling of bacterial cultures.
Material Availability
Specialty items
Cost
Average ($50 - $100)
Safety
Adult supervision required. Read and follow the safety note below on ultraviolet light. Follow standard precautions for handling bacterial cultures.
Disinfectants are products that kill harmful bacteria that inhabit surfaces. Disinfectants can be in household and personal cleaning products. Which products work best? Compare different household cleaning products, like bleach or Lysol, to see which ones kill the most bacteria. Compare different brands of antibacterial hand soap or dish soap to see which brand is the most effective. How do hand sanitizers work? Compare rub-on hand sanitizers to see if they work better than alcohol, or compare…
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MicroBio_p020
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Time Required
Average (6-10 days)
Prerequisites
Knowledge about growing and testing bacteria
Material Availability
Specialty items, like bacteria and the media to grow them on, can be ordered from such as .
Cost
Low ($20 - $50)
Safety
Follow all safety warnings printed on the cleaning solutions you are using. Read the before starting any experiments. Adult supervision is recommended. may be necessary.
Have you ever wondered if a piece of jewelry is real gold or if it's just some ordinary metal alloy? It turns out that some metals have a unique property; even in small amounts, they can be toxic to some organisms, including algae, molds, fungi, and bacteria, although it often takes many hours to see an effect. Can this phenomena, called the oligodynamic effect be used to tell whether or not the gold or silver in a piece of jewelry is real? Do bacteria react differently to pure, plated, and…
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MicroBio_p026
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Time Required
Long (2-4 weeks)
Prerequisites
None
Material Availability
This science fair project requires access to some laboratory equipment, such as a 37°C incubator, a Bunsen burner, as well as some specialty reagents, which can be ordered online. It also requires several pieces of jewelry, including at least one 14-karat gold piece. See the Materials and Equipment list for more details.
Cost
Average ($50 - $100)
Safety
This science fair project involves the use of the bacterium E. coli. Standard microbiology and bacterial safety guidelines should be followed. See the for more details. Projects using bacteria may require pre-approval from your science fair's . To maintain a sterile environment, you will be working near a lighted Bunsen burner. Keep all flammables, including hair and clothing, away from the flame.
Have you ever thought about how fortunate you are to have safe and clean water coming out of your faucet? Many people in undeveloped nations don't have this luxury. But does that mean they can't have clean water at all? Is there an inexpensive way they could use to make their own clean water? In this microbiology science fair project, you will investigate whether or not sunlight can disinfect contaminated water.
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MicroBio_p025
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Time Required
Long (2-4 weeks)
Prerequisites
You should have access to a local stream or creek.
Material Availability
Specialty items are required. You will need to purchase tryptic soy agar plates, droppers, and glass rods for streaking. See the Materials and Equipment section, below, for more details.
Cost
Average ($50 - $100)
Safety
This science fair project deals with potentially dangerous pathogens. Wear gloves when conducting the experiment. Read and follow the instructions in the . Do not drink any of the water that results from the SODIS process. See the Experimental Procedure for more information. You should always exercise caution when obtaining a water sample from a creek or a stream.
The Pilobolus fungus has an interesting way of making sure the next generation has a good start on life. At high speed, the fungus shoots a sac that contains spores toward a light source. Why toward a light source? Because that is where it is most likely to find an open area with grass. Once the spore is placed on grass, it is eaten by a cow or a horse, which is a critical step in its life cycle. The spore passes through the animal's digestive track and ends up in a pile of manure. For a fungal…
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MicroBio_p027
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Time Required
Long (2-4 weeks)
Prerequisites
Note:Pilobolus is grown on rabbit dung embedded in plain agar. A strong stomach is a prerequisite for working with this culture.
Material Availability
You will need to order a Pilobolus culture kit online. See the Materials and Equipment list for details. You should work with your teacher to have the kit delivered to your teacher at school, since there are restrictions on sending it to a residential address.
Have you ever heard that nanoparticles can kill bacteria? You may have even seen some consumer products advertise that they contain antibacterial nanoparticles. A nanometer is one billionth of a meter long. Nanoparticles are usually just a few nanometers in diameter — really, really tiny! So how can something that small kill bacteria which are approximately 700 - 1400 nanometers across? Are they really effective? In this science project you will grow some E. coli bacteria and…
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MicroBio_p031
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Time Required
Average (6-10 days)
Prerequisites
You should be familiar with sterile technique and proper handling of bacterial cultures. If you have questions or need a refresher please consult the [# ProjectGuide Name="Advanced.MicrobiologyTechniquesampTroubleshooting" Value="HtmlAnchor" #] guide
Material Availability
Some materials need to be special ordered; see the Materials and Equipment list for details
Cost
High ($100 - $150)
Safety
You must follow general safety precautions for handling microorganisms. See the for details.
Have you ever wondered where acne comes from and how you can treat it? One major cause of acne is the colonization and infection of clogged pores with bacteria. In this science project, you'll test different acne medications and treatments to determine their effectiveness at killing bacteria.
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MicroBio_p019
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Time Required
Long (2-4 weeks)
Prerequisites
None
Material Availability
This science project requires access to some laboratory equipment, such as a 37°C incubator, as well as some specialty reagents, which can be ordered online. See the Materials and Equipment list for more details.
Cost
High ($100 - $150)
Safety
This science project involves the use of the bacterium E. coli. Standard microbiology and bacterial safety guidelines should be followed, see the for more details. To maintain a sterile environment, you will be working near a lighted Bunsen burner. Keep all flammables, including hair and clothing, away from the flame.
