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Measure Microbes' Growth Science Projects (18 results)

Learn how to measure microbial growth--collecting accurate data about organisms that as individuals you need a microscope to see. Measure the size of a colony, number of colonies, or even what the organisms produce.

Yeasty Beasties
Science Fair Project Idea
Scientific Method
While looking at a package of dry yeast it is hard to believe that the package has organisms in it that are alive. But add the right ingredients and presto, the mixture becomes a bubbly, oozing, mess of life! What are the right ingredients? What does that yeast need to become active? Do this science project and figure it out for yourself! Read more
Measuring Antimicrobial Effectiveness with Zones of Inhibition
Science Fair Project Idea
Scientific Method
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. Read more
Yeast Reproduction in Sugar Substitutes
Science Fair Project Idea
Scientific Method
There is nothing quite like the smell of fresh-baked bread to make your mouth water! As any baker can tell you, you cannot bake bread without yeast. Yeast actually eat sugar so that they can reproduce and make more yeast, and make bread dough rise. But can they use sugar substitutes to do this? In this science project you will get to investigate how well yeast grow with sugar substitutes as a food source. Pass the butter, please! Read more
Do Different Dilutions of Disinfectants Affect the Development of Bacterial Resistance?
Science Fair Project Idea
Scientific Method
This is a project that illustrates the process of natural selection in action. You'll need access to a laboratory for working with the bacterial cultures used in this project. Read more
How Do Bacteria Produce Power in a Microbial Fuel Cell?
Science Fair Project Idea
Scientific Method
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… Read more
Learn How to Disinfect Contaminated Water
Science Fair Project Idea
Scientific Method
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. Read more
An Aerobic Exercise: Yeast Metabolism with and without Aeration
Science Fair Project Idea
Scientific Method
This is a straightforward project on glucose metabolism in yeast. You will grow yeast under aerobic and anaerobic conditions and measure carbon dioxide output to assess metabolic efficiency. Read more
Which Acne Medication Can Really Zap That Zit?
Science Fair Project Idea
Scientific Method
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. Read more
Is the Gold in My Jewelry Real?
Science Fair Project Idea
Scientific Method
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… Read more
Death Rays: What Duration of Ultraviolet Exposure Kills Bacteria?
Science Fair Project Idea
Scientific Method
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? Read more
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