How to Formulate an Effective Research Hypothesis

As best as the current science can answer it, no, milk doesn’t make you grow taller, simply because, well, nothing can make you grow taller. But milk can be a useful tool to help kids grow to their potential height.

In a formalized hypothesis, a tentative relationship is stated. For example, if the frequency of winning is related to frequency of buying lottery tickets. The ultimate value of a formalized hypothesis is it forces us to think about what results we should look for in an experiment.

• State the problem that you are trying to solve. Make sure that the hypothesis clearly defines the topic and the focus of the experiment.
• Try to write the hypothesis as an if-then statement.
• Define the variables.

Bacterial growth may be affected by temperature. Rewritten hypothesis: Ifthe temperature is increased, thenbacteria will grow faster becausethose little buggers like it hot!

Bacteria can live in hotter and colder temperatures than humans, but they do best in a warm, moist, protein-rich environment that is pH neutral or low acid. There are exceptions: some bacteria thrive in extreme heat or cold. some can survive under highly acidic or extremely salty conditions.

The area where you rest your hand on your desk has, on average, 10 million bacteria.

Gelatin plates are able to grow various types of fungi as well as some bacteria. If you choose to grow organisms on the gelatin that can use it as a nutrient source, the gelatin will assume a more liquid consistency after the organisms break it down.

We can collect and grow them in specially prepared dishes. The sugared gelatin is an excellent medium for supplying bacteria with nutrients and an environment in which we can see them grow. CAUTION: Most bacteria collected in the environment will not be harmful.

All you need are some petri dishes, agar, and sterile swabs or an inoculating needle. Agar is a gelatinous medium that provides nutrients and a stable, controlled environment for bacteria growth (agar solution).

What bacteria need to grow and multiply

• Food (nutrients)
• Water (moisture)
• Proper temperature.
• Time.
• Air, no air, minimal air.
• Proper acidity (pH)
• Salt levels.

Most bacteria collected in your environment will not be harmful. However, once they multiply into millions of colonies in a Petri dish they become more of a hazard. Be sure to protect open cuts with rubber gloves and never ingest or breathe in growing bacteria.

Bacteria grow most rapidly in the range of temperatures between 40 °F and 140 °F, doubling in number in as little as 20 minutes.

Each type of bacteria has its own preferred conditions for growth. Under ideal conditions, many types of bacteria can double every 20 minutes. Potentially, one bacteria can multiply to more than 30,000 in five hours and to more than 16 million in eight hours.

How to calculate the number of bacteria in a population

1. Example.
2. The mean division time for bacteria population A is 20 minutes.
3. In order to answer this, you can split the calculations into two sections.
4. If the bacteria grow for six hours, each bacterium will divide 3 times per hour × 6 hours = 18 times.

Bacteria can live in hotter and colder temperatures than humans, but they do best in a warm, moist, protein-rich environment that is pH neutral or slightly acidic. There are exceptions, however. Some bacteria thrive in extreme heat or cold, while others can survive under highly acidic or extremely salty conditions.

If cells divide every 30 minutes, after 24 hours, 48 divisions would have taken place. If we apply the formula 2n, where n is equal to 48, the single cell would give rise to 248 or 281,474,976,710,656 cells at 48 generations (24 hours).

How long will it take to get a million bacteria? After 200 minutes (3 hours 20 mins), there are over a million bacteria. High temperatures kill bacteria. Food hygiene regulations say that hot food served at a buffet should not fall below 63°C for more than 2 hours.

800 bacteria

FAT TOM is a mnemonic device used in the food service industry to describe the six favorable conditions required for the growth of foodborne pathogens. It is an acronym for food, acidity, time, temperature, oxygen and moisture.