bread mould experiment grade 11 memorandum

Bread Mould Experiment for Grade 11

The bread mould experiment is a common practical activity in grade 11 CAPS (Curriculum Assessment Policy Statement) Science in South Africa. The aim of this experiment is to demonstrate the process of fungal growth on food.

Bread Mould Experiment for Grade 11 Process

• Two slices of bread
• A zip-lock plastic bag
• Water spray bottle
• Paper towel
• Wash your hands thoroughly before starting the experiment.
• Take two slices of bread and place them into the zip-lock plastic bag.
• Close the bag, but make sure it is not airtight, as air is needed for the experiment.
• Label one slice of bread as “control” and the other as “experimental.”
• Spray a small amount of water onto the experimental slice of bread.
• Use a paper towel to remove any excess moisture from the bag.
• Place the bag in a warm, dark place, such as a cupboard or drawer.
• Observe the slices of bread after 24 hours, 48 hours, and 72 hours. Record your observations in a table.

Observations:

After 24 hours, both slices of bread should look similar. However, after 48 hours, the experimental slice of bread should start to show signs of fungal growth, while the control slice remains relatively unchanged. By 72 hours, the experimental slice should be fully covered in mould, while the control slice should remain relatively unchanged.

Conclusion:

The bread mould experiment demonstrates the process of fungal growth on food. It highlights the importance of proper food storage and hygiene practices to prevent the growth of harmful fungi on food. This experiment also provides an opportunity for learners to develop skills in scientific observation, data collection, and analysis.

Downloadable Bread Mould Experiment for Grade 11

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Bread Mould Experiment for Grade 11

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Bread Mould Experiment for Grade 11 The bread mold experiment is a typical hands-on exercise in South African grade 11 CAPS (Curriculum Assessment Policy Statement) science. This experiment aims to show how fungal growth occurs on food.

Bread Mould Experiment for Grade 11 Process

• Two slices of bread
• A zip-lock plastic bag
• Water spray bottle
• Paper towel
• Wash your hands thoroughly before starting the experiment.
• Take two slices of bread and place them into the zip-lock plastic bag.
• Close the bag, but make sure it is not airtight, as air is needed for the experiment.
• Label one slice of bread as “control” and the other as “experimental.”
• Spray a small amount of water onto the experimental slice of bread.
• Use a paper towel to remove any excess moisture from the bag.
• Place the bag in a warm, dark place, such as a cupboard or drawer.
• Observe the slices of bread after 24 hours, 48 hours, and 72 hours. Record your observations in a table.

Observations:

After 24 hours, both slices of bread should look similar. However, after 48 hours, the experimental slice of bread should start to show signs of fungal growth, while the control slice remains relatively unchanged. By 72 hours, the experimental slice should be fully covered in mould, while the control slice should remain relatively unchanged.

Conclusion:

The bread mould experiment demonstrates the process of fungal growth on food. It highlights the importance of proper food storage and hygiene practices to prevent the growth of harmful fungi on food. This experiment also provides an opportunity for learners to develop skills in scientific observation, data collection, and analysis.

Downloadable Bread Mould Experiment for Grade 11

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Science Struck

A Simple Experiment to Grow and Study Bread Mold

Bread mold experiment is a fun science project, where one can observe the growth of a live organism on household bread! Here is a detailed guide that will help you in conducting this experiment.

Like it? Share it!

Many people tend to find mold growing on bread disgusting. But, did you know that mold is also one of nature’s cleansers , that breaks down dead organic materials and recycles these nutrients back to the soil, which makes it essential for the ecosystem?

Mold is a type of fungi, which grows on any plant or animal material. Mushrooms and toadstools are a type of fungi. Mold grows on food and other organic matter, and thus, breaks it down into slime by which it extracts nutrient for its growth. This is many times studied in school with a simple experiment.

Bread Mold Project

To study the growth of mold on bread samples every alternate day, for a course of 2 weeks.

If you are allergic to mold, then avoid performing this experiment or use mask and gloves for safety. Seek permission from your parents and teacher before you start with the experiment. Also, after you are done noting down the results of the experiment, dispose off the bags containing moldy bread safely, without opening them.

Here is a list of materials you will need to perform the experiment.

• 5 slices of bread
• 5 transparent sealable bags
• Sticky labels
• Magnifying glass
• 5 – 7 cotton swabs
• A tablespoon
• Lemon juice/water/apple juice/salt/sugar (at least two of these items are required)

Growing mold can be a simple experiment, and performed on a slice of bread. However, to make it interesting and more detailed you can work on 5 samples of breads rather than just one. So, gather the above equipment and follow the below steps.

• Take the cotton swabs and run them over areas which have dust, like under a table, bed, or basement.
• Then rub the dust from cotton swab over the first bread slice.
• Repeat steps 2 for the other four bread slices.
• Seal three bread slices inside three transparent sealable bags.
• Put sticker on the three bags, and write down using a marker on them.
• On the first sticker write “Sample #1 – Dark Closet”; on second write “Sample #2 – Refrigerator”, and on the third write “Sample #3 – Under Light”.
• So, keep the first sample in a dark closet, second in a corner of the refrigerator where it doesn’t gets disturbed, and the third one in an area of the house which is most of the time brightly lit.
• Now, take the remaining two samples. Before you seal them in the bags and mark them with sticker add one of the above mentioned five items to them. For example, on the fourth bread sample you can add some salt, while on the fifth you can add 2 tablespoons of water. Keep these two sample in a place where they don’t get disturbed.

Observations

Wear mask and gloves whenever observing the bread mold samples. Make sure you observe the five bread samples every alternate day at a fixed time of the day, say 2 pm. It is important that you observe them every alternate day without fail, and note down your observations in a table. You can note down their physical appearance like color, shape, amount of growth per day, texture, etc. Another column of your table can be observations of the mold under the magnifying glass. If you want, you can take videos or pictures of the mold every alternate day. This will help in concluding your experiment.

If you are performing this experiment at home, then you might not have access to a microscope. However, when this experiment is performed in school many times the students are asked to observe the mold under a microscope. Note down, the appearance of the mold under the microscope, this can form a part of the observation. Usually, one sees thread like structures on top of which there is a circular shape. Here is a diagram of bread mold in detail.

You will observe different conclusions for different samples. The mold which was kept in a warm, dark, and moist condition will grow the best. However, the sample that was in the refrigerator will have a slower growth. Also, substances like salt tend to slow down the growth of bread mold. Conclusion is an important part of the experiment, so make sure you read your observations carefully before you put down the appropriate conclusion of the project. Here are pictures of mold growth on different types of breads.

Further Experimentation

Once you have tried out this experiment, you can try out further experiments using different materials. You can try growing mold on different types of breads, while maintaining the same temperature. You could also try adding more moisture to the slices of the bread, or use different amounts of lemon juice and sugar on the slices. This way you can vary one element, and note down various observations of the mold growth. So, select a hypothesis and using the appropriate materials perform the experiment again. You can also consider growing mold on soft fruits. Here are pictures of mold growing on a lemon, few strawberries, and a tangerine.

Interesting Mold Facts

The above experiment will help to study bread mold in detail. Here are some fun facts about mold that will add to your knowledge.

Mold is used by various companies to make food and medicine.

Did you know that mold is added to flavor certain cheeses? You can observe blue-gray veins on a piece of blue cheese, which appear due to the mold added to it.

Lichens are formed due to an awesome partnership between fungi and algae.

There are over 10,000 species of mold!

Did you know that outdoors, mold is almost everywhere?

To prevent mold from growing on foodstuffs, the food industry spends a lot of money on refrigeration.

I hop you enjoyed reading the above facts on mold. So, gather the equipment necessary for the experiment, perform the experiment, note down the observations every alternate day, and draw the appropriate conclusion. Good luck!

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Practical: bread mould

Dear learners Please note that a on hands practical is coming up. Note that you are required to create your own bread mould specimen for the practical. Here’s how:

1. Take a slice of bread and place it in an old non reusable container (one that you can throw away or recycle)

2. Add few drops of water to the bread, note that you should NOT soak the bread in water completely.

3. Place the container in a dark cupboard and store for 6 days. Observe your specimen daily and record what you notice each day. Your observations and recordings are important for the practical.

4. To speed up the growth of the mould you can add a few drops of sugar water solution to the specimen. Once again, make sure not to soak the bread completely.

5. Write down your observations on an A4 page and keep your recordings for the practical day. You would need your specimen for the microscope activity.

6. Remember to keep you specimen in a dark cupboard and it should be moist.

Happy bread moulding! 😀 Hope your experiment works out.

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2 responses to practical: bread mould.

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2022 Grade 11 Life Science Task 1 Practical 1

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Bread Mold Experiment

Ever ended up with a loaf of moldy bread at home? It’s not something you want to eat! Instead, grow mold on bread for science, and investigate how moisture, temperature, and air affect mold growth. A fun and easy way to observe the mold life cycle for a hands-on biology experiment for kids .

Bread Mold Experiment Variations

Extend the learning by varying your experiment:

Remember only to change one variable for each experiment!

• Add the same amount of water to different types of bread.
• Place the same type of bread in light or dark conditions.
• Use the same type of bread and vary the amount of water on each.
• Place the same type of bread in a warm area and one in a cold area. Use a thermometer to work out the temperature.
• Place the same type of bread in a bag and one directly exposed to air.

Why not use extra slices of bread and set up this germ science experiment !

• 2 slices of bread

Instructions:

STEP 1: Label the plastic bags to identify each slice.

TIP: Don’t forget to make one or two predictions before you start. What do you think will happen to each slice?

STEP 2: Add 10 drops of water to one slice and seal.

STEP 3: Now add a dry piece of bread to the second bag.

STEP 4: Place the slices in a warm, dark place if possible. Observe and record.

Tip: Make observations every 2nd day over the course of 2 weeks depending on how fast the mold is growing.

Which piece of bread had the most mold on it? Make sure to read the science of mold to find out why.

The Science of Mold

Explores the fascinating world of fungi, like Rhizopus stolonifer, that often grow on bread with simple bread mold experiments. These tiny organisms love damp places so bread, with its moisture, is like a paradise.

Mold spores, everywhere in the air, land on the bread. When it’s warm, and there’s enough air and moisture, these spores grow into visible mold.

They grow quickly using special substances that break down the bread’s sugars. The fuzzy stuff you see on moldy bread is made of tiny threads called hyphae, which join together to form a network called mycelium. This helps the mold take in food from the bread.

Understanding bread mold helps us to see how fungi grows and shows how important conditions like warmth, air, and moisture are for these microorganisms to spread.

Turn It Into A Bread Mold Science Fair Project

Science projects are an excellent tool for older kiddos to show what they know about science! Plus, they can be used in all sorts of environments including classrooms, homeschool, and groups.

Kids can take everything they have learned about using the scientific method , stating a hypothesis, choosing variables , making observations and analyzing and presenting data.

Want to turn this experiment into an awesome science fair project? Check out these helpful resources.

• Science Project Tips From A Teacher
• Science Fair Board Ideas
• Easy Science Fair Projects

Free Printable Science Journal Worksheets

Create a science notebook with these easy-to-use science worksheets to accompany any experiment. Grab your free science process journal pack !

More Fun Biology Science Experiments To Try

• Investigate seed germination with a seed jar .
• Set up a mini-greenhouse .
• Make a model of your heart or of your lungs .
• Learn with animal cell and plant cell coloring sheets .
• Try this easy strawberry DNA lab.
• Set up a germ experiment.
• Explore the life cycles of various animals and plants .
• Candy DNA and coloring sheet.

Helpful Science Resources

Here are a few resources that will help you introduce science more effectively to your kiddos or students. Then you can feel confident yourself when presenting materials. You’ll find helpful free printables throughout.

• Best Science Practices (as it relates to the scientific method)
• Science Vocabulary
• 8 Science Books for Kids
• All About Scientists
• Science Supplies List
• Science Tools for Kids
• Join us in the Club

Printable Science Projects For Kids

If you’re looking to grab all of our printable science projects in one convenient place plus exclusive worksheets and bonuses like a STEAM Project pack, our Science Project Pack is what you need! Over 300+ Pages!

• 90+ classic science activities  with journal pages, supply lists, set up and process, and science information.  NEW! Activity-specific observation pages!
• Best science practices posters  and our original science method process folders for extra alternatives!
• Be a Collector activities pack  introduces kids to the world of making collections through the eyes of a scientist. What will they collect first?
• Know the Words Science vocabulary pack  includes flashcards, crosswords, and word searches that illuminate keywords in the experiments!
• My science journal writing prompts  explore what it means to be a scientist!!
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