Yeast is a type of fungus. It is a micro-organism used for making bread.

Fermentation happens when yeast takes in nutrients from food and releases carbon dioxide and alcohol.

In a conclusion, scientists explain what the results show or mean.

The evaluation of an investigation includes what went well, what could have been improved and whether the investigation question was answered.

Growing yeast: do and review (non-statutory)

Science

In this Why we group and classify living things unit, pupils learn about why we classify plants and animals based on specific characteristics. In the Species and classification unit, they will build on this knowledge to learn more about the identification and classification of organisms, including at the cellular level.

In the Living things and the environment unit, pupils learnt to recognise that living things can be grouped in a variety of ways. In this Why we group and classify living things unit, pupils will build on this knowledge to give reasons for classifying plants and animals based on specific characteristics

Why we group and classify living things

Physical activity and equipment requiring safe use

Which of these is the best food source for yeast?

When scientists describe what happened in an enquiry and explain what the results show or mean, it is called making a...

scientists think about how well their results answer their original question.

scientists explain to others what their results show.

scientists represent their findings in visual ways such as using a line graph.

scientists write a list of everything they did during an investigation.

Yeast takes in nutrients from food and releases carbon dioxide gas. This process is useful for baking and beer making and is called...

bubbles appearing at the top of his mixture

powder appearing at the top of his mixture

Lucas has been observing fermentation happening over time inside bottles containing a mixture of yeast, sugar and warm water. What evidence could he look for that would show fermentation is happening?

In a comparative test, scientists control {{}} to make sure their results show the effect of just one thing.

Which equipment could be used for measuring the amount of substances used in an enquiry?

substances that can only be found in the ground

substances that living things use to stay alive and healthy

substances that living things can reproduce

all of them except for the one being investigated

Which variables must be kept the same in a comparative or fair test investigation?

Content guidance

Risk assessment required - equipment

Adult supervision required

Starter Quiz