Agar

The video discusses the use of an extract from certain species of red algae, highlighting its role as a gelling agent in microbiology and food preparation. It is widely used in laboratories as a non-specific medium to cultivate bacteria, fungi, and some algae.

What is the source of the extract discussed in the video?

• Brown algae

• Blue-green algae

• Green algae

• Red algae

In which fields is the extract used as a gelling agent?

• Astronomy and physics

• Microbiology and food preparation

• Botany and zoology

• Geology and meteorology

What is a common use of the extract outside of laboratories?

• As a fertilizer

• As a food preservative

• As a gelling agent in food preparation

• As a cleaning agent

What is the primary function of the extract in laboratories?

• To enhance color

• To act as a nutrient source

• To serve as a non-specific medium

• To provide structural support

Which organisms can be cultivated using this extract in labs?

• Bacteria, fungi, and some algae

• Insects and reptiles

• Viruses and bacteria

• Plants and animals