Using Green Algae in the Lab

Green algae (Scenedesmus quadricauda) is an excellent example of a typical planktonic algae. In the biology lab, it makes a wonderful resource for demonstrating photosynthetis, but in the wider world, it offers potential for creating algal biofuels.

Practicals

• Photosynthesis - Resource: Photosynthesis using algae wrapped in jelly balls
  
• Eutrophication - Algal blooms and the effects of eutrophication 
  

Teaching Topics

• Photosynthesis
• Eutrophication
  

Description

Green Algae, Scenedesmus quadricauda

A good example of typical planktonic algae with a four to eight celled structure, which stays buoyant because of spines. Widely distributed across the UK. (information provided by Sciento)

Growing and sourcing

Obtaining: Sciento supply this algae and the growing medium, as do Blades Biological. 

Care: Blades advise a warm room and the use of algal growth medium. They recommend subculturing your supply every three weeks.

Curriculum Links   

GCSE

• AQA GCSE Science A C.1.7.2 - suggested practical
• AQA GCSE Science B 3.3.1.2 - suggested practical
• AQA GCSE Science B 3.5.3 theme 3, Improving our environment: algal blooms - Opportunity for practical

A-level

• AQA Biology AS/A2 3.4.3 - Opportunities for practicals
• Scottish Highers Unit 2 Metabolism - Photosynthesis experiments