Question detail
Describe the role of microorganisms in aerobic biological treatment of effluent.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Using the Earth's resources and obtaining potable water
Question
Describe the role of microorganisms in aerobic biological treatment of effluent.
Answer
Microorganisms in aerobic biological treatment consume organic matter in the effluent as their food source, using oxygen to metabolize these substances. This process converts harmful organic compounds into less harmful substances, such as carbon dioxide and water.
Explanation
A strong answer should directly address the approved learning objective to describe aerobic biological treatment of effluent. This question belongs to Waste water treatment within Using the Earth's resources and obtaining potable water, so the response should use that exact curriculum context rather than a generic statement. The answer is correct when it names the key idea, explains the link to effluent, and keeps the wording specific to AQA GCSE revision.
Common mistake
Confusing Aerobic and Anaerobic Treatment
Students often confuse aerobic biological treatment with anaerobic digestion, thinking both processes occur in the absence of oxygen.
Remember that aerobic treatment requires oxygen, while anaerobic digestion occurs without oxygen. Focus on the role of oxygen in the breakdown of organic matter.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.