Decomposition (Edexcel GCSE Biology): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What is decomposition?
What is decomposition?
Breaking down organic material into simpler forms
How does warmer temperature affect decomposition rate?
How does warmer temperature affect decomposition rate?
It speeds up decomposition
What happens to enzymes if temperature gets too high during decomposition?
What happens to enzymes if temperature gets too high during decomposition?
They denature
Why do microorganisms need water for decomposition?
Why do microorganisms need water for decomposition?
Essential for their respiration
What do most decomposers require oxygen for?
What do most decomposers require oxygen for?
Aerobic respiration
What is compost used for?
What is compost used for?
Natural fertiliser rich in nutrients
What does aerobic respiration produce that speeds up composting?
What does aerobic respiration produce that speeds up composting?
Heat as a by-product
What temperature is refrigeration typically maintained at?
What temperature is refrigeration typically maintained at?
Around 4°C
Does freezing kill all bacteria and fungi in food?
Does freezing kill all bacteria and fungi in food?
No, some may survive
Why does drying food help preserve it?
Why does drying food help preserve it?
Removes water microorganisms need
How do salt and sugar preserve food?
How do salt and sugar preserve food?
Create hypertonic environment
What gas is produced during anaerobic decomposition?
What gas is produced during anaerobic decomposition?
Methane
What temperature do biogas generators require?
What temperature do biogas generators require?
Around 30°C