Save
...
Paper 2
Ecology
Decay
Save
Share
Learn
Content
Leaderboard
Share
Learn
Created by
Holly Rashid
Visit profile
Cards (36)
What do microorganisms release back into the soil during decay?
Mineral ions
View source
What gas do microorganisms release back into the atmosphere during the carbon cycle?
CO₂
View source
What is the purpose of compost heaps in gardening?
Decompose
plant materials
Produce compost as a natural fertilizer
Enrich
soil
for plant growth
View source
What materials do gardeners put on compost heaps?
Dead
plant
materials
View source
What organisms are primarily responsible for decomposition in compost heaps?
Bacteria
and
fungi
View source
What do decomposers produce during decomposition?
Compost
rich in nutrients
View source
What conditions are optimal for decomposition?
Warm
conditions
View source
What do enzymes do in the decomposition process?
Break down
plant materials
View source
How do warm conditions affect decomposers?
They speed up
enzyme activity
View source
What happens if the compost heap gets too hot?
Enzymes
will
denature
View source
What type of respiration do decomposers primarily carry out?
Aerobic
respiration
View source
Why do compost bins have holes in them?
To allow
oxygen
to enter
View source
What tool do gardeners use to mix compost?
A
gardening fork
View source
What is the effect of mixing compost?
Increases
oxygen supply
View source
What do microorganisms carry out in the absence of oxygen?
Anaerobic
decay
View source
What gas is produced during anaerobic decay?
Methane
View source
What is biogas?
A mixture of gases including
methane
View source
What materials are used in small-scale biogas generators?
Plant materials and
animal
manure
View source
How can biogas generators benefit homes?
By providing
fuel
View source
What is the process of aerobic respiration in decomposers?
It requires
oxygen
to break down materials
View source
Why is oxygen important for aerobic respiration?
It is required for
energy production
View source
What is the significance of anaerobic decay in waste management?
It helps in
recycling
organic waste
View source
What is biogas primarily made of?
Methane
View source
How is biogas generated?
Through
anaerobic
decay
of waste material
View source
What type of waste is used to produce biogas?
Plant
and
animal
waste
View source
What role do microorganisms play in biogas production?
They
decay
waste
anaerobically
to produce
methane
View source
What is the name of the fermenter used to produce biogas?
Digester
or
generator
View source
Why must biogas generators maintain a constant temperature?
To keep
microorganisms
respiring
View source
What happens to biogas if stored at high pressure?
It
can't
be
stored
View source
What are some uses of biogas?
Boiling, cooking, lighting,
generating
electricity
View source
What are the two main types of biogas generators?
Batch generators
Make biogas in small batches
Manually loaded with waste
By-products cleared after each session
Continuous generators
Make biogas continuously
Waste is constantly fed into the system
View source
How do batch generators operate?
They make
biogas
in small batches
View source
What is the process for clearing by-products in batch generators?
By-products are cleared after each
session
View source
How do continuous generators differ from batch generators?
Continuous generators make
biogas
all the time
View source
What is a common application of biogas in energy generation?
Powering a turbine to generate electricity
View source
What is the significance of anaerobic decay in biogas production?
It produces
methane
gas from waste material
View source