5.2 Energy transfers Flashcards
How much biomass and energy is available at each successive stage in a food chain?
less in each stage
How much biomas and energy is available at each successive stage in a food chain?
less in each stage
Why is ther less energy available at each successive stage of a food chain?
Because some of the materials have been used up
What does the energy (food, light) taken in by an organism get used for 4
growth and repair
some is wasted as not all food is digestable.
Some is used for respiration Important to remember that it is respiration which releases energy for movement.
Some is used to maintain temperature
What happens to the energy released in respiration
It is eventually transferred to the surroundings
What process in cells releases energy from food material?
Respiration(as this provides oxygen to the blood and then the tissues)
What is the name of a diagram that is used to show energy intake and energy use or transfer in an animal?
Sankey diagram
What is a Sankey diagram?
a diagram that is used to show energy intake and energy use or transfer in an animal?
Is energy lost as it passes through the stages of a biomass?
No, it is transferred. This does not necessarily mean it is used, it may turn into heat or waste products.
To where do herbivores loose most of their energy
large loss of undigested food in faeces
To where do warm blooded carnivores loose most of their energy
to the environment as they have to keep warm.
Do cold blooded animals loose much energy to the environment
No, very little energy is needed to keep them warm
Do carnivores loose much energy in undigested food
No
What happens to energy lost by animals (lost through faeces, movement, maintaining body temperature etc)
It heats the environment
Why is there less energy available at each successive stage of a food chain?
Because some of the materials have been used up
