Energy Transfer Flashcards
Word equation for respiration
Glucose + oxygen > carbon dioxide + water (+ energy)
Word equation for photosynthesis
Carbon dioxide + water > Glucose + oxygen
What things photosynthesise?
Photo autotrophic organisms
E.g. Plants, protoctists and some bacteria
How is some energy lost through photosynthesis?
Not all light absorbed by chloroplasts
Not all wavelengths drive photosynthesis
Some light reflected by waxy cuticle
How is some energy lost through eating the producer?
Not all of plant eaten
Some cellulose is egested
Plant respires
How is energy lost through feeding on a consumer?
Some parts of zebra not edible
Zebra movement/excretion/respiration wastes energy
Define producers
Organisms which photosynthesise to produce food from inorganic molecules
Define consumers
Animals that eat plants and/or other animals in order to obtain food
Define habitats
Places where specific organisms live
Define decomposers
Organisms that produce extra cellular enzymes to break down organic compounds into soluble molecules (decay of dead material)
Nb: they respire
How do you calculate biomass?
What unit is biomass used in
Number of individuals x mass of each individual
Measured in mass per unit area (E.g. Km/m2)
Wht is the population?
All the organisms of a specific species living in an Eco system
What is a community?
The populations of all the species in an area
