A relationship between two species in which both species benefit
Back
Commensalism
Front
A relationship between two organisms of different species where one benefits and the other is neither harmed nor benefited
Back
predator-prey interactions
Front
an important process for transferring energy from one trophic level to the next.
Back
ATP
Front
(adenosine triphosphate) main energy source that cells use for most of their work
Back
threats to biodiversity
Front
habitat loss, introduced species, overharvesting, global change
Back
Biotic factors in an ecosystem
Front
living factors such as humans, plants, animals, and fungi
Back
Photosynthesis
Front
process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches
Back
Respiration
Front
The process by which cells break down simple food molecules to release the energy they contain.
Back
carbon cycle
Front
the movement of carbon from the nonliving environment into living things and back
Back
primary consumer
Front
An organism that eats producers
Back
competition
Front
the struggle between organisms to survive in a habitat with limited resources
Back
carrying capacity
Front
Largest number of individuals of a population that a environment can support
Back
Nucleotide
Front
monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
Back
Parasitism
Front
A relationship between two organisms of different species where one benefits and the other is harmed
Back
Enzyme
Front
A type of protein that speeds up a chemical reaction in a living thing
Back
Succession
Front
(ecology) the gradual and orderly process of change in an ecosystem brought about by the progressive replacement of one community by another until a stable climax is established
Back
Decomposer
Front
an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
Back
pioneer species
Front
first species to populate an area during succession
Back
secondary consumer
Front
An organism that eats primary consumers
Back
food pyramid
Front
a model that shows the loss of energy from one trophic level to another; often called an ecological pyramid
Back
amino acids
Front
a simple organic compound containing both a carboxyl (—COOH) and an amino (—NH2) group.
Back
Ecosystem
Front
A biological community of interacting organisms and their physical environment.
Back
Consumer
Front
An organism that obtains energy by feeding on other organisms
Back
population graph
Front
A histogram showing the population structure of a country, also called an age-sex pyramid
Back
Producer
Front
An organism that makes its own food
Back
Bio molecules
Front
Organic molecules found in all living organisms e.g. lipids, carbohydrates and proteins.