Section 3.2 & 3.3 Flashcards
Define Energy for Life
The sun is the primary source of energy. It moves through organisms, first producers and then consumers.
What is a Producer?
Uses energy from the sun to build energy-rich molecules via photosynthesis…also called autotrophs.
What is Photosynthesis?
The use of light energy to power chemical reactions that convert carbon dioxide and water to oxygen and energy-rich carbohydrates such as sugars and starches. That is Carbon Dioxide + Water (with light energy) creates Carbohydrates and Oxygen.
What is an autotroph?
An organism that can capture energy from sunlight or chemicals and use that energy to produce food.
What is the original source of energy for all ecosystems on earth?
Sunlight
What is a food chain?
A series of steps showing the transfer of enery among the organisms that are eating or being eaten.
What is a food web?
A food web shows a network of complex interactions linking all the food chains in an ecosystem together.
What is an ecological pyramid?
A diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or food web.
What is a biomass pyramid?
A pyramid that shows the total amount of living tissue within a given trophic level is called biomass.
What is a biogeochemical cycle?
Elements, chemical compunds, and other forms of matter are passed from one organism to another and from one part of the bioshpere to another through biogeochemical cycles.
What is in the Water Cycle?
Transpiration: Evaporation from the leaves of pants in the process.
Condensation: Atmospheric gas turning into a liquid.
Evaporation: Water changes from liquid to gas.
Precipitation: Water vapor that falls under gravity
Ex: Rain
Run off: Water goes through a stream or river back into the ocean or lake.
If only 10% of of the energy you eat is stored in your body… Where does the rest go?
It is released into the enviorment as heat.
Where is carbon stored?
Rocks, The Atmosphere, marine organisms, soil, and in underground coal.
What is nirtrogen fixation?
When such bacteria, which live in the soil and on the roots of plants called legumes, convert nitrogen gas into ammonia in a prccess know as nitrogen fixation.
Which location has the most nurtrients? A. Rest of land B. ice caps C.The oceans D. The mountains
Rest of land because most of the plants and nutrient rich things etc. are on land.
What is primary productivity?
Rate at which organic matter is created by producers.
What is a limiting nutrient?
A nutrient that is scarce or cycles very slowly.
What is algal bloom?
When an aquatic ecosystem receives a large input of a limiting nutrient it is called algal bloom.
What is a biotic factor?
The biological influences on organisms within ann ecosystem: The living things.
What is an abiotic factor?
The non living factors of an ecosystem.
What is a niche?
Is the full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions.
What is predation?
The organism that does the killing and eating is called the predator.
What is mutualism?
When both species benefit from a relationship.
What is commensalism?
when only one member of the relationship benefits but the other one is neither helped nor harmed.
