Vocab
a series of chemical reactions that convert light energy, water, and carbon dioxide into the food-energy molecule glucose and give off oxygen
photosynthesis
a model that shows how energy flows in an ecosystem through feeding relationships.
food chain
What are the products of photosynthesis?
glucose and oxygen
Describe how ENERGY flows through an ecosystem
it flows in one direction from organism to organism
Describe how matter flows through an environment
It flows in cycles
a series of chemical reactions that convert the energy in food molecules into a usable form of energy called ATP
cellular respiration
water, in liquid or solid form, that falls from the atmosphere
precipitation
What are the products of cellular respiration? And what does it release?
carbon dioxide and water; releases ATP
A ____________________ is a model that shows the amount of energy available in each link of a food chain
energy pyramid
Which form of nitrogen is not usable for plants and animals?
atmospheric form
a process by which glucose, a sugar, is broken down into smaller molecules
Glycolysis
the process by which a gas changes to a liquid
condensation
Where does most photosynthesis occur in the leaf?
the mesophyll cells
What happens to the energy that is not used for life processes and not passed to the next trophic level?
it is released as thermal energy
How do humans obtain carbon?
How do plants obtain carbon?
from their food
from the atmosphere and bodies of water
an organism that consumes the bodies of dead organisms and wastes produced by living organisms.
detrivore
the process that changes atmospheric nitrogen into nitrogen compounds that are usable by living things
nitrogen fixation
How do plants and animals obtain their food?
plants - photosynthesis
animals - eating
According to the law of conservation of energy, what is true about energy?
energy cannot be created or destroyed
Where is most of Earth's water located?
Oceans
a model of energy transfer that can show how the food chains in a community are interconnected.
food web
the process of a liquid changing to a gas at the surface of the liquid
evaporation
What types of organisms perform cellular respiration?
What types of organisms perform photosynthesis?
plants and animals
plants
an organism that uses an outside energy source, such as the Sun, and produces its own food.
producer
How does the movement of water in ecosystems differ from the movement of energy?
water flows in a cycle while energy flows in one direction