Chapter 2 Flashcards
System
a network of interdependent components and processes
Ecosystem
a complex assemblage of animals, plants, and their environment
Open system
enters and/or exits
Closed System
nothing comes in, nothing comes out
Throughput
energy and matter that flow through a system
Positive Feedback Group
more of 1 thing means more of another
Negative Feedback Group
less of 1 thing means less of another
Elements
substances that cannot be broken down into simpler forms
Atoms
smallest unit of elements. Examples= carbon, oxygen
Acid and Base scale
the lower the number= acid
the higher the number= basic
Carbohydrates
Function is for energy in the short term
lipids
function is energy in long term
proteins
function is enzymes/energy in body
Nucleic Acids
function is holding genetic information
Cells
fundamental unit of life
Sun
Primary producer ultimate energy source for life on earth
Photosynthesis
using suns energy
chemo synthesis
inorganic chemical compounds
Species
organisms that are genetically similar enough to breed and produce live, fertile offspring
population
members of a species living in a given area at the same time
community
populations of organisms living in a particular area
Primary producers
atotrophs. example is grass
primary consumers
herbivores. example is ant, bunny
secondary consumers
carnivores. example is aardvark
