Unit A: Bio 20 Flashcards
What is the smallest living part of an organism?
Cell
What are groups of cells with similar functions called?
Tissue
What are groups of tissues with similar functions called?
Organ
What is a group of organisms of the same species in the same area called?
Population
What is a group of organ systems called?
Organism
What is a group of organs called?
Organ System
What is a group of different species living in the same area called?
Community
What is a community and its biotic and abiotic components called?
Ecosystem
What is a large area and its organisms called?
Biome
What is a narrow zone around the Earth with life called?
Biosphere
What is the number of species in an ecosystem called?
Biodiversity
Continuous changes within an environment
Dynamic Equilibrium
What is the species that is most sensitive to changes in an ecosystem called?
Indicator Species
Species is close to extinction in all parts of the country or in a large location
Endangered
Species no longer exists in one part of the country but is in others
Extirpated
Species is likely to become endangered if things continue the way they are
Threatened
Species at risk due to low or declining numbers at the fringe of its range or in a restricted area
Special Concern
The species no longer exists
Extinct
Artificial biosphere made in Arizona - living laboratory
Biosphere 2
Everything that takes up space and has mass
Matter
The ability to do work
Energy
What is the category of organisms defined by how they get energy called?
Trophic Level
Organisms that get energy from sunlight, convert inorganic to organic, basic tropic level and support all other organisms
Autotroph
The process by which food is made by bacteria or other living things using chemicals as the energy source, typically in the absence of sunlight, often in caves or in the ocean
Chemosynthesis
Organisms that get their energy by consuming other organisms
Heterotroph
Herbivores
Primary Consumers
Carnivores and Omnivores
Secondary and Tertiary Consumers
Organisms that get energy from dead organisms and waste products
Decomposers
Eat tissues from dead organisms
Scavengers
An organism that lives on abiotic organic matter, absorbing/digesting it
Saprotroph
Energy cannot be created or destroyed, simply changed from one form to another
First Law of Thermodynamics
In every energy conversion, some energy is lost and less energy remains available for the next conversion
Second Law of Thermodynamics
