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53 Cards in this Set
- Front
- Back
The overall domains in life are
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Bacteria, Archaea, and Eukarya
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A cell that has it's genetic material enclosed in a membrane called a nucleus is a
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Eukaryotic cell
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A small singular cell that does not have organelle is a
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Prokaryotic cell
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The study of living things
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Biology
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The very first step of the scientific method
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Observation
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An educated guess is
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Hypothesis
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In a experiment you must have conditions exactly like the experiment--but not being tested, this is the
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Control
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If you get into your car in the morning and it won't start, this is an
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Observation
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A rigorous procedure for making observatons of specific phenomena and searching for the order underlying those phenomena isthe definition
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Scientific Method
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A factor in a scientific experiment that is deliberately manipulated in order to test a hypothesis is a
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Vairable
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The dry weight of organic material in an ecosystem
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Biomass
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An organism that eats other organisms
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Heterotroph
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One of a diverse group of organisms, ranging from worms to vultures, that live off wastes and dead remains of other organisms
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Detritus Feeders
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Able to broken down into harmless substances by decomposers
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Biodegradable
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Description of the pathwasy,(such as carbon, nitrogen, phosphorus and water) through the nonliviling and living portions of an ecosystem
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Nutrient Cycle
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All of the interacting populations within an ecosystem
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Community
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Derived from the remains of ancient organisms
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Fossil Fuel
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The excess cutting of primarily rainforest in the Tropics to clear for agriculture
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Deforestation
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A producer like a tree
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Photosynthetic organism
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The main storage siteof a nutrient
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Reservior
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A graphical representation of the energy contained in succeeding trophic levels, with maximum energy at the base and steadily diminishing amounts at higher levels (10% rule)
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Energy Pyramid
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The increasing accumulation of a toxic substance in progressively higher trophic levels--A consequence of DDT that was bannedin the 70's--Causes deformities in predatory animals---A human health hazard
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Bioligical Magnification
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Interaction amoung individuals who attemptto utlize a resource that is limited relative to demand
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Competition
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The average birthrate at which a reporducing population exactly replaces itself during its lifetime
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Birth Rate
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The study of the changing human population
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Demography
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The maximum population size that and ecosystem can support indefinitely; determined primarily by the availability of space, nutrients, water, and light
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Carrying Capacity
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All of the organisms and their nonliving environment within a defined area
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Ecosystem
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The migration of individuals out of an area is known as
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Emigration
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An organism that kills and eats other organisms
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Predator
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All of the members of a particular species within an ecosystem, found in the same time and place and actually or potentially interbreeding
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Population
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The model that describes population change over time
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Demographic Transition
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Mexico is considered a developing country
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High birth rate/Low death rate
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A population cycle characterized by rapid exponential growth followed by a sudden massive die-off, seen in seasonal species and in some populations of small rodents, such as lemmings
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Boom-and-Bust Cycle
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The maximum rate at which a population could increased, assuming ideal conditions that allow a maximum birth rate and minimum death rate
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Biotic Potenial
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Any factor that tends to counteract biotic potential, limiting population size
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Environmental Resistance
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A terrestrial ecosystem that occupies an extensive geographical area and is characterized by a specific type of plant community; for example, deserts
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Biome
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An organism that is among the first to colonize and unoccupied habitat in the first stages of succession
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Pioneer
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A species who has a great influence on the community structure and you may only notice it if this species no longer exists
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Keystone Species
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A species that is introduced from another area, often called exotic at the same time of introducton. They often have no resistance factors and thereby tend to displace native species
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Invasive Species
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A Plant Eater
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Herbivore
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A close interaction between organisms of different species over and extended period of time. Includes parasitism, mutualism, and commensalism
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Symbiosis
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The coexistence of two species with similar requirements, each occupying a smaller niche than either would if it were by itself, a means of minimizing their competitive interactions
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Resource Partitioning
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A Structural change in a community and its nonliving environment over time. Species replace one another in a somewhat predictable manner until a stable, self-sustaining climax community is reached
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Succession
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A symbiotic relationship in which both participating species benefit
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Mutualism
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The capacity to make changes in behavior on the basis of experience is called
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Learning
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The word we used for chemical communication
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Pheromone
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Habituation is a form of
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Learning
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When baboons pick bugs out of their young baboon's hair the is a form of
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Communication by Touch
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Any observable activity of a living animal
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Behavior
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The production of a signal by one organism that causes another organism to change its behavior in a way beneficial to one or bith is
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Communication
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The wolf signals aggression by loweringits head
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Active Visual signal
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Which type of communication is most effective over short distances
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Visual
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Behaviors that are shared by infants in diverse cultures like smiling, grasping, and expressions of pleasure or rage are
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Innate
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