Unit 1 Flashcards
What is the dependent variable?
The thing that you dont change in your experiment
What is Biology?
The study of al living things
What are organisms?
Living things
What is cytoplasm?
A gel like material that all cells contain
What are organelles?
A part of the cell that does different jobs
What are prokaryotic cells?
They are single celled organisms that lack a nucleus and membrane-bound organelles
What are eukaryotes?
Has a true nucleus and membrane-bound organelles
What is DNA?
DNA carries the genetic code for all organisms
What is an indepent variable?
The thing that you change in your experiment
What is a Biotic factor?
All the living organisms that inhabit an enviorment
What are Abiotic factors?
The nonliving parts of an organisms enviorment
What is a habitat?
The place a plant or animal lives
What is a Niche?
An organism’s total way of life
What is population?
A group of organisms that are all of the same speices, which interbreed and live in the same place at the same time
What is a community?
All the populations of different speices that live in the same place at the same time
What is an ecosystem?
Populations of plants and animals that interact with each other in a given area with the abiotic componets of that area
What is the biosphere?
The portion of earth that supports life
What is a herbivore?
Only eats plants
What is an omnivore?
Eats both plants and meat
What is a carnivore?
Only eats meat
What is symbosis?
An interaction between two different organisms living in close association.
What is mutualism?
Beneficial to both organsims involved
What is commensalism?
The association between two organisms in which one benefits and one is neither helped not harmed.
What is parasitism?
One orgainsim benfits and one is harmed
What are producers?
Producers are plants that make their own food.
What is ecology?
The relations of organisms to one another and their surroundings.
What’s a consumer?
Animals that can’t make their own food so they need to comsume other plants and/or animals.
What is biodiversity?
The variety of life in the world or in a particular habitat or ecosystem.
What is a decomposer?
An organism, especially a soil bacterium, fungus, or invertbrate, that decomposes organic material.
What is a food web?
A system of interlocking and interdependent food chains.
What is a food chain?
A series of organisms each dependent on the next as a source of food.
What is an energy pyramid?
Its a model of energy flow in a community. The different levels represent different groups.
What are limiting factors?
Something that doesn’t let the population grow any farther
What is primary succession?
Where an area of vegetation and other organisms are lacking soil
What is secondary succession?
When the soil was good and then it and the land gets damaged
What is a theory?
What someone thinks is going to happen
What is a hypothesis?
An assumption or guess of what will happen
What is a prediction?
Declare or tell in advance
What is the scientific method?
A six step procedure for performing scientific investigation
What is a control group?
A group of organisms that are treated the same way for an experiment
What is an experimental group?
A group of organisms that receive the experimental treatment
What is an observation?
To analyze something
What is a cell?
The structural, functional, and biological unit of all organisms
What is a tissue?
An aggregate of cells in an organism that have similar structure and function
What is an organ?
A group of tissues that perform a specific function or group of functions
What is an experiment?
A procedure done for the purpose of gathering observations, data, or facts
What is development?
A series of changes in an organism
What is organization?
The act of arranging in a systematic way for use or action
What does multicellular mean?
Having or consisting of many cells
What does unicellular mean?
Having or consisting of only one cell
What does metabolism mean?
The process involving a set of chemical reactions that modifies a molecule into another for storage, or for immediate use in another reaction or as a by product
What is homeostasis?
The ability of the body or a cell to seek and maintain a condition of stability within its internal environment when dealing with external changes
What is evolution?
The change in genetic composition of a population over successive generations, which may be caused by natural selection, inbreeding, hybridization, or mutation.
What is adaption?
A modification according to changing circumstances
What’s natural selection?
When organisms are adapted to their environment and go through things normally in the environment
What is reproduction?
The production of offspring
