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Bio Chapter 1


Biosphere All organisms and where they exist
Biodiversity The variety of organisms in a certain area, the genetic variety in a population, variety of species in a community, the variety of communities in an ecosystem
Species A group of organisms that are closely related and can mate to produce fertile offspring; also the level of species below genus and above subspecies
Biology The scientific study of life
Science Knowledge gained from studying natural events and conditions in order to make laws and principles that can be tested
Organism A living thing
Cell In biology, it is the smallest thing that can carry out all life functions; covered by a membrane and contain cytoplasm and DNA
Metabolism The sum of all chemical processes that occur in an organism
DNA deoxyribonucleic acid, the material that determines inherited characteristics
System A changing, organized group of related parts that interact to make a whole
Ecosystem A community of organisms and their abiotic enviornment
Homeostasis The maintenance of a constant internal state in a changing environment; a constant internal state that is maintained in a changing environment by continually making adjustments to the internal and external environment
Adaptation The process of becoming adapted to an environment, an anatomical, physiological, or behavioral change that improves a population's ability to survive
Observation Process of obtaining information by using the senses
Data Observations and measurements recorded during an experiment
Hypothesis A testable idea that leads to the scientific method
Experiment A procedure that is carried out under controlled conditions to discover, demonstrate, or test a fact, theory, or general truth
Independent variable Condition or factor that is manipulated by a scientist during an experiment
Dependent variable Experimental data collected through observation and measurement; changes depending on the independent variable
Constant Variable that is controlled so that it doesn't change during an experiment
Theory A system of ideas that explains many related observations and is supported by a large body of evidence acquired through scientific investigation
Measurement A determination of the dimensions of something using a standard unit
Accuracy A description of how close a measurement is to the true value of the quantity measured
Precision The exactness of a measurement
Microscope Tool that provides an enlarged image of an object
Gene The most basic physical unit of heredity; a segment of nucleic acids that codes for a functional unit of RNA and/or a protein
Molecular genetics Study of DNA structure and function on the molecular level
Genomics The study of entire genomes, especially by using technology to compare genes within and between species
Biotechnology Use and application of living things and biological processes
Transgenic Organism whose genome has been altered to contain one or more genes from another organism or species
Created by: simsn22