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biology chapter 1

1.1 - 1.5 terms

TermDefinition
Biosphere all organisms and the part of earth where they exist
biodiversity the variety of organisms in a given area, the genetic variation within a population, the variety of species in a community, or the variety of communities in an ecosystem
species a group of organisms that are closely related and can ate to produce fertile offspring; also the level of classification below genus and above subspecies
biology the scientific study of living organisms and their interactions with the environment
science the knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles that can be verified or tested
organism a living thing; anything that can carry out life processes independently
cell in biology, the smallest unit that can perform all life processes; cells are covered by a membrane and contain DNA and cytoplasm
metabolism the sum of all chemical processes that occur in an organism
DNA deoxyribonucleic acid, the material that contains the information that determines inherited characteristics
system changing, organized group of related parts that interact to form a whole
ecosystem a community of organisms and their abiotic environment
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
evolution generally, in biology, the process of change by which new species develop from preexisting species over time; at genetic level, the process in which inherited characteristics whit in populations change over time
adaptation the process of being adapted to an environment; an anatomical, physiological, or behavioral change that improves a population's ability to survive
observation the process of obtaining information by using the senses; the information obtained by using the senses
data observations and measurements recorded during an experiment
hypothesis a testable idea or explanation that leads to scientific investigation
experiment a procedure that is carried out under controlled conditions to discover, demonstrate, or test, 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
constant condition that is controlled so that it dose not 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: Haley W
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