Chapter 1 The Science of Life

35437084	biology	the study of life
35437085	organization	the high degree of order within an organism's internal and external parts and in its interactions with the living world
35437086	cell	in biology, the smallest unit that can perform all life processes; _______ are covered by a membrane and contain DNA and cytoplasm
35437087	unicellular	describes an organism that consists of a single cell
35437088	multicellular	describes a tissue, organ, or organism that is made of many cells
35437089	organ	a collection of tissues that carry out a specialized function of the body
35437090	tissue	a collection of specialized cells and cell products that perform a specific function
35437091	organelle	one of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function
35437092	biological molecule	chemical compound that provides physical structure and brings about movement, energy use, and other cellular functions
35437093	homeostasis	the steady-state physiological condition of the body
35437094	metabolism	the sum of all chemical processes that occur in an organism
35437095	cell division	the formation of two cells from one existing cell
35437096	development	the gene-directed process by which an organism matures
35437097	reproduction	the process of producing offspring
35437098	gene	a short segment of DNA that contains the instructions for a single trait
35437099	domain	in a modern taxonomic system, the broadest category; the category that contains kingdoms
35437100	kingdom	in a tradtitional taxonomic system, the highest taxonomic category, which conatins a group of similar phyla
35437101	ecology	the study of the interactions between organisms and the other living and nonliving components of their environment
35437102	ecosystem	a community of organisms and their abiotic environment
35437103	evolution	a heritable change in the characteristics within a population from one generation to the next; the development of new types of organisms from pre-existing types of organisms over time
35437104	natural selection	the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do; a theory to explain the mechanism of evolution
35437105	adaptation	the process of becoming adapted to an environment; an
35437106	scientific method	the series of steps followed to solve problems, including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions
35437107	observation	the process of obtaining information by using the senses; the information obtained by using the senses
35437108	hypothesis	in science, an idea or explanation that is based on observations and that can be tested
35437109	prediction	a statement made in advance that expresses the results that will be obatined from testing a hypothesis if the hypothesis is supported; the expected outcome if a hypothesis is accurate
35437110	experiment	a procedure that is carried out under controlled conditions to discover, demonstrate, or test a fact, theory or general truth
35437111	control group	in an experiment, a group that serves as a standard of comparison with another group to which the control gorup is identical except for one factor
35437112	experimental group	in an experiment, a group that is identical to a control group except for one factor and that is compared with the control group
35437113	independent variable	in an experiment, the factor that is deliberately manipulated
35437114	theory	an explanation for some phenomenon that is based on observation, experimentation, and reasoning; that is supported by a large quantity of evidence; and that does not conflict with any existing experimental results or observations
35437115	peer review- collaboration	the process in which experts in a given field examine the results and conclusions of a scientist's study before that study is accepted for publication