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Biology-1010 | Chapter 1
Chapter 1: Learning about Life
Terms in this set (23)
an assertion based on a single or just a few examples. It is not considered valid proof of a generalized conclusion.
the scientific study of life
the global ecosystem, the entire portion of earth inhabited by life; all of life where it lives.
in a controlled experiment, a set of subjects that lacks (or does not receive) the specific factor being tested. ideally, should be identical to the experimental group in all other respects.
a component of the process of science whereby a scientist carries out 2 parallel tests, an experimental test & a control test.
recorded verifiable observations
a factor whose value is a measure in an experiment to see whether it is influenced by changes in another factor
a scientific experiment in which some info is withheld from both the test subject and the experimenter. It is meant to eliminate bias on both parties.
descent with modification; the idea that living species are descendants of ancestral species that were different from present-day ones; also defined more narrowly as the change in the genetic composition of a population from generation to generation. Central unifying theme in Biology.
A scientific test, often carried out under controlled conditions; that involves changing one factor(variable) at a time
a set of subjects that has (or receives) the specific factor being tested in a controlled experiment. ideally, the experimental group should be identical to the control group for all other factors.
a piece of information that is correct based on all current information. not subject to opinion.
a unit of inheritance in DNA (or RNA in some viruses) consisting of a specific nucleotide sequence that programs the amino acid sequence of a polypeptide.
a tentative explanation that a scientist proposes for a specific phenomenon that has been observed
a factor whose value is manipulated or changed during an experiment to reveal possible effects on another factor (dependent variable)
a process in which individuals with certain inherited traits are more likely to survive, reproduce than are individuals that do not have those traits.
the evaluation of scientific work by impartial, often anonymous, experts in that same field. Considered a good means of recognizing valid scientific sources.
a harmless but ineffective procedure or treatment that is given purely for psychological reasons or to act as a control in a blind experiment.
a field of study that is falsely presented or mistakenly regarded as having a scientific basis when it does not.
any method of learning about the natural world that follows the scientific method
a scientific experiment in which some information is withheld from the test subject
a widely accepted explanatory idea that is broader in scope than a hypothesis, generates new hypotheses, and is supported by a large body of evidence.
a factor or condition of an experiment that has been changed, often while keeping all other factors of the experiment consistent
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