Details Title: 1.1A Intro to Biology Description: Study cards for lessons about: Scientific Method, Experimental Design, and Homeostasis Total Flash Cards: 19 Created: 02/13/2008 13:18:21		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Biology Flashcards
Cards in this set: Term Section 1.1A Intro to Biology           Control Group  Definition Section 1.1A Intro to Biology      In an experiment, it is the group closely resembling the experimental group in many demographic variables but not receiving the factor being tested and thereby serving as a comparison group when results are evaluated.         Term Section 1.1A Intro to Biology           Dependent Variable Definition Section 1.1A Intro to Biology     It is the event studied in an experiment and it is expected to change when the independent variable is changed.     Term Section 1.1A Intro to Biology            Experiment Definition Section 1.1A Intro to Biology       It is the scientific approach to testing a hypothesis. Term Section 1.1A Intro to Biology           Independent Variable    Definition Section 1.1A Intro to Biology       It is the manipulated variable in an experiment; its presence determines the change in the dependent variable. Term Section 1.1A Intro to Biology         Hypothesis Definition Section 1.1A Intro to Biology       A tentative explanation or educated guess about a problem. Term  Section 1.1A Intro to Biology           Experimental Group  Definition Section 1.1A Intro to Biology       The group of subjects that are exposed to the variable in a control experiment. Term Section 1.1A Intro to Biology           Control  Definition Section 1.1A Intro to Biology       A standard against which results of an experiment are compared to. Term Section 1.1A Intro to Biology           Procedure  Definition Section 1.1A Intro to Biology         A series of steps taken to carry out an experiment. Term Section 1.1A Intro to Biology           Reliability  Definition Section 1.1A Intro to Biology         Yielding the same or compatible results in different experimental trials Term Section 1.1A Intro to Biology           Sample size  Definition Section 1.1A Intro to Biology      A concept in probability theory which considers all possible outcomes of an experiment, game, and so on, as points in a space. Term Section 1.1A Intro to Biology           Scientific Method  Definition Section 1.1A Intro to Biology         A methodical approach to designing and conducting an experiment Term Section 1.1A Intro to Biology           Theory  Definition Section 1.1A Intro to Biology       A major hypothesis that is accepted by the scientific community because it has repeatedly survived several tests. Term Section 1.1A Intro to Biology           Validity  Definition Section 1.1A Intro to Biology         Correctly inferred or deduced from a premise Term Section 1.1A Intro to Biology           Homeostasis  Definition Section 1.1A Intro to Biology       It is the maintenance of normal internal conditions by means of self-regulatory mechanisms. Term Section 1.1A Intro to Biology           The Negative Feedback Loop:  Definition Section 1.1A Intro to Biology     homeostasis stimulus sensor/receptor control/regulator centre effector Term Section 1.1A Intro to Biology           Stimulus  Definition Section 1.1A Intro to Biology         It is a change from normal conditions. Term Section 1.1A Intro to Biology           Self-regulatory mechanisms  Definition Section 1.1A Intro to Biology         They work by negative feedback; Homeostasis occurs through these means. Term Section 1.1A Intro to Biology           Positive feedback  Definition Section 1.1A Intro to Biology         Causes an ever lasting change in the same direction. It is only used in situations that occur intermittently. Term Section 1.1A Intro to Biology           Negative feedback  Definition Section 1.1A Intro to Biology         Causes a reduction of output of a system