Ch. 1 Review A test which determines the effect of a single variable by changing it while keeping all other variables the same. Controlled Experiment Change in a group of organisms over time. Evolution Logical interpretation based on prior knowledge or experiences. Inference

Ch. 1 Review Use of 1 or more senses to gather data. Observation Factor in an experiment that a scientist purposely changes. Independent Variable Use of 1 or more senses to gather data. Observation 2 types of data which can be gathered through observations/experiments. Qualitative & Quantitative

Ch. 1 Review A hypothesis which has been supported by experimental data. Theory True or False: Theories are set in stone and can NOT be revised. False

Ch. 1 Review The group that receives the Independent Variable Experimental Group The term used to describe the data that is collected through out an experiment. Dependent Variable The parts of the experiment that remains unchanged between the experimental group and control group. Control variables

Ch. 1 Review Smallest unit of an organism that can be considered alive. Cell Organized way of using evidence to learn about the natural world. Science. Signal to which an organism responds. Stimulus

Ch. 1 Review Process by which a single parent reproduces by itself. Asexual Reproduction Mnemonic device to help you recall the “8” characteristics of life. DR. G. CHEER Unspecialized Cells that are not differentiated: Stem Cells

Ch. 1 Review Evidence or information gathered from observations. Data A scientific/educated explanation for a set of observations. Hypothesis Science that seeks to understand the living world. BIOLOGY

Ch. 1 Review A well-tested explanation that unifies a broad range of observations agreed upon by the scientific community. Theory Process by which organisms maintain a relatively stable internal environment. Homeostasis

Ch. 1 Review Group of organisms of one type that live in the same area. Populations Populations that live together in a defined area. Community The part of Earth that contains all ecosystems. Biosphere

Ch. 1 Review List AND Explain the 8 Characteristics of Living Things:

Characteristics of Living Things LIVING THINGS SHARE THE FOLLOWING 8 CHARACTERISTICS: 1.) Living things are made up of units called cells. 2.) Living things reproduce. (two types) 3.) Living things are based on a genetic code (DNA). 4.) Living things develop and grow. 5.) Living things obtain and use materials and energy. 6.) Living things respond to their environment. 7.) Living things maintain a stable internal environment. (Homeostasis) 8.) As a group living things change over time (Evolve) DR. G. CHEER