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Chapter 1 (1.1,1.2)

Vocab Review

TermDefinition
Biosphere All organisms and the part of Earth where they exist.
Biodiversity variety of life within an area
species A group of organisms so similar to one another that they can breed and produce fertile offspring
biology scientific study of all forms of life
science the knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principals that can be verified or tested.
organism any individual living thing
cell basic unit of life
metabolism All chemical processes that synthesize or break down materials within an organism
DNA A hereditary material in humans and almosty all other organisms
system Changing, organized group of related parts that interact to form a whole.
ecosystem collection of organisms and nonliving things , such as climate, soil, water, and rocks in an area.
homeostasis A regulation and maintenance of constant internal conditions in an organism.
evolution A change in a species over time; process of biological change by which decedents come to differ from their ancestors
adaptation inherited trait that is selected for over time because it allows organisms to better survive in their environment.
observation using the senses to study the world; using tools to collect measurements; examining previous research results
data observations and measurements recorded during an experiment
hypothesis A proposed explanation or answer to a scientific question
experiment A process that tests a hypothesis by collecting information under controlled conditions
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 does not change during an experiment
theory Proposes explanation for a wide variety of observations
Created by: BinggeliE25
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