chapter 1 biology exam

science

uses evidence to construct testable explanations and predictions of natural phenomena

observation

the act of noticing and describing events or processes in a careful and orderly way

inference

A logical interpretation based on what a scientist already knows

hypothesis

A scientific explanation for a set of observations that can be tested in ways that support or reject it

controlled experiment

A test of a hypothesis in which only one variable is changed at a time, all others are left the same

independent variable

a variable that the scientist changes

dependent variable

a variable that changes due to the independent variable

control group

a group within an experiment that is exposed to the same conditions except for the changes by the scientist, "testing group"

qualitative data

data descriptive with characteristics

theory

a thought out explanation for observations made

bias

a particular based off of a personal opinion

biology

the study of life

stimulus

any signal in the environment that an organism responds to

cell

the basic unit of structure in all living organisms

DNA

a chemical used by all organisms to store information an organism needs to live, grow and reproduce

sexual reproduction

a method of offspring production by 2 different parents

asexual reproduction

a method of offspring production by one organism

metabolism

the combination of chemical reactions that occur in an organism when they build up or break down material as they utilize energy to grow, develop and reproduce

heredity

The passing of information for traits from one generation of organisms to the next generation

homeostasis

The condition that occurs when an organism keeps their internal environment relatively stable even when external conditions change dramatically

biosphere

all forms of life on earth

evolution

Changes that occur in a group of organisms over time

quantitative data

date specific to numbers

what are the goals of science

components of a scientific methodology

observation, ask questions, hypothesis, experiment, collect data, analyze data, review

independent variable vs. dependent variable

independent variable is the cause and dependent variable is the outcome due to the cause of the independent variable

what is the purpose of a control

to use as comparison in the testing process

hypothesis vs theory

a hypothesis is an assumption before research and a theory is a principle used to explain the data found in research

what are 4 mind habits useful for science

curiosity, skepticism, creativity, and openmindedness

can a theory ever be accepted as proven

what makes science self correcting

the tests prove themselves through experiments

miss

motion, ingestion, secretion, and sensitivity

Redcar

respiration, excretion, digestion, circulation, assimilation, reproduction

MACHI

metabolism, adaptions, cells, homeostasis, information

what system of measurement is used by scientists

metric system