14 terms

Intro. to Biology

Ch. 1: Biology: A Guide to the Natural World by David Krough
a branch of stidy concerned with the observation and classification of facts
Scientific Method
an orderly step by step method of problem solving
The 7 steps of the Scientific Method are:
-define the problem
-collect information about the problem
-form a hypothesis
-observe & collect data
-draw a conclusion
-report results
Levels of Development of living things:
-chemical: atoms & molecules
-cellular: cells
-tissue: group of cells working together
-organ: group of tissues working together
-organ system: group of organs working together
-complex organism: organ systems working together
Characteristics of living things:
-growth & development
the living material composed of complex chemical compounds that react with each other in a special way only in living things
ability to do work; life is in a state of constant chemical activity, a constant supply of energy is necessary to support that chemical energy
our surroundings
responsiveness / irritability
reaction to a stimulus
ability of an organism to adjust to the environment in order to live
growth & development
a series of changes from beginning to maturity
the sum total of all chemical activity essential to life
continuation of the species
the ability to maintain a balance by means of self-regulatory adjustments under constant changing conditions both internal and external