displays movement

takes in and releases energy

grows/ responds to stimuli

Adapts to changes in its environment

made of subassmeblies/ evolves

reproduces by giving genetic material to its offspring

Accretion

Two-main scientific approaches

discovery

hypothesis-driven

Hypothesis properties

possible cause

specific

reflect past experience with similar questions

must be testable through experimentation

may be accepted, rejected, or revised--never proven

Scientific Inquiry Procedure

Observation

question

hypothesis

prediction

test

*repeat if neccessary*

(1668)

designed an experiment to disprove spontaneous generation

scientific conferences

research seminars

publications

very specific scientifiv publications

journals

periodicals

summaries of scientific discoveries in layman's terms.

Newspapers

Time Magazine

National Geographic

Observations and measurements that others can verify

Ideas (hypotheses) are testable by experiments that others can repeat

A comprehensive explanation

Broad in scope

Supported by abundant evidence

Jan and Zacharias Janssen

(1590)

Invented the microscope--used bits of curved glass

Robert Hooke

(1663)

curator of experiements for the Royal Society of London

Altered design so that light went through specimen instead of reflecting from it/ used cork

Often credited for being the first guy to use "cell"

Anton van Leeuwenhoek

(1675-1680)

Danish merchant who used microscope to observe water samples, eggs, sperms, etc.

Used term "animalcules" to describe bacteria and protists

Matthias Schleiden

(1838)

"plants are made of cells"

Thodore Schwann

(1839)

Rudolf Virchow

(1858)

The cell is the basic unit of structure and function of living things

All living things are composed of cells

Cells arise from preexisting cells

Cytology