lecture 1 Flashcards
(27 cards)
study of life
biology
hierarchy of life organization from smallest to largest
atom, molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere
what are the five characteristics that determines life
cells, reproduction, evolution, information processing, energy processing
organisms are made of _____ units called ___
membrane-bound, cells
organisms acquire energy and use it to power ______
metabollic processes
three scientific theories
cell theory, theory of evolution by natural selection, chromosome theory of inheritance
and explanation broad i explanatory scope
theory
explanation supported by scientific evidence
theory
series of steps used to gather knowledge
scientific method
a systematic way of gatheirng knowledge and organizng it into theories and laws
science
a testable statement that may be rejected or sipported
hypothesis
meausrable results that you expect to see from an experiment based on hypothesis
prediction
if ….. then… statements
prediction
capable of yielding data that may or may not match the prediction
experiments
all organisms are made of cells and all cells comr from pre existing cells
cell theory
what separates internal from the external environment of a cell
cell membrane
this allows the cell to regulate what enters ad exit
cell membrane
can store and transmit information
cell
two types of cells
prokaryotic and eukaryotic
what type of cell have nucleus
eukaryotic
which is smaller; eukaryotic or prokaryotic
prokaryotic
what did pasteur conduct as an experiment to test cell theory
pasteur used a swan-necked flask, boiled a nutrient broth, and preexisting cells from air are trapped in swan neck
cell theory supports two of the five characteristics of life. what are those
cells and reproduction
who published the theory of evolution by natural selection
charles darwin and alfred russel wallace
