chapter 1 (#2) Flashcards
biology
stud of living things
orginisms
living thing
unicellular
1 cell orginism
multi cellular
many cells in orginism
characteristics of living things
Ch. org
8
(made up off cells-reproduce-genetic code-grow and develope-obtain and use energy-respond to their envioment-maintain a stable entornal envioment-change over time)
1 Ch. org
made up of ______
cells. (smallest unit of life)
2 Ch. org
reproduce
asexual reproduction: 1 orginism makes another orginism
sexual reproduction: 2 orginisms make another orginism
3 Ch. org
genetic code
DNA manual
4 Ch. org
grow and _____
develope.
5 Ch. org
get and use energy
take something and break it down into something else you can use.
matabilism
orginsms break down matterials and rebuild them
6 Ch. org
respond to enviorment
responding to change outside of body
stimulis
signal for body to respond to changes
7 Ch. org
maintain a stable intornal enviorment
keep normal temperture (body remp.)
homiostasis
keeping inside conditions the same even when outside changes
8 Ch. org
change over time
to evolve.
evolution- ppl change over time.
level of organization
molecules … cell … tissue … organ … organ system … organism … population … community … ecosystem … biosphere
molecules
group of atoms
ex. O2
cell
smallest unit of life (made up of molecules)
ex. nerve
tissue
may cells together
ex. nerve tissue … organ (brain)
organ system
organs working together
ex. nervouse system
brain + nerve tissue =
nervouse system
orginism
1 living thing
ex. bison/buffulo
population
group of same organism in 1 place
ex. bison herd
community
populations living in 1 place
ex. snakes, bison, dog, grass
