what is life? Flashcards
the science of “life”/study of living things
biology
a living thing
organism
get energy by consuming other organisms
heterotroph
use energy from sunlight or chemicals to make their own food
Autotroph
“living things”
Biotic factors
“non living things”
Abiotic factors
the smallest functional and structural unit of all living things
cell
signal to which an organism responds
stimulus/stimuli
cell work to keep conditions inside the cell constant and in balance
Homeostasis
cells that do have a nucleus and membrane bound
Eukaryote/eukaryotic cell
non living infections agent
Virus
Characteristics of life
1.made of cells
2.reproduce
3.share a universal genetic code
4.take in minerals and use energy
5.respond to their environment
6.grow and develop
7.change over time
what is the difference in unicellular and multicellular organisms?
unicellular are made up of only one cell to function, while multicellular uses multiple cells to function.
what is the difference in sexual and asexual reproduction?
sexual needs 2 parents, asexual only needs 1
why is evolution of species important
it is the process through which organisms adapt and change over time in response to their environment
how do multicellular organisms grow bigger
they grow individually and then divide
why can cells not just grow larger and larger with no limit
if they get to big they won’t be able to get nutrients
what things do all cells have in common
cell membrane, cytoplasm, organelles, DNA
what are the 2(3) parts to all viruses
DNA or RNA, capsid, protein coat
how do viruses and cells differ
one has organelles and cytoplasm and one dont
are viruses living
no they do not meet all the characteristics of life
