Cell Biology Flashcards
what is the function of the nucles
controles the activty of the cell and holds the dna
function of the cytoplasm
where chemical reactions take place
function of the cell membrane
controles what gose in and out of the cell
function of the mitochondria
structure in the cytoplasm where energy is produced
fucntion of the ribonmes
where protines are made
function of the cell wall
protective layer which supports the cell
function of the cellulose
a carbohydrate makes the cell wall of plants
function of the vacuole
a fluid - filed cavity used for storage
function of the chloroplast
contains chlorophyll found in plants
what is a prokaryotic cell
organisms without a nucleus or organelles
what is a eukaryotic cell
cells with a nucles and subcelluar orgnells
function of the plasmid
samll cricle of DNA
definition of diffusion
movment of particles from a high concerntration to low concerntration
definition of osmosis
movment of paricals form a high concertration of water to a low concertration through a semi-permuble membrane
definition of active transport
the movment of substances against a concertrated gradient
which sub-cellular controls the activity of the cell
Nucles
where are proteins made
On the ribsonmes
three structures found in plant cells but not animal cells
permant vacuol
cell wall
chloroplast
where is DNA found in a bacterium
plasmid in the cytoplam
What takes place in the mitochondria
aerobic respration
function of the flagella in a bacterial cell
tail - like structure which rotates to allow the bacteria to move
What are the 3 stages of mitosis
1.) DNA replicates
2 .) chromoses split and pull to oposite ends of the cell
3.) 2 genticaly identical daugher cells are made
why is cell division so important
it repairs damaged tissues
where are stem cells found in a human
the bone marrow
what are stems cells function
Stem cells are undiffrated cells which can diffrate into any cell needed and can create new healther cells
what is therapeutic cloning
clones that are produced to treat diseases and will not be allowed to develop into new offspring
What is a chromosome
long molecule found in the nucles
what is DNA
contains your gentic Matirial
how many chromes are in a human cell
46 (23 pairs)
