cells + cells transport Flashcards
what prokayotic cell contains
cell wall made of murein
- cell membrane
- cicular DNA
- ribosomes
- cytoplasm
nucleus
has genetic material
control protein synthesis
ribsomes
made of protein and rRNA
protein synthesis
endoplasmic reticulum
rough - ribosomes / secret protein
smooth - no ribosomes/ production and transport of lipid
golgi apprantus
add carbs to protein
packages protein
produce lysosomes
lysosomes
sacs of hydrolytic enzymes
engulf and digest by phagosytosis
centrioles
spindle made of microtubles
control seperation of together chroomosomes
mitrochondria
involve aerobic respiration produces ATP
chloroplast
site of phytosynthesis
cell wall
provide strength and support the shape
cell wall of algae
cellulose and glycoprotein
cell wall of fungi
chitin and glycoprotein
tissuse
group of similar cells
organ
different tissuse
system
2 or more organs
epithial cells
folded into microvilii - large SA
Lots of mitrochondira providing energy in term of ATP
3 condition of cell fractionation
isotonic - so no osmotic movement
low temperture or ice cold - prevents the action of enzyme
buffer- maintains PH
order of organelles that are seperated
nuclei
chlooplast
mitrochondria
endoplasic reticlum
ribosomes
elctron microscope
shorter wavelength
greater resoulation
difference between light and electron microscope
- ligt uses light whereas electron uses elcron beams
- light uses lower resolution wheras elecron is greater
- light produces image in colour as elctron don’t
- light shows simple and quick + easy to prapare
difference in TEM and SEM
- TEM has a higher resolution than SEM
- TEM produces internal images whereas SEM produces external only
- TEM give 2D as SEM produces 3D
- TEM must be thin as SEM can by thick
cell membranes structure
- hydrophilic heads
- hydrophobic tail
- cholesrtol - strength, restricts movements
- carrier protein- facilited diffusion and active transport
- channel protein- faciited diffusion
- glycoprotein and gycolipid
diffusion
is a net movement from high to low concentration
passive
facilieted diffusion
involves channel and carrier
passive
active transoport
the movemnet from low to high concentration in partialy permerable membrane
- uses ATP
- attatch carrier and channel protein
factors effector: temperture, oxygn, inhabitors
osmosis
is the net movement of water from a high water potentail to low water potential
osmosis
is the net movement of water from a high water potentail to low water potential
