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cells and organisation (microscopes (electron (increased/higher…
cells and organisation
cells
animal cells
cytoplasm
where chemical reactions take place
nucleus
contains genetic material , including DNA
cell membrane
controls movement of substances in and out of the cell
mitochondria
where respiration takes place
ribosomes
where protein synthesis takes place
plant cells
as well as all the other components of an animal cell it also has...
chloroplast
where photosynthesis takes place
cell wall
strengths and supports the cell
vacuole
filled with sap to keep cell firm and rigid
microscopes
electron
increased/higher magnification
costs millions
higher resolution
specimen put under it has to be dead
light
cheaper
smaller
specimen can be alive
calculating
image size=actual sizexmagnification
movement
osmosis
movement of water from a high concentration to a low concentration
through a permeable membrane
diffusion
movement of gas and solute particles
from high concentration to low concentration
active transport
movement of substances from a low to high concentration
through a cell membrane
there fore needing energy
against concentration gradient
prokaryotic and eukaryotic cells
prokaryotic cells
bacteria cell
single celled
cell wall (most)
no nucleus
membrane bound
eukaryotic cells
fungal cells
plant/animal
made of many cells
cell wall (some)
more complex
larger