cells review guide Flashcards
most powerful microscope
electron microscope
what tool/device would a scientist use if they wanted to collect large amounts of a specific cell organelle
ultracentrifuge
why is it important to stain cells before observing them
to enhance visualization of the cell
how can someone stain a living cell
by using specific dyes
list two biological stains
crystal violet and congo red
centrrifuge
separates components of a fluid
how does a centrifuge work
separates liquid by spinning in a container at high speed
if you want to stydy the feeding behavior of a living organism what type of microscope would you use
light - cells can’t survive in the ‘vacuum chamber’ used in electron microscopes
three statements of cell theory
- cells are the basic unit of structure/function in living things
- new cells come before existing cells
- all living cells are made of cells
why is the existence of the first cell an exeption to the cell theory
because there has to be a first for new cells to come from, but cell theory says new cells come from existing cells
why are viruses concidered to be an exception to the cell theory
because they don’t contain any cell organelles
why are mitochondria and chloroplasts an exception to cell theory
because they have their own genetic material and can reproduce independently
list three common features of both plant and animal cells
cell membrane, mitochondria, nucleus
list three characteristics of prokaryotes
unicellular, no nucleus, and no membrane bound organelles
list three characteristics of eukaryotes
multicellular, nucleus, membrane bound organelles
