exp 2.2 to prepare and examine plant and animal cells Flashcards
how do we obtain a sample of plant cell
use forceps to remove a thin layer of cells between the leaves of an onion
how do we prepare the plant cell slide
place sample onto glass slide
add a few drops of iodine
add a few drops of water
lower coverslip and view under microscope
function of adding iodine to sample of a plant cell
stains the nucleus making it more clear under the microscope
function of adding water to the sample of a plant cell
prevents cells from drying out
what 2 things are added to a sample of a plant cell
iodine + water
how to obtain a sample of an animal cell
swab the inside of your cheek using a cotton bud and smear onto glass slide
how to prepare an animal cell slide
add a few drops of methylene blue
add a few drops of water
lower coverslip and view under the microscope
what 2 substances are added to an animal cell slide
water
methylene blue
why is methylene blue added to an animal cell sample
to stain the nucleus to make it more visible under the microscope
why is water added to an animal cell sample
to prevent cells from drying out
how do you lower the coverslip?
lower slowly at a 45 degree angle
why do we lower the coverslip at an angle
to prevent air bubbles
