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S1 Unit 3 Flashcards
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18
Biology
Not Applicable
11/02/2011

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Term
vacuole
Definition
contains a liquid called cell sap that keeps the cell firm
Term
chloroplast
Definition
contains a green substance called chrolophyll to trap light for photosynthesis
Term
iodine
Definition
a stain added to onion cells to make their parts stand out under the microscope
Term
Ear drum and small ear bones
Definition
Passes on vibrations to cochlea
Term
cochlea
Definition
changes vibrations into nerve impulses
Term
methylene blue
Definition
a stain added to cheek cells to make their parts stand out under the microscope
Term
Sperm
Definition
cell specialsed to swim to egg and join with it
Term
Red Blood cell
Definition
cell specialsed for carrying oxygen
Term
Lens
Definition
focuses image onto retina
Term
Iris
Definition
changes the size of the pupil light to let in more or less light
Term
Retina
Definition
changes light into nerve impulses
Term
Cornea
Definition
protect the eye and helps focus light.
Term
Pupil
Definition
allows light to enter the eye
Term
Optic nerve
Definition
carrys nerve impulses from retina to the brain.
Term
shape = convex
Definition
shape of lens in the eye
Term
cellulose
Definition
material that the cell wall is made of
Term
convex
Definition
lens that makes rays of light bend IN
Term
concave
Definition
lens that makes rays of light bend OUT
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