Topics 1-3 Flashcards
(28 cards)
cell membrane?
holds the parts of a cell together
cell wall
the outer part of a plant cell
harder then membrane
Mitochondria
the powerhouse of the cell
powers the cell
Cytoplasm
fills the cell and keeps everything in place
vacuole
storage bin
nucleus
controls everything in the cell, like the brain
chloroplast
converts light into sugar
6 things that all living things must have
- produce waste
- grow/ develop
- reproduce
- need energy
- adaptations
- made of cells
Cell theory
cells are the basic unit of life; all cells come from existing cells
who is Leewenhoek
1st person to discover single-cell organisms
who is Hooke
named the world ‘cell’
who are Schwann and shleiden
discovered cell theory
who is Virchow
tied lose ends of cell theory
what is a compound microscope
2,000x
magnification levels
eyepiece - 10x
low - 4x
mid - 10x
high - 40x
how to calculate the field of view on a microscope
eyepiece x objective lense
Arm
side of microscope; where its carried
coarse adjustment knob
move the stage up and down to get the specimen into view
fine adjustment knob
moves the stage slightly to get the specimen into focus
eyepiece
allows you to view image
light / mirror
projects light onto the specimen so you can see it
nosepiece
changes magnification; hold the objective lens in place
objective lens
ranges from high to low power
body
concets the eyepiece to the objective lens
