cytoplasm
gelatinous, always in motion
moves oxygen and nutrients around cell
holds organelles in place
cell membrane
surrounds and protects cell
helps control what enter/exit cell
nucleus
vacuole
directs cell activities
balloon-like spaces = storage
contains chromosomes with genes
(growth and reproduce cells)
nutrients, wastes, other substances
surrounded by nuclear membrane =
control entry/exit substances in nucleus
mitochondria
absorb nutrients to produce energy for
cell’s activities (respiration)
cytoplasm
gelatinous, always in motion
moves oxygen and nutrients around cell
holds organelles in place
endoplasmic reticulum
folded canals move substances into and
out of cell (transport)
cell membrane
surrounds and protects cell
helps control what enter/exit cell
nucleus
vacuole
directs cell activities
balloon-like spaces = storage
contains chromosomes with genes
(growth and reproduce cells)
nutrients, wastes, other substances
surrounded by nuclear membrane =
control entry/exit substances in nucleus
mitochondria
endoplasmic reticulum
absorb nutrients to produce energy for
cell’s activities (respiration)
folded canals move substances into and
out of cell (transport)
chloroplasts (only plants)
cell wall (only plants)
used in photosynthesis
thick, rigid wall of cellulose
contains chlorophyll to absorb energy
from sun and uses to make sugar and
carbon dioxide
support for cell on outside of membrane
arm
pointer
connects base to body
line used to identify specific area
course-focus knob
brings object into rough focus
stage
holds the slide
opening in center = light
base
Fine-focus knob
supports microscope
brings image into sharp focus
(it’s all about the base)
use after course-focus
revolving nosepiece
eyepiece
revolving disk holds objective lenses of
different strength
part look through
objective lens
magnify object
most light microscopes = 4x, or 10x (#
times object enlarged)
most = 10x lens
objective lens
magnify object
most light microscopes = 10x or 40x (#
times object enlarged)
condenser
directs light to slide
stage clips
a diaphragm controls amount light
through
hold slide in place on stage
objective lens
magnify object
light source
most light microscopes = 40x or 100x (#
times object enlarged)
illuminates specimen