The Cell

the smallest working unit of a living organism

cell membrane cytoplasm nucleus mitochondria ribosome

cell wall large vacuole chloroplast (contains chlorophyll)

allows substances in and out

watery fluid in which organelles float

contains DNA that controls the cell

where energy is released in respiration

where proteins are made

gives support and protection

stores food, water and waste

photosynthesis (contains green pigment chlorophyll )

magnify very small structures to see them more clearly and study them

for looking through

to magnify (the 3 things)

where to place the slide

to adjust focus roughly/ accurately

adjust the amount of light coming through the stage (right under the stage)

• light on, low power obj lens on • adjust iris diaphragm • place slide and raise stage • focus w coarse/ fine focus knob

very thin sample placed on slide, drop stain, cover slip at angle gently to eliminate air bubbles

iodine (starchy)

methylene blue