22 terms

Science 8 - Cells and Systems

STUDY
PLAY
Compound Microscope
an optical device that uses 2 or more lenses to observe small objects.
Eyepiece
the top lens attached to the tube, also known as the ocular lens. Typically 10X
Cell
Basic unit of life
Cell Membrane
the outer layer of a cell that surrounds and protects the contents of the cell
Cell Wall
A rigid frame-like covering surrounding a plant cell
Cytoplasm
the liquid inside a cell
Nucleus
controls the cell and its activities
Vacuoles
membrane-bound sacs that store food, waste and other substances in a cell
Chloroplast
green structures in plant cells where photosynthesis takes place
Mitochondria
the powerhouse of a cell that converts energy into use-able forms
unicellular
an organism that is made of only one cell
multicellular
an organism made up of multiple cells that work together
osmosis
the movement of water from areas of high concentration to areas of low concentration
heart
main organ of the circulatory system
lungs
main organ of the respiratory system
stomach
main organ of the digestive system
objective lens
the primary optical lenses on a microscope ranging from 4X-40X
revolving nosepiece
part of the microsope where the objective lenses are attached
stage
part of the microsope where the slides are placed
coarse adjustment knob
the rough focus, typically able to focus the slide in low power
fine adjustment knob
the detailed focus, typically needed to focus the slide in medium and high power
diaphragm
the light adjustment of the microscope that limits the amount of light that hits the slide.
YOU MIGHT ALSO LIKE...