Cell Membranes Flashcards
Cell membrane
Allows substances to pass in and out of the cell.
Cytoplasm
Watery fluid that gives support to the cell.
Nucleus
Controls the cell activities.
Vacuole
(Larger and permanent in plants) storage of food , water , wastes.
Cell wall
(Only in plant cell) gives strength to the cell.
Chloroplasts
(Only in plants cell) contains chlorophyll to help make food.
Base
Keeps the microscope stable.
Stage and stage clips
Hold the slide in place
Light source
A built in light bulb or mirror that lights up the specimen
Diaphgram
Controls the amount of light passing through the specimen
Objective lens
Magnifies the specimen by different factors (x4 x10 x40)
Eyepiece lens
Magnifies the specimen, usually by a factor of 10(x10)
Coarse focus wheel
Rings the image into rough focus
Fine focus wheel
Brings the image into sharp focus.
Electron microscope
Used to study things in more detail . A beam of electrons is passed through a specimen .
Micrograph
An image formed when using an electron microscope
Mitochondria and ribosomes
Can be seen with and electron microscope, but cannot be seen with light microscope.
Organelle
Structure in a cell that carries out particular role
Cell
Made up of organelles, different cell do different jobs
Tissue
Groups of cells that work together E.g blood is made of red and white blood cells , plasma and platelets
Organ
Group of tissues that work together
System
Group of tissues that work together
Organism
An individual that has many systems that work together
