Biology 10 Review Flashcards
Specimen
The object that you are looking at under a microscope
Magnification
How many times larger a microscope makes an object appear
Compound Microscope
Uses light to magnify specimen
Can magnify 400 to 1000 times
Invented by Anton van Leevwenhoek
Electron Microscope
First invented in 1932
Uses beams of electrons to magnify a specimen
Can magnify up to 600,000 times
Scanning Electron Microscope (SEM)
Beam of electrons scans over the specimen
3D image is projected onto computer
Can be used with loving specimen
Transmitting Electron Microscope (TEM)
Beam of electrons passing through a slice of specimen
Can see inside of specimen
Good for detailed observations
Specimen must be dead
Cells
Made up of organelles (tiny organisms)
Cell Membrane
Outer part of cell
Certain things can get through
Allows the transportation of materials
In both plants and animals
Cytoplasm
Holds all organelles in place
Dissolves nutrients throughout the cell
In both plants and animals
Mitochondria
Powerhouse of the cell
Converts food into energy for our body
Endoplasmic Reticulum (ER)
Long system of tubes
provides for intracellular transport for molecules (transportation within cell)
What are the 2 types of Endoplasmic Reticulum (ER)?
Smooth ER
Rough ER
Rough ER
has ribosomes attached to it. ribosome produce protein
Smooth ER
no ribosomes attached. producers lipids (fats)
Golgi Apparatus
Received materials and nutrients from ER and transports to cell
Beside ER
