What is the simplest collection of matter that can be alive?
A Cell
Who discovered the cell wall in 1665?
Robert Hooke
What type of microscope focuses beams of electrons through the specimen to view organelles?
Electron Microscope
What type of microscope scans the surface of a specimen to study its topography?
Scanning Electron Microscope
What is an organelle?
membrane enclosed structures in eukaryotic structure
What are the 3 important parameters in microscopy?
1. Magnification
2. Resolution
3. Contrast
What type of microscopy sends visible light through specimen while the lenses refract light making specimen bigger?
Light microscopy
What type of microscopy studies the internal structure of cells by aiming electron beams through a thin section of specimen?
Transmission Electron Microscopy
What is cytology?
the study of cell structure
Compare/ Contrast Electron Microscopy and Light Microscopy
Electron Microscopy kills the specimen but it gets a better picture
Light Microscopy keeps the specimen alive but is not as good of a picture
What is cell fractionation and how is it done?
it is the separation of cell organelles
done by spinning the specimen
(slow=big parts, fast=little parts)
What is the difference/similarities of prokaryotes and eukaryotes?
Eukaryotes
-DNA in nucleus
-membrane inclosed
-bigger
Prokaryotes
-DNA in nucleoid
-Smaller
Both
-bounded by selective barrier
-DNA
-Ribosomes
-semifluid cytosol
What are the two types of cells?
1. Prokaryotes
2. Eukaryotes
Bacteria and Archaea are what type of cell?
Prokaryotic
Plants, Animals, protisits, and fungi are what type of cell?
Eukaryotic
Why are eukaryotes bigger tha prokaryotes?
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