Flashcards in Chap 4 -1 Deck (15)
What are light microscopes made of and how much do they magnify?
glass lenses/ light source
What are light microscopes used for?
single cell movements, habits
What are electron microscopes made of?
tungsten filament and magnetic lenses
What are the two types of electron microscopes?
SEM scans surface 100,000x
TEM transmission, internal strutures 200,000x
What are the two main types of cells?
Prokaryotes & Eukaryotes
Which type of microscope can see DNA?
What do cells have in common?
DNA w/in a region
What are prokaryotes?
small 1 um
great metabolic diversity
Prokaryotes domain bacteria can live?
Prokaryotes domain archaea can live?
only in extreme conditions (hot springs, dead sea, in animals)
What are the different shapes of prokaryotes?
What are biofilms?
Where is DNA located in prokaryote cells?
a nucleoid region
What is within DNA?
genes - code for RNA, protein