7.1 Life is Cellular Flashcards
1
Q
Who first saw cells in 1665 and coined the term cells?
A
Robert Hooke
2
Q
How do most microscopes use lenses to magnify the image of an object?
A
by focusing light or electrons
3
Q
About how many times can a light microscope magnify by?
A
100x
4
Q
How do we see clear cells in light microscopes?
A
use stains
5
Q
How small of objects can we see with an electron microscope?
A
things 1 billionth of a meter
6
Q
What are the 2 types of electron microscopes?
A
transmission and scanning
7
Q
What 2 things do all cells have?
A
DNA and a cell membrane
8
Q
prokaryotes are often
A
smaller and simpler than eukaryotes (ex: bacteria)
9
Q
Eukaryotes are often:
A
highly specialized, more complex, (protists are unicellular eukarytoes)
