Chapter 4 : Microscopy Flashcards
1 meter =
1.meter
1 decimeter =
1/10th of a meter
.1
1 centimeter =
1/100th of a meter
.01
1 millimeter =
1/1000th of a meter
.001
1 micrometer =
1/1,000,000 (millionth) of a meter
.000001
1 nanometer =
1/1,000,000,000 (billionth) of a meter
.000000001
Typical cell size
Eukaryotic animal (10-30um) Eukaryotic plant (10-100um)
Lower and upper limits of a cell
Lower: large enough to house DNA, proteins, and structures needed to survive and reproduce
Upper: Remain small enough to allow for a surface-to-volume ratio that will allow adequate exchange with the environment
Cell size is limited by
The surface to volume ratio
Cytolysis
Which can lead to the cell rupturing
Benefits of modulated cells
A highly modulated surface can greatly increase the surface area of a cell without increasing the total cell volume