Diversity Lab Practical
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what distinguishes Archae from Diplomonads?
Diplomonads have membrane-bound nuclues, Archaea don't
What do chitin and cellulose have in common?
both are primarily composed of glucose
In the electrophoresis lab, what was the independent variable?
the pH of the buffer used to prepare the gels
What is the isoelectric point of a protein?
the pH at which the protein will not migrate in an electrical field.
If the isoelectric point of a protein is higher than the pH, what happens?
the protein will have a net positive charge
What microscope is best for viewing the surface features of an insect that is 10mm in length?
the Leica 2000 stereomicroscope
Which part of the Nikon microscope should not be adjusted with the 40X objective in place?
Course focus knob
What was the purpose of the iodine in the microscopy lab?
Stained some cell parts more intensely than others, creating contrast between the parts.
In the permeability lab, what was the dependent variable?
In the permeability lab, what were the independent variables?
Size, charge, and lipid solubility
In the electrophoresis lab, what was the dependent variable?
the distance each protein migrated in an electric field
What was the measure of permeability used in lab?
the time required to reach one-half maximum transparency after injecting the solution
What is magnification?
making things appear larger
What is resolution?
being able to distinguish 2 objects
What is contrast?
different parts of an object absorb or transmit amounts of light
What do you do to calibrate a spec 20?
put a blank slide in turn the left knob so it reads 0. then turn the right knob so it reads 100.
What distinguishes prokaryotes from eukaryotes?
they don't have a nuclues, cytoskeleton, or membrane-bound organelles.
What are the different shapes for the different Bacteria?
- Spherical- cocci
What is the different between autotrophic and heterotrophic?
- autotrophic- feed themselves
- heterotrophic- feed on other things
What are the 3 main divisions of fungi?
Zygomycota, Basidiomycota,and Ascomycota
What would you like to do?
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