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