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MIP 300 Final Exam with Questions and Verified Answers |Graded A+
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MIP 300 Final Exam with Questions andVerified Answers |Graded A+
(True/False)
Protozoa are considered "transitional" organisms because they may not contaon all
the usual membrane-bound organelles you would expect to find in a eukaryotic cell -
✔✔True
You just landed a position as a Graduate Teaching Assistant in a microbiology laboratory
class and are grading laboratory notebooks. How would you grade this student's lab
book entry?
Streptococus Pyogenes - ✔✔Incorrect, because the species name should be lower
case and because the student forgot to underline or italicize genus and species names
What kingdom are viruses classified in? - ✔✔Monera, Virilae, Fungi, Anamalia
None of the above (CORRECT)- viruses are not classified in either the kingdom or the
domain systems
You have the opportunity to purchase a new microscope. Which of the scopes listed
below, all of which cost $2,000, will you get the most powerful microscope for you
money? - ✔✔Resolving power= 1mm
Resolving power= 4um
Resolving power= 1um
,Resolving power=0.4um (CORRECT)- this microscope will allow you to see the smallest
specimen, so it has the best resolving power
Resolvingpower=0.4mm
You perform an acid-fast stain on Mycobacterium tuberculosis are realize at the end
that you forgot to use heat/ What color will the cells be? - ✔✔Colorless- heat is
needed to drive the pink stain(or any stain) past the mycolic acid layer. Without
heat, the primary pink stain will not penetrate and the cell will remain clear
You discover a new bacterium. Its cell envelope shows high concentrations of
phosphatidylethanolmine and another type of phospholipid that is associated with long
polysaccharide chains of unusual sugars. This organism is likely? - ✔✔Gram-negative
Species can be broken down even further. What are different groupings within
species called in dogs? - ✔✔Breeds
Species can be broken down even further. What are different groupings within
species called in cats? - ✔✔Breeds
Bacterial axial filament stains will stain the cell - ✔✔
Bacterial flagella stains will stain the cell - ✔✔external to the cell wall
In eukaryotic cells, the function of ribosomes is - ✔✔protein production
In bacteria, the function of ribosomes is - ✔✔protein production
,Which of the following types of microscope will allow you to visualize FITC- labeled
stained viruses that are infecting a cell - ✔✔Fluorescent
Which of the following types of microscope will allow you to most readily visualize
live bacteria in a water sample without staining? - ✔✔Phase Contrast
Which of the following types of microscope will allow you to visualize viruses inside a
cell? - ✔✔Electron
Species can be broken down even further. What are different groupings within
species called in bacteria? - ✔✔Strains
Species can be broken down even further. What are different groupings within
species called in fungi? - ✔✔Strains
(True/False)
Viruses will have ribosomes - ✔✔False
Species can be broken down even further. What are different groupings within
species called in humans? - ✔✔Races
A differential stain - ✔✔1) will stain some bacteria differently than other
2) is used to determine differences between cell structures
3) is used to give color to cells so they can easily be observed under a microscope
4) is used to selectively grow certain types of bacteria
, 5) 1 and 2 (CORRECT)
You are performing a Gram stain and at the end you realize you forgot to add the
alcohol. How will Gram positive and Gram negative bacteria appear? -
✔✔Gram positive purple, Gram negative purple
You are performing a Gram stain and at the end realize you forgot to add the
Gram's iodine. How will Gram positive and Gram negative bacteria appear? -
✔✔Gram positive pink, Gram negative pink
You isolate a bacterium with an interbridge in its peptidoglycan layer. How would
you expect this bacterium to stain with a Gram stain? - ✔✔Purple
You isolate a bacterium with a 3nm peptidoglycan layer that contains a
lipopolysaccharide layer. How would you expect this bacterium to stain with a
Gram stain? - ✔✔Pink
You isolate a bacterium that produces mycolic acid around its cell wall. You forgot to
heat the primary stain during your acid fast staining procedure. What color will you
bacteria appear? - ✔✔Clear
You isolate a bacterium that can form spores. What color would you expect it to stain
with a properly prepared Gram stain? - ✔✔Purple
You isolate a bacterium that can NOT form spores. What color would you expect it to
stain with a properly prepared Gram stain? - ✔✔Could be either purple or red
(True/False)
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