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Portage Microbiology BIOD171 FINAL EXAM questions and answers rated A+
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Portage Microbiology BIOD171 FINAL EXAM questions and answers rated A+
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Portage Microbiology BIOD171 FINAL EXAMquestions and answers rated A+
A researcher is looking to solidify an agent for growth media. What polysaccharide
substance would he or she use? - ✔✔agar
Place the following viral life cycle steps in order beginning with viral attachment (3points) and
provide a description of "UNCOATING" (1 point). - ✔✔1-Attachment:
2-Entry:
3- Uncoating: the viral capsid disassembles
4-Replication:
5-Release:
6-New infection:
The action of alcohol during Gram staining is___________. - ✔✔Decolorizes the cell
Left untreated, three percent of cases of Streptococcal pharyngitis will progress to which of the
following? - ✔✔Rheumatic fever
Describe TWO differences between DNA and RNA. - ✔✔Answer: Any of the following are
acceptable answers: RNA contains the sugar ribose rather than deoxyribose. RNA is always
single-stranded, whereas DNA is double-stranded. While RNA contains the bases adenine,
, guanine, and cytosine, it does not utilize the pyrimidine base thymine. Instead, RNA
contains uracil (U), which still pairs with adenine (A).
True or False. If the statement is false, change it to make it true.
When grown on Blood Agar Plates (BAP), microbes capable of delta hemolysis designate the
absence or lack of hemolytic activity, and the resulting colonies are often white/tan in color
growing on the red background color of the unaffected blood agar plate. - ✔✔Answer: False;
Gamma Hemolysis designates the absence or lack of hemolytic activity, and the resulting
colonies are often white/tan in color growing on the red background color of the unaffected
blood agar plate.
Each of the following statements about the Electron Transport System is true, except: -
✔✔Occurs mainly in the nuclear membrane of the cell
Describe the TWO main characteristics of LYSOGENIC (temperate) bacteriophage replication.
- ✔✔(1) Exist in a non-replicative state that does not kill the host cell
(2) Integrated into the host genome but production of viral proteins is suppressed
Bacteria that have a round morphology are referred to as ______. - ✔✔Coccus
You want to observe the movement of microorganisms that are present in a sample of cheek
cells obtained on a patient. Briefly explain the technique that you would use and how it is
performed. - ✔✔A wet mount stain is indicated. A small liquid culture (usually just a drop)
containing a microorganism of interest is prepared, added to a slide, and then covered with a
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