Portage Microbiology BIOD171 FINAL EXAM Questions
with verified answers @2026
Nucleus - ANSWERS💫✔️-contains genomic content in eukaryotic cells
Endoplasmic reticulum - ANSWERS💫✔️-series of membrane enclosed sacs and interconnected tubes
Lysosomes - ANSWERS💫✔️-contain hydrolytic enzymes for digestion
Chloroplast - ANSWERS💫✔️-Site of photosynthesis
Briefly explain how a Scanning Electron Microscope (SEM) forms an image of a microscopic specimen.
- ANSWERS💫✔️-Answer: An image is formed from the interactions of electrons as they reflect off (not
through) the surface of the specimen. Samples are coated in either gold or palladium to enhance
electron reflections. The reflection is seen in 3-D rendering.
Legionnaires - ANSWERS💫✔️-legionella
Wound botulism - ANSWERS💫✔️-Clostridium botulinum
Impetigo - ANSWERS💫✔️-staph auerus
Septicemic plague - ANSWERS💫✔️-yersina pestis
Yeast - ANSWERS💫✔️-Eukaryote
Mycobacterium - ANSWERS💫✔️-Prokaryote
Algae - ANSWERS💫✔️-Eukaryote
, flu virus - ANSWERS💫✔️-neither eukaryote or prokaryote
Phototroph - ANSWERS💫✔️-utilize photons to generate ATP from ADP
lithotroph - ANSWERS💫✔️-remove electrons from inorganic molecules
autotroph - ANSWERS💫✔️-obtain their source of carbon from inorganic molecules
chemotroph - ANSWERS💫✔️-acquire energy from preformed chemicals in the environment
A researcher is looking to solidify an agent for growth media. What polysaccharide substance would
he or she use? - ANSWERS💫✔️-agar
Place the following viral life cycle steps in order beginning with viral attachment (3points) and provide
a description of "UNCOATING" (1 point). - ANSWERS💫✔️-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___________. - ANSWERS💫✔️-Decolorizes the cell
Left untreated, three percent of cases of Streptococcal pharyngitis will progress to which of the
following? - ANSWERS💫✔️-Rheumatic fever
Describe TWO differences between DNA and RNA. - ANSWERS💫✔️-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
with verified answers @2026
Nucleus - ANSWERS💫✔️-contains genomic content in eukaryotic cells
Endoplasmic reticulum - ANSWERS💫✔️-series of membrane enclosed sacs and interconnected tubes
Lysosomes - ANSWERS💫✔️-contain hydrolytic enzymes for digestion
Chloroplast - ANSWERS💫✔️-Site of photosynthesis
Briefly explain how a Scanning Electron Microscope (SEM) forms an image of a microscopic specimen.
- ANSWERS💫✔️-Answer: An image is formed from the interactions of electrons as they reflect off (not
through) the surface of the specimen. Samples are coated in either gold or palladium to enhance
electron reflections. The reflection is seen in 3-D rendering.
Legionnaires - ANSWERS💫✔️-legionella
Wound botulism - ANSWERS💫✔️-Clostridium botulinum
Impetigo - ANSWERS💫✔️-staph auerus
Septicemic plague - ANSWERS💫✔️-yersina pestis
Yeast - ANSWERS💫✔️-Eukaryote
Mycobacterium - ANSWERS💫✔️-Prokaryote
Algae - ANSWERS💫✔️-Eukaryote
, flu virus - ANSWERS💫✔️-neither eukaryote or prokaryote
Phototroph - ANSWERS💫✔️-utilize photons to generate ATP from ADP
lithotroph - ANSWERS💫✔️-remove electrons from inorganic molecules
autotroph - ANSWERS💫✔️-obtain their source of carbon from inorganic molecules
chemotroph - ANSWERS💫✔️-acquire energy from preformed chemicals in the environment
A researcher is looking to solidify an agent for growth media. What polysaccharide substance would
he or she use? - ANSWERS💫✔️-agar
Place the following viral life cycle steps in order beginning with viral attachment (3points) and provide
a description of "UNCOATING" (1 point). - ANSWERS💫✔️-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___________. - ANSWERS💫✔️-Decolorizes the cell
Left untreated, three percent of cases of Streptococcal pharyngitis will progress to which of the
following? - ANSWERS💫✔️-Rheumatic fever
Describe TWO differences between DNA and RNA. - ANSWERS💫✔️-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
