Portage Microbiology BIOD171 FINAL EXAM
Verified Questions And Answers
Nucleus ANS contains genomic content in eukaryotic cells
Endoplasmic reticulum ANS series of membrane enclosed sacs and interconnected tubes
Lysosomes ANS contain hydrolytic enzymes for digestion
Chloroplast ANS Site of photosynthesis
Briefly explain how a Scanning Electron Microscope (SEM) forms an image of a microscopic specimen. ANS
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 ANS legionella
Wound botulism ANS Clostridium botulinum
Impetigo ANS staph auerus
Septicemic plague ANS yersina pestis
Yeast ANS Eukaryote
Mycobacterium ANS Prokaryote
Algae ANS Eukaryote
flu virus ANS neither eukaryote or prokaryote
, Phototroph ANS utilize photons to generate ATP from ADP
lithotroph ANS remove electrons from inorganic molecules
autotroph ANS obtain their source of carbon from inorganic molecules
chemotroph ANS 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? ANS agar
Place the following viral life cycle steps in order beginning with viral attachment (3points) and provide a
description of "UNCOATING" (1 point). ANS 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___________. ANS Decolorizes the cell
Left untreated, three percent of cases of Streptococcal pharyngitis will progress to which of the following?
ANS Rheumatic fever
Describe TWO differences between DNA and RNA. ANS 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
Verified Questions And Answers
Nucleus ANS contains genomic content in eukaryotic cells
Endoplasmic reticulum ANS series of membrane enclosed sacs and interconnected tubes
Lysosomes ANS contain hydrolytic enzymes for digestion
Chloroplast ANS Site of photosynthesis
Briefly explain how a Scanning Electron Microscope (SEM) forms an image of a microscopic specimen. ANS
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 ANS legionella
Wound botulism ANS Clostridium botulinum
Impetigo ANS staph auerus
Septicemic plague ANS yersina pestis
Yeast ANS Eukaryote
Mycobacterium ANS Prokaryote
Algae ANS Eukaryote
flu virus ANS neither eukaryote or prokaryote
, Phototroph ANS utilize photons to generate ATP from ADP
lithotroph ANS remove electrons from inorganic molecules
autotroph ANS obtain their source of carbon from inorganic molecules
chemotroph ANS 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? ANS agar
Place the following viral life cycle steps in order beginning with viral attachment (3points) and provide a
description of "UNCOATING" (1 point). ANS 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___________. ANS Decolorizes the cell
Left untreated, three percent of cases of Streptococcal pharyngitis will progress to which of the following?
ANS Rheumatic fever
Describe TWO differences between DNA and RNA. ANS 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
