MICR290 - FINAL STUDY GUIDE || 100% Correct Answers.
Which of the following prokaryotic cells possesses an outer membrane? correct answers Gram-
negative bacteria
Free-living microorganisms characterized by the absence of a nucleus are called: correct answers
Prokaryotes
Using a microscope, you observe an amoeba moving toward a food source. This is an example
of: correct answers Chemotaxis
Which of the following is an incorrect pairing?
Fungi - yeast
Protozoa - prokaryote
Algae - multicellular
Viruses - acellular
Bacteria- unicellular correct answers protozoa-prokaryote
The process by which parts of DNA getting copied to make messenger RNA is called: correct
answers Transcription
Presence of this structure in spiral shaped bacteria (spirochetes) gives them penetrating power
into the tissues. correct answers Axial filament
The cell walls of __________ contain peptidoglycan. correct answers Bacteria
Which of the following organelles is responsible for producing most of the ATP in a eukaryotic
cell? correct answers Mitochondria
,Which of the following bacterial cell structures plays an important role in the creation of
biofilms? correct answers Capsule (Slime layer)
In bacteria, transfer of DNA from one cell to another by way of sex pilus is called: correct
answers Conjugation
Which of the following structures are present in both eukaryotic and prokaryotic cells? correct
answers Ribosomes
MacConkey agar plates represent ________ medium. correct answers both selective and
differential
What is a virus that infects bacteria called? correct answers phage
What is the correct order for the application of Koch's postulates?
I. Inoculate suspect agent into test subject and observe that subject develops disease of interest.
II. Isolate and culture suspect agent in the laboratory.
III. Find suspect agent is every case of disease of interest but not in healthy hosts.
IV. Recover and isolate suspect agent from test subject. correct answers III. Find suspect agent is
every case of disease of interest but not in healthy hosts.
II. Isolate and culture suspect agent in the laboratory.
I. Inoculate suspect agent into test subject and observe that subject develops disease of interest.
IV. Recover and isolate suspect agent from test subject.
(III, II, I, IV)
Bacteria reproduce by the process of: correct answers Binary fission
Process of fermentation in bacteria may include generation of each of the following molecules
except: correct answers Amino acid and Glucose
, Which of the following scientists discovered microscope? correct answers Leuwenhoek
Heterotrophic organisms create energy by which of the following routes? correct answers
Catabolism of nutrients
Which of the following is considered as anabolic reaction? correct answers Protein synthesis
Which one of the following microorganisms are best viewed by method of dark field
microscopy? correct answers Spirochetes
Differences in quantity of which of the following components of bacterial cell wall contribute
most to the differences in the Gram reactivity following a Gram stain? correct answers
Peptidoglycan
Assume the diameter of the field of vision in your microscope is 2.5 mm under low power. If one
yeast cell is 5 um, how many yeast cells could fit across the field? correct answers 500
Which one of the following steps of the Gram stain is called the differential step? correct
answers Decolorization
A(n) ________ organism is one that dies in the presence of oxygen correct answers Obligate
anaerobe
Given that the drug penicillin destroys bacteria most effectively when they are actively growing,
during which phase of their growth curve, bacteria are most susceptible to penicillin? correct
answers Exponential (Log) phase
All of the following structures may be found in eukaryotic cells except: correct answers
Lipopolysaccharide
Which of the following prokaryotic cells possesses an outer membrane? correct answers Gram-
negative bacteria
Free-living microorganisms characterized by the absence of a nucleus are called: correct answers
Prokaryotes
Using a microscope, you observe an amoeba moving toward a food source. This is an example
of: correct answers Chemotaxis
Which of the following is an incorrect pairing?
Fungi - yeast
Protozoa - prokaryote
Algae - multicellular
Viruses - acellular
Bacteria- unicellular correct answers protozoa-prokaryote
The process by which parts of DNA getting copied to make messenger RNA is called: correct
answers Transcription
Presence of this structure in spiral shaped bacteria (spirochetes) gives them penetrating power
into the tissues. correct answers Axial filament
The cell walls of __________ contain peptidoglycan. correct answers Bacteria
Which of the following organelles is responsible for producing most of the ATP in a eukaryotic
cell? correct answers Mitochondria
,Which of the following bacterial cell structures plays an important role in the creation of
biofilms? correct answers Capsule (Slime layer)
In bacteria, transfer of DNA from one cell to another by way of sex pilus is called: correct
answers Conjugation
Which of the following structures are present in both eukaryotic and prokaryotic cells? correct
answers Ribosomes
MacConkey agar plates represent ________ medium. correct answers both selective and
differential
What is a virus that infects bacteria called? correct answers phage
What is the correct order for the application of Koch's postulates?
I. Inoculate suspect agent into test subject and observe that subject develops disease of interest.
II. Isolate and culture suspect agent in the laboratory.
III. Find suspect agent is every case of disease of interest but not in healthy hosts.
IV. Recover and isolate suspect agent from test subject. correct answers III. Find suspect agent is
every case of disease of interest but not in healthy hosts.
II. Isolate and culture suspect agent in the laboratory.
I. Inoculate suspect agent into test subject and observe that subject develops disease of interest.
IV. Recover and isolate suspect agent from test subject.
(III, II, I, IV)
Bacteria reproduce by the process of: correct answers Binary fission
Process of fermentation in bacteria may include generation of each of the following molecules
except: correct answers Amino acid and Glucose
, Which of the following scientists discovered microscope? correct answers Leuwenhoek
Heterotrophic organisms create energy by which of the following routes? correct answers
Catabolism of nutrients
Which of the following is considered as anabolic reaction? correct answers Protein synthesis
Which one of the following microorganisms are best viewed by method of dark field
microscopy? correct answers Spirochetes
Differences in quantity of which of the following components of bacterial cell wall contribute
most to the differences in the Gram reactivity following a Gram stain? correct answers
Peptidoglycan
Assume the diameter of the field of vision in your microscope is 2.5 mm under low power. If one
yeast cell is 5 um, how many yeast cells could fit across the field? correct answers 500
Which one of the following steps of the Gram stain is called the differential step? correct
answers Decolorization
A(n) ________ organism is one that dies in the presence of oxygen correct answers Obligate
anaerobe
Given that the drug penicillin destroys bacteria most effectively when they are actively growing,
during which phase of their growth curve, bacteria are most susceptible to penicillin? correct
answers Exponential (Log) phase
All of the following structures may be found in eukaryotic cells except: correct answers
Lipopolysaccharide
