STUDENTS SUCCESS
Revision Examination Tests
“Come all for this Greatness”
... 100% Correct Ans ...
BIOL 2604 MICROBIOLOGY ASSIGNMENT 4 - DISTINCTION GUARANTEED
2024-2025- QUESTIONS AND CORRECT DETAILED ANSWERS 2024/2025
Quiz Host
Ans: Organisms that contain other organisms
Quiz Parasite
Ans: Grown in or on a host with negative impact
Quiz Colonization
Ans: Non-pathogenic microbial growth on or in a host
Quiz Infection
Ans: Pathogenic microbial growth in or on a host
Quiz Disease
Ans: Causes injury or impairs function of a host
Quiz Pathogen
Ans: Causes disease
Quiz Obligate pathogen
Ans: Always causes disease
Quiz Opportunistic pathogen
Ans: Normally does not cause disease in healthy hosts, causes disease in impaired
hosts (ex: immunocompromised)
Quiz Pathogenicity
,Ans: Ability to cause disease (could be a pathogen)
Quiz Virulence
Ans: Degree of pathogenicity (scale from mild to life threatening)
Quiz Human body has a normal flora that...
Ans: Competes with pathogens for space and nutrients
Quiz Colonization resistance
Ans: Normal human flora produces products that inhibit pathogens
Quiz Example of nutrients for a host that compete with pathogens
Ans: Vitamins (like B12)
Quiz Where does colonization occur (in humans)
Ans: Nearly all skin and muscle surfaces
Quiz Difference between the amount of human cells & bacterial cells in/on human
body?
Ans: 10^13 vs 10^14
Quiz Where is the highest density of bacteria on/in the human body?
Ans: The gut
Quiz The skin is the first line of defense...
Ans: It is dry, acidic and salty
Quiz Skin microflora is depending on what factors?
Ans: Weather, age, and hygiene
Quiz Where can anaerobes grow on the skin?
Ans: Hair follicles and sebaceous fluids
Quiz Skin flora is dominated by what kind of bacteria?
Ans: Gram positive cocci
Quiz What does it mean that residents of the Upper Respiratory Tract and Oral
Cavity are transient?
, Ans: Organisms can be trapped during breathing and expelled with nasal secretions
Quiz Common microflora of the mouth, nose and throat:
Ans: Gram positive Staphylococci and Streptococci
Quiz Dental Carries
Ans: House bacteria that can ferment sugars and acidifies - acidity demineralizes
teeth
Quiz In the URT & Oral Cavity anaerobes...
Ans: Outnumber aerobes
Quiz What are clearance mechanisms for the Lower Respiratory Tract?
Ans: Cough reflex, alveolar macrophages
Quiz What happens to airborne/inhaled organisms?
Ans: Trapped in the URT and removed by ciliated epithelium
Quiz What makes up the Lower Respiratory Tract? How much bacteria is usually
found?
Ans: Trachea, bronchi, and lungs; few bacteria
Quiz Gi Tract: Stomach
Ans: denaturation, degradation of macromolecules, aerobic, pH of 2 (acidic)
Quiz GI Tract: Small Intestine
Ans: more digestion, absorption of amino acids, fatty acids, water, microaerobic, pH
of 4-5
Quiz GI Tract: Large Intestine
Ans: Absorption of bile acids, vitamin B12, anaerobic, neutral (pH 7)
Quiz What is a healthy adult microbiome?
Ans: Unique to the individual, similar metabolic functions, different sites on the body
have different types of bacteria
Quiz Early (age) gut colonizers?
Ans: Facultative anaerobes - lactobacillus and bifidobacterium
Revision Examination Tests
“Come all for this Greatness”
... 100% Correct Ans ...
BIOL 2604 MICROBIOLOGY ASSIGNMENT 4 - DISTINCTION GUARANTEED
2024-2025- QUESTIONS AND CORRECT DETAILED ANSWERS 2024/2025
Quiz Host
Ans: Organisms that contain other organisms
Quiz Parasite
Ans: Grown in or on a host with negative impact
Quiz Colonization
Ans: Non-pathogenic microbial growth on or in a host
Quiz Infection
Ans: Pathogenic microbial growth in or on a host
Quiz Disease
Ans: Causes injury or impairs function of a host
Quiz Pathogen
Ans: Causes disease
Quiz Obligate pathogen
Ans: Always causes disease
Quiz Opportunistic pathogen
Ans: Normally does not cause disease in healthy hosts, causes disease in impaired
hosts (ex: immunocompromised)
Quiz Pathogenicity
,Ans: Ability to cause disease (could be a pathogen)
Quiz Virulence
Ans: Degree of pathogenicity (scale from mild to life threatening)
Quiz Human body has a normal flora that...
Ans: Competes with pathogens for space and nutrients
Quiz Colonization resistance
Ans: Normal human flora produces products that inhibit pathogens
Quiz Example of nutrients for a host that compete with pathogens
Ans: Vitamins (like B12)
Quiz Where does colonization occur (in humans)
Ans: Nearly all skin and muscle surfaces
Quiz Difference between the amount of human cells & bacterial cells in/on human
body?
Ans: 10^13 vs 10^14
Quiz Where is the highest density of bacteria on/in the human body?
Ans: The gut
Quiz The skin is the first line of defense...
Ans: It is dry, acidic and salty
Quiz Skin microflora is depending on what factors?
Ans: Weather, age, and hygiene
Quiz Where can anaerobes grow on the skin?
Ans: Hair follicles and sebaceous fluids
Quiz Skin flora is dominated by what kind of bacteria?
Ans: Gram positive cocci
Quiz What does it mean that residents of the Upper Respiratory Tract and Oral
Cavity are transient?
, Ans: Organisms can be trapped during breathing and expelled with nasal secretions
Quiz Common microflora of the mouth, nose and throat:
Ans: Gram positive Staphylococci and Streptococci
Quiz Dental Carries
Ans: House bacteria that can ferment sugars and acidifies - acidity demineralizes
teeth
Quiz In the URT & Oral Cavity anaerobes...
Ans: Outnumber aerobes
Quiz What are clearance mechanisms for the Lower Respiratory Tract?
Ans: Cough reflex, alveolar macrophages
Quiz What happens to airborne/inhaled organisms?
Ans: Trapped in the URT and removed by ciliated epithelium
Quiz What makes up the Lower Respiratory Tract? How much bacteria is usually
found?
Ans: Trachea, bronchi, and lungs; few bacteria
Quiz Gi Tract: Stomach
Ans: denaturation, degradation of macromolecules, aerobic, pH of 2 (acidic)
Quiz GI Tract: Small Intestine
Ans: more digestion, absorption of amino acids, fatty acids, water, microaerobic, pH
of 4-5
Quiz GI Tract: Large Intestine
Ans: Absorption of bile acids, vitamin B12, anaerobic, neutral (pH 7)
Quiz What is a healthy adult microbiome?
Ans: Unique to the individual, similar metabolic functions, different sites on the body
have different types of bacteria
Quiz Early (age) gut colonizers?
Ans: Facultative anaerobes - lactobacillus and bifidobacterium
