UIUC MCB 100 EXAM 3 QUESTIONS AND ACCURATE
ANSWERS
A response that is uniquely directed against pathogenic Bordetella pertussis would
involve what component? - Answers - Antibodies
First line defenses have what aspect in common with each other? - Answers - They are
physical barriers against invading pathogens.
Both the innate and adaptive defenses of the immune system work to prevent - Answers
- the penetration and colonization by pathogens, and the diseases they cause.
If a new bacterial pathogen entered a human body through an accidental needle stick,
the first cell that would try to kill the pathogen would likely be - Answers - a phagocyte
The first and second lines of defense against microbial invasion are part of - Answers -
innate immunity.
Protection from infection known as species resistance is a result of - Answers - both the
absence of necessary receptors and lack of suitable environment in the body.
What cellular macromolecules make up the complement pathway? - Answers - Proteins
Based on the animation, which of the following is cleaved by C1? - Answers - C2 and
C4
Where are the complement proteins found in the body? - Answers - The blood serum
Based on the animation, which of the following is responsible for cleaving C3? -
Answers - C2aC4b
Based on the animation, which of the complement proteins can directly bind to the
surface of a bacterial cell? - Answers - C3b
How does cytolysis occur via the complement pathway? - Answers - Formation of the
MAC in invading cells, killing them
Which complement protein is used as an opsonin? - Answers - C3b
If a person lacked the ability to form C5, what direct result of complement could still
occur? - Answers - Opsonization
ANSWERS
A response that is uniquely directed against pathogenic Bordetella pertussis would
involve what component? - Answers - Antibodies
First line defenses have what aspect in common with each other? - Answers - They are
physical barriers against invading pathogens.
Both the innate and adaptive defenses of the immune system work to prevent - Answers
- the penetration and colonization by pathogens, and the diseases they cause.
If a new bacterial pathogen entered a human body through an accidental needle stick,
the first cell that would try to kill the pathogen would likely be - Answers - a phagocyte
The first and second lines of defense against microbial invasion are part of - Answers -
innate immunity.
Protection from infection known as species resistance is a result of - Answers - both the
absence of necessary receptors and lack of suitable environment in the body.
What cellular macromolecules make up the complement pathway? - Answers - Proteins
Based on the animation, which of the following is cleaved by C1? - Answers - C2 and
C4
Where are the complement proteins found in the body? - Answers - The blood serum
Based on the animation, which of the following is responsible for cleaving C3? -
Answers - C2aC4b
Based on the animation, which of the complement proteins can directly bind to the
surface of a bacterial cell? - Answers - C3b
How does cytolysis occur via the complement pathway? - Answers - Formation of the
MAC in invading cells, killing them
Which complement protein is used as an opsonin? - Answers - C3b
If a person lacked the ability to form C5, what direct result of complement could still
occur? - Answers - Opsonization
