STUDENTS SUCCESS
Revision Examination Tests
“Come all for this greatness”
...100% Correct Ans...
ECS1501 ASSIGNMENT 7 SEM 2 OF 2024-2025 EXPECTED
QUESTIONS AND ANSWERS- DISTINCTION GUARANTEED 100%
Certain traits that allow pathogens to create infection and cause disease
are termed
hyaluronidases.
virulence factors.
collagenases.
streptokinases.
ans:> virulence factors
Which of the following enzymes breaks down the "glue" that holds cells
together?
Hyaluronidase
Streptokinase
Collagenase
Fibrinolysin
ans:> hyaluronidase
Which of the following virulence factors would be found in
Staphylococcus aureus?
Collagenase
Streptokinase
Hyaluronidase
Staphylokinase
ans:> staphylokinase
How do fibrinolysins enhance a pathogen's virulence?
, They break down fibrin proteins that are involved in clot formation,
allowing the cells to penetrate deep into damaged skin.
They destroy the fibers that are found at the base of superficial tissues,
allowing for deeper penetration by the pathogen.
They destroy the molecules that hold cells together
ans:> they break down fibrin protein that are involved in clot formation,
allowing the cells to penetrate deep into damaged skin
What are leukocidins?
Molecules that destroy the complement proteins
Molecules that are capable of destroying phagocytes
Molecules that can degrade IgA
ans:> molecules that are capable of destroying phagocytes
Measles viruses are capable of inactivating host defenses by
producing superantigens.
destroying complement proteins.
producing leukocidins.
suppressing the immune system.
ans:> suppressing the immune system
Meningitis and gonorrhea are caused by
Pseudomonas species.
Neisseria species.
measles virus.
ans:> Neisseria species
How do superantigens enable pathogens to hide from the immune
system if they actually stimulate the immune system?
They cause the immune system to destroy IgA antibodies.
They cause the immune system to produce an exaggerated response,
distracting it from the actual pathogen.
They cause fever, which destroys the complement proteins.
They cause the immune system to turn on itself
ans:> They cause the immune system to destroy IgA antibodies
How can capsules enable bacteria to evade the immune system?
Capsules can bind up IgA, rendering it inactive.
, A capsule is a superantigen that distracts the immune system.
Capsules block the complement biding sites on the surface of the
pathogen.
ans:> capsules block the complement binding sites on the surface of the
pathogen
How are immune cells able to detect foreign pathogens?
They detect foreign, unfamiliar chemical substances released by the
invading cells.
They are able to detect structures on the surfaces of foreign cells that
are not found in the host.
They can compare the DNA sequences from the foreign cells to host
DNA.
ans:> They are able to detect structures on the surface of foreign cells
that are not found in the host
How does a capsule help certain bacteria evade detection by the
immune system?
The capsule is composed of polysaccharides that are similar to those
found in the host; thus, the immune system does not recognize it as
foreign.
The capsule makes the bacterium too sticky to be phagocytosed by the
immune cells.
Capsules allow the bacteria to stick together, creating a larger mass that
is too big for immune cells to engulf.
Capsules have the ability to destroy antibodies secreted by the immune
system.
ans:> The capsule is composed of polysaccharides that are similar to
those found in the host; thus, the immune system does not recognize it
as foreign
Which of the following microorganisms actually grows inside the
macrophage?
Tuberculosis bacterium
Leishmania
Legionella
Streptococcus pneumoniae
Shigella
ans:> tuberculosis bacterium
, How does the protozoan Trypanosoma evade detection by the immune
system?
It produces a capsule which is composed of polysaccharides similar to
those found in the host.
It can change the surface antigens frequently, preventing the immune
system from tracking it.
It prevents phagosome-lysosome fusion.
It can resist oxidation inside macrophages.
ans:> it can change the surface antigens frequently, preventing the
immune system from tracking it
An exotoxin that has the ability to kill or damage host cells is referred to
as a(n)
neurotoxin.
superantigen.
enterotoxin.
cytotoxin.
A-B toxin.
ans:> cytotoxin
While Abbie is texting, she is sitting in a slouched position and looking
down at her phone. When she becomes uncomfortable, she looks up at
the ceiling to stretch her neck in the opposite direction. Which of the
following actions is she performing when she stretches her neck?
ans:> hyperextension
Teja is walking home from the library, and his friends drive past and
honk to get his attention. While keeping his feet in place, what action can
he perform at his intervertebral joints to turn around and wave as they go
past?
ans:> rotation
Which of the following activities of the hand uses flexion of the
carpometacarpal (CMC) joint of the thumb?
ans:> holding a baseball
Cheyenne is studying movements of the humerus. She tries abducting
her shoulder, while her humerus is medially rotated and again when it is
laterally rotated. What bony prominence on the humerus is blocking
Cheyenne from being able to easily abduct her shoulder when her
humerus is medially rotated?
Revision Examination Tests
“Come all for this greatness”
...100% Correct Ans...
ECS1501 ASSIGNMENT 7 SEM 2 OF 2024-2025 EXPECTED
QUESTIONS AND ANSWERS- DISTINCTION GUARANTEED 100%
Certain traits that allow pathogens to create infection and cause disease
are termed
hyaluronidases.
virulence factors.
collagenases.
streptokinases.
ans:> virulence factors
Which of the following enzymes breaks down the "glue" that holds cells
together?
Hyaluronidase
Streptokinase
Collagenase
Fibrinolysin
ans:> hyaluronidase
Which of the following virulence factors would be found in
Staphylococcus aureus?
Collagenase
Streptokinase
Hyaluronidase
Staphylokinase
ans:> staphylokinase
How do fibrinolysins enhance a pathogen's virulence?
, They break down fibrin proteins that are involved in clot formation,
allowing the cells to penetrate deep into damaged skin.
They destroy the fibers that are found at the base of superficial tissues,
allowing for deeper penetration by the pathogen.
They destroy the molecules that hold cells together
ans:> they break down fibrin protein that are involved in clot formation,
allowing the cells to penetrate deep into damaged skin
What are leukocidins?
Molecules that destroy the complement proteins
Molecules that are capable of destroying phagocytes
Molecules that can degrade IgA
ans:> molecules that are capable of destroying phagocytes
Measles viruses are capable of inactivating host defenses by
producing superantigens.
destroying complement proteins.
producing leukocidins.
suppressing the immune system.
ans:> suppressing the immune system
Meningitis and gonorrhea are caused by
Pseudomonas species.
Neisseria species.
measles virus.
ans:> Neisseria species
How do superantigens enable pathogens to hide from the immune
system if they actually stimulate the immune system?
They cause the immune system to destroy IgA antibodies.
They cause the immune system to produce an exaggerated response,
distracting it from the actual pathogen.
They cause fever, which destroys the complement proteins.
They cause the immune system to turn on itself
ans:> They cause the immune system to destroy IgA antibodies
How can capsules enable bacteria to evade the immune system?
Capsules can bind up IgA, rendering it inactive.
, A capsule is a superantigen that distracts the immune system.
Capsules block the complement biding sites on the surface of the
pathogen.
ans:> capsules block the complement binding sites on the surface of the
pathogen
How are immune cells able to detect foreign pathogens?
They detect foreign, unfamiliar chemical substances released by the
invading cells.
They are able to detect structures on the surfaces of foreign cells that
are not found in the host.
They can compare the DNA sequences from the foreign cells to host
DNA.
ans:> They are able to detect structures on the surface of foreign cells
that are not found in the host
How does a capsule help certain bacteria evade detection by the
immune system?
The capsule is composed of polysaccharides that are similar to those
found in the host; thus, the immune system does not recognize it as
foreign.
The capsule makes the bacterium too sticky to be phagocytosed by the
immune cells.
Capsules allow the bacteria to stick together, creating a larger mass that
is too big for immune cells to engulf.
Capsules have the ability to destroy antibodies secreted by the immune
system.
ans:> The capsule is composed of polysaccharides that are similar to
those found in the host; thus, the immune system does not recognize it
as foreign
Which of the following microorganisms actually grows inside the
macrophage?
Tuberculosis bacterium
Leishmania
Legionella
Streptococcus pneumoniae
Shigella
ans:> tuberculosis bacterium
, How does the protozoan Trypanosoma evade detection by the immune
system?
It produces a capsule which is composed of polysaccharides similar to
those found in the host.
It can change the surface antigens frequently, preventing the immune
system from tracking it.
It prevents phagosome-lysosome fusion.
It can resist oxidation inside macrophages.
ans:> it can change the surface antigens frequently, preventing the
immune system from tracking it
An exotoxin that has the ability to kill or damage host cells is referred to
as a(n)
neurotoxin.
superantigen.
enterotoxin.
cytotoxin.
A-B toxin.
ans:> cytotoxin
While Abbie is texting, she is sitting in a slouched position and looking
down at her phone. When she becomes uncomfortable, she looks up at
the ceiling to stretch her neck in the opposite direction. Which of the
following actions is she performing when she stretches her neck?
ans:> hyperextension
Teja is walking home from the library, and his friends drive past and
honk to get his attention. While keeping his feet in place, what action can
he perform at his intervertebral joints to turn around and wave as they go
past?
ans:> rotation
Which of the following activities of the hand uses flexion of the
carpometacarpal (CMC) joint of the thumb?
ans:> holding a baseball
Cheyenne is studying movements of the humerus. She tries abducting
her shoulder, while her humerus is medially rotated and again when it is
laterally rotated. What bony prominence on the humerus is blocking
Cheyenne from being able to easily abduct her shoulder when her
humerus is medially rotated?
