NEW
Font size
WorksheetsImmune System REVIEW June 5, 2026
Total questions: 23
Worksheet time: 1hrs 3mins
The process by which dead viruses are introduced into a person's body to produce active immunity is called:
Vaccination
mutation
antibiotic treatment
organ transplant
A disease caused by a microbe/pathogen entering the body:
Noninfectious
Infectious
Allergies
Vaccination
Which of the following is a way to spread infectious diseases?
Touching contaminated objects
Not washing hands regularly
Being near infected people
All of these are ways
Vaccinations work by
making your body produce antibodies against a specific pathogen
making your body remember how to look for pathogens
preventing antibody production
making your body produce larger sized white blood cells
What virus attacks the Killer T cells, weakens the immune system, and often cause patients to die of a common cold?
COVID-19
HIV
Cancer
Flu
What is the purpose of antibodies?
to engulf infected body cells
to mark pathogens
to remember the pathogens
to destroy bacteria and prevent them from dividing
A nonliving pathogen enters someone's body and replicates once inside the cell. What type of pathogen is it?
Bacteria
Virus
fungus
Parasite
Antibodies are able to function if and only if
They match the size of the antigen they are trying to kill
They match the shape of the antigen they are trying to kill
They match the color of the antigen they are trying to kill
They match the name of the antigen they are trying to kill
Which of the following is an indication that the body is not in homeostasis?
Increase in sweating
Increase in insulin production after consuming a lot of glucose
Increase in antibiotics
Increase in white blood cells
Is bacteria considered living or non-living?
Living
Non-Living
Neither
What is the first step of the virus reproduction cycle?
The viruses genetic material (DNA) starts to take over the functions of the cell
The host cell bursts open, releasing the new viruses
The virus injects its genetic material into the cell
A virus attaches to the surface of a host cell
True or False
The covid-19 flu is caused by a virus.
true
false
Which of the following helps prevent the spread of infectious diseases?
Surgery
Medication like antibiotics
Vaccines
Which blood cells fight pathogens that get through the first line of defense, like the skin?
white blood cells
red blood cells
platelets
marrow
Every time a child visited a cousin who has two cats, the child’s eyes turned red, itched, and began to water. Then, the child began to have trouble breathing. It is most likely that the child reacted this way because
normally harmless cat antigens stimulated the immune system
it is difficult for the respiratory system to filter cat antigens out of the inhaled air
cat antigens are a health hazard, since they always cause disease
cat antigens stop the immune system from making antibodies, so bacteria cause these responses
Covid-19 vaccine is the best way to prevent covid-19. Vaccination not only protects vaccinated persons, it also reduces the risk for exposure in the community for persons unable to be vaccinated because of illness or other conditions, including those who may be at greater risk for severe disease. While no vaccine is 100% effective in preventing disease, the covid vaccine is very effective: about 8 to 9 of every 10 people who are vaccinated are completely protected from covid. In addition, the vaccine almost always prevents against severe disease. If a vaccinated person does get covid, it is usually a very mild case lasting only a few days and involving mild or no fever, and few other symptoms.
Describe how vaccinations help to prevent the spread of disease, even in people who have not received the vaccination.
Vaccines create memory cells and destroy the virus quickly if it enters the body, reducing overall spread
Vaccines create antibodies in people reducing the overall spread
Vaccines are a dead/weakened virus that produce antibodies and reduce overall spread
All of these are true
Pneumocystis is an organism normally found in the human lungs that can cause pneumonia. It seldom causes problems in individuals with healthy immune systems. However, people with AIDS sometimes become seriously ill with pneumonia. This is most likely due to the fact that individuals with AIDS have
inherited a tendency to contract pneumonia
difficulty fighting off infections
an allergy to this organism
hormones that strengthen the infection
Which disorder could develop in the human body when the immune system attacks a usually harmless environmental substance?
cancer
AIDS
an allergy
an infection
Itching and other skin problems are signs that a cat or dog may have fleas. Fleas are parasites known for their biting and blood-sucking abilities. When they bite, flea saliva enters the pet’s circulatory system, sometimes causing an allergic response commonly seen as a “hot spot” on the pet’s neck or the base of its tail.
These observations are best explained by the fact that
flea saliva may stimulate an immune response in cats and dogs
fleas are microbes whose bites cause a decreased blood flow
flea saliva is a toxic substance that is released when fleas prey on cats and dogs
fleas are host organisms whose saliva digests cat and dog fur, leaving “hot spots”
Recently, a human trachea (a respiratory organ) was produced by using a patient’s own stem cells. The benefit of using the patient’s own cells to produce a trachea instead of receiving one from a donor is that
there will be more enzymes produced to help maintain homeostasis in the trachea
there will be an increase in the quantity of antibodies that the patient produces in response to the new trachea
there is less of a chance that the patient’s immune system will attack the trachea
there will be a greater response to any infectious agent that may enter the body
The immune system protects against foreign substances and even some cancers.
*Describe step 1 of an immune response called "Recognition"
memory cells are produced
white blood cells engulf pathogen
antibodies mark the pathogen for destruction
all of these are true
The immune system protects against foreign substances and even some cancers.
*Describe step 2 of an immune response called "Destruction"
memory cells are produced
white blood cells engulf pathogen
antibodies mark the pathogen for destruction
all of these are true
The immune system protects against foreign substances and even some cancers.
*Describe step 3 of an immune response called "Memory"
memory cells are produced
white blood cells engulf pathogen
antibodies mark the pathogen for destruction
all of these are true
