Question 1

Type II interferon inhibits viral replication and activates natural killer cells.

Accepted Answer

The answer of Type II interferon inhibits viral replication and...

Question 2

Active immunity occurs after transfer of antibodies from mother to fetus.

Accepted Answer

Active immunity occurs when an individual's immune system produces antibodies in response to an infection or vaccination, not through the transfer of antibodies from another source.

Question 3

Contrast cell-mediated and antibody-mediated immunity and give a brief overview of each process.

Accepted Answer

The answer of Contrast cell-mediated and antibody-mediated immunity and give...

Question 4

Nonspecific cell responses depend on the actions of lymphocytes, natural killer cells, and dendritic cells.

Accepted Answer

Nonspecific cell responses, also known as innate immune responses, primarily depend on cells like macrophages, neutrophils, and dendritic cells, not lymphocytes or natural killer cells, which are part of the specific (adaptive) immune response.

Question 5

Match between columns
                        Premises: Transferred from mother to fetus

Accepted Answer

The Answer of Artificially induced passive and Naturally induced active is...

Question 6

Select one of the options below and compare and contrast the paired terms: 
A. Primary and secondary immune response 
B. Passive and active immunity 
C. Artificial and natural immunity

Accepted Answer

The answer of Select one of the options below and...

Question 7

Match between columns
                        Premises: Injection with gamma globulin

Accepted Answer

The Answer of Naturally induced passive and Naturally induced active is...

Question 8

Explain the events that occur during the inflammatory response and how this response is a protective mechanism.

Accepted Answer

The answer of Explain the events that occur during the...

Question 9

Class II MHC genes encode glycoproteins on the surface of cells that bind with antigens originating from intracellular pathogens.

Accepted Answer

Class II MHC genes encode glycoproteins that present antigens from extracellular pathogens to T cells, not intracellular pathogens.

Question 10

Interleukins activate and direct the movement of white blood cells from the blood to the tissues.

Accepted Answer

The answer of Interleukins activate and direct the movement of...

Question 11

Identify the following as participants in either specific or nonspecific immune responses, and provide a one-sentence explanation of the function or role of each one. 
A. Macrophages 
B. Natural killer cells 
C. Memory cells

Accepted Answer

The answer of Identify the following as participants in either...

Question 12

Specific immune responses are also referred to as innate immunity.

Accepted Answer

Specific immune responses are part of adaptive immunity, which is distinct from innate immunity. Adaptive immunity is characterized by its ability to recognize and remember specific pathogens, leading to an enhanced response upon subsequent exposures.

Question 13

Describe the sequence of events that occur during cell-mediated immunity.

Accepted Answer

The answer of Describe the sequence of events that occur...

Question 14

Describe the differences in the functions of the five immunoglobulin classes.

Accepted Answer

The answer of Describe the differences in the functions of...

Question 15

Match between columns
                        Premises: Natural exposure

Accepted Answer

The Answer of Artificially induced passive and Naturally induced passive is...

Question 16

Match between columns
                        Premises: immunization with a vaccine

Accepted Answer

The Answer of Naturally induced passive and Artificially induced passive is...

Question 17

Animal cells recognize common types of pathogen-associated molecules and activate the production of antimicrobial peptides.

Accepted Answer

Animal cells have pattern recognition receptors (PRRs) that can identify common molecular patterns associated with pathogens, known as pathogen-associated molecular patterns (PAMPs), and upon recognition, these cells can initiate immune responses including the activation of genes that encode antimicrobial peptides.

Question 18

Cell walls and cytokines of bacteria are examples of the evolution of resistance to the host immune response.

Accepted Answer

Cell walls and cytokines are not examples of bacterial evolution of resistance to the host immune response. Cell walls are structural components of bacteria, and cytokines are signaling proteins produced by cells, particularly in the immune system, not by bacteria. Bacterial resistance to the host immune response typically involves mechanisms like antibiotic resistance genes, biofilm formation, or alterations in surface antigens.

Question 19

Each T cytotoxic cell expresses CD8 and 50,000 identical T cell receptors on its surface.

Accepted Answer

T cytotoxic cells, also known as CD8+ T cells, express CD8 molecules on their surface and have around 50,000 identical T cell receptors (TCRs) that are specific to a particular antigen.

Question 20

Normally, complement proteins are active until the body is exposed to antigen.

Accepted Answer

Complement proteins are normally inactive and become activated in a cascade in response to recognition of foreign material such as pathogens.

Quiz 45: The Immune System: Internal Defense

Type II interferon inhibits viral replication and activates natural killer cells.

Active immunity occurs after transfer of antibodies from mother to fetus.

Contrast cell-mediated and antibody-mediated immunity and give a brief overview of each process.

Nonspecific cell responses depend on the actions of lymphocytes, natural killer cells, and dendritic cells.

Match the type of immunity with its development trigger.

Select one of the options below and compare and contrast the paired terms: A. Primary and secondary immune response B. Passive and active immunity C. Artificial and natural immunity

Match the type of immunity with its development trigger.

Explain the events that occur during the inflammatory response and how this response is a protective mechanism.

Class II MHC genes encode glycoproteins on the surface of cells that bind with antigens originating from intracellular pathogens.

Interleukins activate and direct the movement of white blood cells from the blood to the tissues.

Identify the following as participants in either specific or nonspecific immune responses, and provide a one-sentence explanation of the function or role of each one. A. Macrophages B. Natural killer cells C. Memory cells

Specific immune responses are also referred to as innate immunity.

Describe the sequence of events that occur during cell-mediated immunity.

Describe the differences in the functions of the five immunoglobulin classes.

Match the type of immunity with its development trigger.

Match the type of immunity with its development trigger.

Animal cells recognize common types of pathogen-associated molecules and activate the production of antimicrobial peptides.

Cell walls and cytokines of bacteria are examples of the evolution of resistance to the host immune response.

Each T cytotoxic cell expresses CD8 and 50,000 identical T cell receptors on its surface.

Normally, complement proteins are active until the body is exposed to antigen.