Toll-like receptors represent an ancient pathogen-recognition system. The first pattern recognition receptor (PRR) important in innate immune responses was discovered in the fruit fly Drosophila melanogaster. Stimulation of this receptor, called Toll, induces: The synthesis of prostaglandins and leukotrienes The inflammatory response in Drosophila hemolymph vessels The production of antimicrobial peptides The recruitment of phagocytic cells to the site of infection The activation of Drosophila complement

Q: Some Pattern Recognition Receptors (PRRs) recognize nucleic acids, like RNA or DNA. Since our own…

A: The immune system is an important organ system in the body that plays a role in defense against…

Q: Explain the multifaceted role of interferons as first responders to viral infection: What types of…

A: Introduction: - interferons usually belongs to the glycoproteins of low molecular weight. These…

Q: On phagocytes and other cells, (?????) are receptors classified as part of the innate immune system…

A: The defense mechanism you were born with is called innate immunity, or nonspecific immunity. It…

Q: 1a) LIST and DESCRIBE at least 5 Molecules and Cell types that are shared and interconnect the…

A: From a functional standpoint, the immune system is made up of two distinct but interacting and…

Q: Shigella, Mycobacterium, and numerous other pathogens have developed mechanisms that prevent them…

A: Pathogens have developed several methods to evade the immune mechanisms of the host. Evasion of the…

Q: Why would a virus that can interfere with a host cell’s production of MHC class I molecules be at an…

A: The body has its mechanism which acts as the defense system for the body. It recognizes the foreign…

Q: In HIV, helper T cells are affected. Describe how this impacts both the humoral and cell- mediated…

A: HIV (human immunodeficiency virus) is a virus that attacks the immune system of the body. It creates…

Q: From the standpoint of defending the human body, why would it be beneficial for the cells that line…

A: Toll-like (TLR's) receptors are present in the cell membrane, which plays an important role in the…

Q: True/False: MHC class I surface expression is dependent on an abundant source of pathogen-derived…

A: MHC I are established on all nucleated body cells, and MHC II are established on macrophages,…

Q: Draw a figure illustrating the sequence of events in a typical inflammatory response to a bacterial…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Why is it significant that toll-like receptors (TLRs) are found on both the plasma membrane and…

A: Introduction TLRs recognize pathogens and generates an immediate defence response. Induce cytokines…

Q: The antimicrobial peptides (AMPs) are a special class of nonspecific cell-derived mediators with…

A: innate system of immunity is the first defense of the body . anti microbial peptides are part of the…

Q: The classic inflammatory response (heat, swelling, redness, pain) reflects the communication of…

A: The classic inflammatory response is a complex and coordinated series of events orchestrated by the…

Q: A mouse is infected with staphylococcal bacteria through a laceration in the skin of its paw.…

A: Dendritic cells are important immune system regulators. They act as a bridge between the innate and…

Q: Which of the following statements are TRUE about the process of inflammation? (Select all that…

A: Inflammation refers to the  body's process of fighting against infections, injuries, and toxins, in…

Q: Recent evidence points towards a global increase in cases of multi drug and total drug resistant…

A: Mycobacterium: Mycobacterium is a genus of aerobic, acid-fast, gram-positive bacteria. There are…

Q: Which of these best describes NOD-like receptors? Most are found on the plasma membrane where they…

A: Nucleotide-binding and oligomerization domain (NOD)-like receptors  are pattern-recognition…

Q: The adaptive immune system uses multiple strategies to generate diversity in our ability to mount…

A: Adaptive immunity is made up of two main components: T cells and B cells. An immune system that…

Q: Multiple pathways for regulating complement activation limit the potential damage caused by…

A: The complement pathway is a complicated process that aids in the eradication or suppression of…

Q: The classical complement pathway is initiated by C1q binding to the surface of a pathogen. In some…

A: The process of the complement system circulate in an inactive form, but in response to the…

Q: Which of the following is true about innate immune system? Check all that apply. PAMPs recognize…

A: Introduction  Immunity is an ability of an organism to fight against a particular infection. There…

Q: Ingestion of complement-tagged pathogens by phagocytes is mediated by receptors for the bound…

A: INTRODUCTION The complement system, also known as complement cascade, is a part of the immune system…

Q: NCR- ILC3 make up one of the most frequent ILC subsets in the human peripheral blood, while NCR+…

A: Innate immunity is that immunity which confers to the inbuilt immunity of the body. This immunity…

Q: The innate immune system has to be able to detect foreign invaders.  Explain two ways that the…

A: Step 1 The innate immune system is a natural genotype-based system of defense elements with which an…

Q: Secretory IgA produced in the epithelium of mucosal surfaces has several functions in protective…

A: There are five different classes of antibodies or immunoglobulence with different properties IgG,…

Q: Where is the CD4 receptor?  What is it’s role in the immune response? (provide details – innate vs…

A: The human immune system is made up of the ancient innate immune system that originated from…

Q: The mechanism of cross-presentation by dendritic cells is an essential pathway for generating CD8 T…

A: Cross-presentation is the capacity of specific skilled antigen-presenting cellscells to adopt,…

Q: TLR-4 recognizes bacterial lipopolysaccharide in association with the host accessory proteins MD-2…

A: TLR is a toll-like receptor. It is a class of pattern recognition molecules that function as a…

Q: The formation of the C3 convertase is a key step in complement activation that occurs in all three…

A: The complementary system occurs in the cascade of reactions which is a part of the immune system. It…

Q: From the list below, select all the examples that of defense that ARE NOT considered part of the…

A: Hypersensitive Response: The hypersensitive response (HR) is a plant defense mechanism that involves…

Q: Individuals infected with herpes simplex virus (HSV) mount protective antibody responses directed…

A: The complement system of our innate immunity depends on the protein C3. C3 is another name for the…

Q: shows the directed migration of two immune cell types, neutrophils (red) and macrophages (green) to…

A: Immune cells are the sort of cells that emerge from stem cells in the bone marrow and mature into…

Q: Based on the figure presented in attachment what is the most likely ligand for TLR-XX? Be as…

A: Toll-like receptors (TLRs) are proteins found on the surface of immune system cells that play an…

Q: In cell culture experiments, purified B cells expressing IgM can be induced to switch to producing…

A: In experimental settings involving cell cultures, the transformation of B cells expressing IgM into…

Q: The circulating cytokines that recruit large numbers of phagocytes to the area of inflammation,…

A: Phagocytes are cells that are capable of engulfing foreign antigens such as microbes, toxins, and…

Q: Microbial recognition and tissue damage initiate an inflammatory response.  True/False

A: The body is protected from the invasion of foreign antigen by several layers of immune defense…

Q: e intestinal tract

A: 1  infection in pregnant patient may lead to infection in the fetus  Rubella is an infectious viral…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.