QUESTION 16 The MHC I presentation complex has a reglon for the to bind Oa CDe on the killer T O CDA on the helper T Oe CD4 on the killer T Od. CO8 an the helper T QUESTION 17 Which type of cell can differentiate into either a TH1 or TH2 cell? Oa monacyte Ob. CD4 cell OC CD8 cell Od.B lymphocyte

Q: Question 22 A single hemoglobin molecule can transport up to O three oxygen molecules. O one oxygen…

A: Introduction: Red blood cells include a protein called haemoglobin, which transports oxygen to the…

Q: The lymph node is surrounded by what type of tissue ? O Epithelial O Nerve O Muscle Connective

A: In case of closed blood vascular system blood remain always confined within the blood vessels. Lymph…

Q: Question 42 According to the SIR model of infectious disease transmission that incorporates…

A: S x I x b in the SIR model of infectious disease transmission represents the rate of infection…

Q: Question 14 The following describes how PKD affect RBCS, except... O causes spiculated cells O…

A: Pyruvate kinase deficiency (PKD) is an enzyme-related glycolytic defect that results in red cell…

Q: A nurse examines a patient's computerized tomography (CT) scan report showing a 2 cm tumor in the…

A: The TNM staging is the best method for staging the cancers.   Breast cancer has it's own TNM…

Q: Which of these is an unencapsulated lymph tissue? Thymus None of these Lymph nodes O Spleen Peyer's…

A: In the body, lymphocyte production and storage are performed by the lymphatic system. The…

Q: The vascular response in inflammation is characterized by: O all of the above migration of…

A: Vascular response in inflammation??? The vascular response in inflammation refers to the changes…

Q: QUESTION 10 Which imaging method would give you the technical ability to view the details of the…

A: Differential interference contrast (DIC) microscopy is a type of light microscopy technique that…

Q: An infant gaining antibodies from breast milk is an example of: O artificially acquired, passive…

A: Innate immunity is formed by skin, mucosa, phagocytic cells and interferons. Acquired immunity is…

Q: Regarding the antigen receptor repertoires of lymphocyte populations, which of the following Venn…

A: Immunity is defined as the ability of an organism to prevent the entry of harmful microbes in the…

Q: Question 36 A CD8 cell is associated with which of the following: displaying antigens that are only…

A: CD8  means a cluster of differentiation 8 is a transmembrane glycoprotein that fulfils as a…

Q: Question 20 Which of the following is an example of chemical defense? O Inflammatory cytokines O…

A: Inflammatory cytokines

Q: Question 2 of 15 Many nutritional deficiency in B vitamins are associated with what symptoms? I.…

A: Vitamin B refers to a group of water-soluble vitamins that play important roles in various cellular…

Q: A graduate student, whom had not taken BIOL 531, localized the epitope for an antibody generated by…

A: COVID - 19 is an infectious disease caused by a newly discovered coronavirus. CO stands for corona,…

Q: QUESTION 82 Which of the following cells is NOT an APC? O mature B cells Onatural killer cells…

A: Antigen-presenting (APC) cells can process antigens, by breaking them into peptides and presenting…

Q: 47. When T2 phages infect bacteria and make more viruses in the presence of radioactive phosphorus,…

A: Introduction: Hershey and Chase worked with bacteriophage and E.coli to prove that DNA is the…

Q: NSULIN causes fat, liver, and muscle cells to take in glucose. In this situation the effector…

A: Insulin is a harmony which regulates the blood glucose level . Due to question answering guidelines…

Q: Salma Rick Layla Adie Mac A Rh A Rh Rh Rh Rh B B B The blood type for Salma is The blood type for…

A: The blood type for Salma is A positive The blood type for Rick is AB negative  The blood type for…

Q: Question 5 Review 43.2. Match the term and its description. Each term can only be used once. These…

A: Pathogens are the disease causing agent. The immune system removes pathogen from body.

Q: MHC I is a carbohydrate that presents foreign antigens on the surface of a nucleated cell. is a…

A: MHC1 stands for Major Histocompatibility Complex class I, which is a set of cell surface proteins…

Q: OBasophils O Macrophages

A: Phagocytic name is come from the greek work phagein that means to eat and 2nd word is cyte  .…

Q: What is the average life span of a red blood cell? O a. 180 days O b. 90 days O c. 150 days O d. 120…

A: Blood is a fluid connective tissue that is composed of several components such as red blood cells…

Q: Which of the following leukocytes specialize in phagocytosis? O monocytes and neutrophils O an…

A: The immune system of the human body consists of white blood cells, antibodies, spleen, thymus, and…

Q: Question 24 Which of these is a major part of the immune system? O spleen O kidney O liver O heart

A: Our immune system is important for our survival. while not an system, our bodies would be open to…

Q: Question 26 Secondary immune responses develop faster and stronger than primary immune responses.

A: Ans- A . True

Q: Reading Comprehension Question. This is a description of one type breast cancer. One in five…

A: Cancer is defined as the cells dividing without any control at a very fast rate. Uncontrolled growth…

Q: Question 25 What is the term (one word) in TNM system that describes the spread of cancer to…

A: The term in the TNM staging system that describes the spread of cancer to different regions of the…

Q: How would these neutralizing antibodies protect us from infection v O complement activation which…

A: Neutralizing antibodies work on the mechanism of neutralization of the pathogen, making it…

Q: I| HO CH,OH CH;ČNH Protein в A II CH2OH HO ČH4OH OH IV Is the antigenic determinant reducing or…

A: Glycans:  These are chain-like structures made up of monosaccharides (single sugar molecules)…

Q: QUESTION 4 A person with agammaglobulinemia: cannot produce antibodies cannot produce interferons…

A: Agammaglobulinemia is a inherited disorder in which, person has low levels of protective immune…

Q: Which of these combats invaders by releasing granules? О В сell O dendritic cell O eosinophil O…

A: 1. B cell also known as WBC provides humoral immunity to the body.  2. Dendritic cell interacts with…

Q: QUESTION 10 Cystic Fibrosis is caused by a mutation in a protein called? a. Insulin O b. Amyloid O…

A: Cystic fibrosis transmembrane conductance regulator protein is basically formed by the instruction…

Q: In a Yersinia infection, there is a competition between Yersinia's Type Ill secretion system and the…

A: Yaersinia peptide would be presented on the macrophage surface by MHC-2.

Q: Happened? (There are at least expla 2. Drugs with names that end in "-mab" consist of anti- bodies,…

A: Our immune system consists many cells and organs such as Thymus (T cells), Bone marrow (B cells),…

Q: Question 40       the immunoglobulin sequences involved in antigen binding is situated in:…

A: Antigen - It is any foreign particle that induces an immune response. Antibody - It is a protein…

Q: This blood protein, also known as an immunoglobulin, is systemic and specific in its effect of…

A: The immune cells in our body responsible for giving protection against different kinds of pathogens.…

Q: During the vascular phase the endothelial cells become sticky and constrict. True False

A: The vascular phase is a stage in the inflammatory response to tissue injury or infection. It is the…

Q: The complement pathway is a series of steps and the final steps lead to an effector function…

A: The complement system helps or “complements” the ability of antibodies and phagocytic cells to clear…

Q: 69. Host Defenses. T cytotoxic lymphocytes exhibit all of the following traits EXCEPT: O secrete…

A: Cell-mediated Immunity is due to the activity of T-lymphocytes just as Humoral Immunity is due to…

Q: Place the following items in order, from simple to most complex. 1. Lymph 2. Basophil 3. Glucose 4.…

A: The complexity of a compound or a structure depends on the components it has. More are the…

Q: Breast feeding confers what type of immunity to an infant? O Artificially acquired active

A: The immune system is the human body's defence mechanism against foreign particles such as bacteria,…

Q: Question 24 Which of the following is not a cell surface receptor? GPCR DNA-associated receptor RTK…

A: Biochemical cell signalling is the method by which cell communicates with each other cells and…

Q: QUESTION 26 IgG, IgA, and IgM are different classes of antibodies. Which part of an antibody best…

A: Antibodies, also known as immunoglobulins, are proteins produced by the immune system in response to…

Q: Question 7 These can explain why men have a higher hematocrit than women except: plasma than women…

A: Hematocrit is the volume of the blood that contains red blood cells ( RBCs ). A low hematocrit…

Q: QUESTION 52 Which arrow or t-bar is accomplished through phosphorylation? no DNA damage p16/21 A…

A: The correct option is C The arrow C is accomplished through phosphorylation (because the G1 and S…

Q: Question 22 The lymph node is surrounded by what type of tissue? O Epithelial O Nerve O Muscle…

A: We know that The lymph node is an important part of the lymphatic system. It is small-sized, and it…

Q: T cells. In MHC restriction O Plasma cells are restricted to becoming T cells O CD8 cell restricting…

A: HLA antigen codes are the most important histocompatibility complex (MHC) in white cells and…

Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.