Homework Answers
Answer [Q-13]: Option C. IgG
Explanation: It is the one that constitutes of 75% of all the Ig in our body. And it is the only that crosses the placenta in order to protect new born babies from infections.
Incorrect options:
- Rest all are developed in the baby itself, by various modes of immunity.
Answer [Q-14]: Option A. IgA
Explanation: IgA is the one that is found in many of the bodily secretions like tears, saliva, colostrum, mucus.
Incorrect options:
- Rest all are found in other places and not mainly in body secretions.
Answer [Q-15]: Option E. Are a portion of antigen recognized by antibody AND may be approximately 10-25 amino acids in length.
Explanation: Epitopes are the ones which are present on the antigen and are recognized by the immunity system of our body. They are approx of the size between 10-25 amino acids.
Incorrect options:
- Option A: They are not part of the antibody, but of antigen.
- Option B: They are antigenic determinants and not T cell receptors. T cells are found in immune system.
Answer [Q-16]: Option A. plasma cells
Explanation: Antibodies are mainly made up of B cells and Plasma cells. Plasma cells are also white blood cells that secrete antibodies when an immune response is triggered.
Incorrect options:
- Natural Killer Cells secrete cytokine like IFN gamma.
- Phagocytes don't secrete antibodies. They engulf bacteria and
completely tears it down.
- T cells also secrete cytokines.
Add Answer to:
QUESTION 13 The only class of antibody that can cross the placenta is IgA. IgD. IgG....
1. The first line of defense include all of the following except (a) mucous membranes and...
1. The first line of defense include all of the following except (a) mucous membranes and skin (b) Inflammation and fever (c) physical and chemical barriers (d) coughing and sneezing 2. When B cells or T cells recognize an antigen they will eventually make many copies of themselves. Which of the following is the correct order of events? (a) Clonal selection, clonal expansion, clonal deletion (b) clonal expansion, clonal selection, clonal deletion (c) clonal deletion, clonal selection, clonal expansion (d)...
Which of the following statements is correct about the production of antibodies after stimulation of B...
Which of the following statements is correct about the production of antibodies after stimulation of B cells by antigen? Multiple Choice a. Later, under the influence of T-helper cells, IgM-secreting plasma cells may stop producing and secreting IgM in favor of another antibody class, usually IgD. b. Pentameric IgM serves as the B-cell receptor for antigen, and monomeric IgM is the first type of antibody secreted after B-cell activation. c. Class switching occurs when a cell secreting IgM changes the...
QUESTION 5 Which of the following is CORRECT? Only IgG and IgM can result in complement...
QUESTION 5 Which of the following is CORRECT? Only IgG and IgM can result in complement fixation or activation. The initial response to an antigen produces more antibodies than the second or subsequent exposures. The initial response to an antigen is more rapid than the second or subsequent exposures. Only IgG can cross the placenta. IgM and IgE are both pentamers. They can bind 10 antigens. The antibodies all have different variable regions by same constant regions QUESTION 6 Select...
20. Defective function of which of the following proteins will result in failed antigen presentation to...
20. Defective function of which of the following proteins will result in failed antigen presentation to CD8 T cells? a. HLA-DM b. TAP c. Cathepsins d. CD1d 21.True or False: An antibody proteolytically cleaved by pepsin yields a fragment with higher avidity to the cognate antigen than an antibody cleaved by papain. a. True b. False 22.The structure recognized by an antibody (that is, the epitope) is the ________ and the regions of the antibody with significant sequence variation are...
Could I get all the answers please,, thank you,, Question 35 (2 points) Which cell type...
Could I get all the answers please,, thank you,, Question 35 (2 points) Which cell type is capable of producing antibodies? Question 35 options: A) B cells B) T cells C) macrophages D) neutrophils E) both A and B Question 36 (2 points) This antibody is pentameric in structure and is the better at stimulating complement than other antibody classes (can form a staple conformation): Question 36 options: A) IgM B) IgE C) IgD D) IgA E) IgG Question 37...
All the answers please,. Question 23 (2 points) How many Fab fragments are found on one...
All the answers please,. Question 23 (2 points) How many Fab fragments are found on one IgG antibody? Question 23 options: A) 1 B) 3 C) 2 D) 4 E) 10 Question 24 (2 points) Which of the following is more likely to be loaded with endogenous (intracellular) peptide? Question 24 options: A) MHC class II B) MHC class I C) CD28 D) T cell receptor Question 25 (2 points) Which antibody can cross epithelial layers to enter the intestinal...
12. Antimicrobials may a. produce allergic reactions b. produce toxic effects not only to the microbe...
12. Antimicrobials may a. produce allergic reactions b. produce toxic effects not only to the microbe but to the hoat c. kill bacteria in our bodies all the above 13. All of the following pertain to the role ofactivated helper T cells in cellular mediatesd immunity except a. differentiation into memory Th cells b. recognize MHC with antigenic peptide on macrophages c. activate Te cells indirectly lead to cytolysis through complement e. indirectl y lead to phagocytosis of large microorganisms...
immunology practing samples and not sure if my answers correct. 1. NK cells are effective against...
immunology
practing samples and not sure if my answers correct.
1. NK cells are effective against viral infections because many virus infected cells a. are susceptible to lysis b. are susceptible to phagocytosis c. show reduced levels of MHC class I molecules d. show reduced levels of MHC class II molecules e. none of the above 2. Arachidonic acid serves as a substrate in the lipoxygenase and cyclooxygenase pathways resulting in the production of a. histamine, leukotrienes b. leukotrienes, prostaglandins...
Which electrolyte measurement is least affected by hemolysis? a. Calciumb. b- Magnesium c. Potassium d. Total...
Which electrolyte measurement is least affected by hemolysis? a. Calciumb. b- Magnesium c. Potassium d. Total Bilirubin Question 2 of 35 Required Question Which of the following should cause specimen rejection for platelet aggregation studies? a. The sample hematocrit is too high .b. The sample is hemolyzed. c. The sample is over-anticoagulated. d. The sample platelet count is too low. Question 3 of 35 Required Question Which of the following is usually positive in a patient with a urinary tract...
BIOL 1620o, Spring 2019 NAME (Last, Preferred First): Date: 45. What is the most important means by which capillay exchange occurs? 53. Which of the following organs does NOT contain lymphatic...
BIOL 1620o, Spring 2019 NAME (Last, Preferred First): Date: 45. What is the most important means by which capillay exchange occurs? 53. Which of the following organs does NOT contain lymphatic tissue? A. liver B. spleen C. lingual tonsils A. exocytosis B. diffusiorn C. ATP powered pumps D. facilitated diffusion E. pharyngeal tonsils. 46.According to Poiseuille's law A. blood flow is not related to resistance. B. ph of the blood influences flow C. viscosity of the blood is not related...
QUESTION 5 Which of the following is CORRECT? Only IgG and IgM can result in complement fixation or activation. The initial response to an antigen produces more antibodies than the second or subsequent exposures. The initial response to an antigen is more rapid than the second or subsequent exposures. Only IgG can cross the placenta. IgM and IgE are both pentamers. They can bind 10 antigens. The antibodies all have different variable regions by same constant regions QUESTION 6 Select...
12. Antimicrobials may a. produce allergic reactions b. produce toxic effects not only to the microbe but to the hoat c. kill bacteria in our bodies all the above 13. All of the following pertain to the role ofactivated helper T cells in cellular mediatesd immunity except a. differentiation into memory Th cells b. recognize MHC with antigenic peptide on macrophages c. activate Te cells indirectly lead to cytolysis through complement e. indirectl y lead to phagocytosis of large microorganisms...
immunology
practing samples and not sure if my answers correct.
1. NK cells are effective against viral infections because many virus infected cells a. are susceptible to lysis b. are susceptible to phagocytosis c. show reduced levels of MHC class I molecules d. show reduced levels of MHC class II molecules e. none of the above 2. Arachidonic acid serves as a substrate in the lipoxygenase and cyclooxygenase pathways resulting in the production of a. histamine, leukotrienes b. leukotrienes, prostaglandins...
BIOL 1620o, Spring 2019 NAME (Last, Preferred First): Date: 45. What is the most important means by which capillay exchange occurs? 53. Which of the following organs does NOT contain lymphatic tissue? A. liver B. spleen C. lingual tonsils A. exocytosis B. diffusiorn C. ATP powered pumps D. facilitated diffusion E. pharyngeal tonsils. 46.According to Poiseuille's law A. blood flow is not related to resistance. B. ph of the blood influences flow C. viscosity of the blood is not related...
Most questions answered within 3 hours.
-
Using MARS simulator, write MIPS programs according to
the following scenarios: Receive a positive integer number...
asked 1 hour ago -
An object in front of a concave mirror has a real image that is
11.5 cm...
asked 1 hour ago -
Consider the reaction, C3 H8 + O2 --> CO2 + H2O. How many
moles of O2...
asked 3 hours ago -
You and your opponent both roll a fair die. If you both roll the
same number,...
asked 3 hours ago -
In a study of the accuracy of fast food​ drive-through orders,
Restaurant A had 257 accurate...
asked 3 hours ago -
Identify and describe in detail the four categories of
institutions that could be included in a...
asked 3 hours ago -
In python
class Customer:
def __init__(self, customer_id, last_name, first_name, phone_number, address):
self._customer_id = int(customer_id)
self._last_name =...
asked 3 hours ago -
What is an example of a limitation in implementing a new
ERP system and how it...
asked 3 hours ago -
In a section of 9.7cm of an artery with a radius of 2.6mm there
is a...
asked 3 hours ago -
the two carboxylic acid groups of aspartic acid have different
acidities with pKa values of 2.1...
asked 3 hours ago -
Would CuCO3 aqueous salt combined with calcium chloride
form a solid precipitate? If so, what would...
asked 3 hours ago -
How do ECM Solutions assist in embedding a culture of continuous
improvement in an organization? (Project...
asked 3 hours ago