Homework Answers
The Correct answer will be option 'A' i.e. proliferate to form clones that undergo additional rounds of somatic mutation. This is key step in affinity maturation. It take place in small germinal centre of secondary lymphoid tissue (surface of B cell). Somatic hypermutation is the phenomenon which helps in the generation of high affinity surface immunoglobulins on B cells. Initially, B cell have IgM which have low affinity for the Ag, with the help of highly mutagenic cytidine deaminase; class switching take place and produce IgG which have high affinity. This prevent the cell from apoptosis and high affinity for the Ag.
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Que Question 1 1 pts bue Que Que Que B cells that express low affinity immunoglobulins...
please answer all 4 questions Question 11 3 pts A B-cell may be activated by: O...
please answer all 4 questions
Question 11 3 pts A B-cell may be activated by: O A TEH cell O Another B-cell O A cytotoxic T-cell O A natural killer T-cell Question 12 3 pts What happens to centrocytes that have high-affinity (tightly-binding) antigen receptors after somatic hypermutation? They receive survival signals from TFH cells o They cannot process antigen or present it to TFH cells o They undergo phagocytosis by dendritic cells in the "light zone" o They die...
ANSWER ALL QUESTIONS FULLY AND CORRECTLY 5-1 T cells recognize antigen when the antigen a. forms...
ANSWER ALL QUESTIONS FULLY AND CORRECTLY
5-1 T cells recognize antigen when the antigen a. forms a complex with membrane-bound MHC molecules on another host-derived cell b. is internalized by T cells via phagocytosis and subsequently binds to T-cell receptors in the endoplasmic reticulum c. is presented on the surface of a B cell on membrane-bound immunoglobulins d. forms a complex with membrane-bound MHC molecules on the T cell e. bears epitopes derived from proteins, carbohydrates, and lipids. 5-2 a....
Question 2 1 pts on of In which of the following ways do B cells and...
Question 2 1 pts on of In which of the following ways do B cells and T cells differ? effector B cells secrete their receptors, but effector T cells do not B cells, but not T cells, generate their receptors through a process that cuts, splices, and modifies receptor genes B cell receptors are collectively able to bind a huge variety of potential antigens, but T cell receptor bind a more limited variety of antigens the antigen receptor in T...
Question 36 1 pts 36. You have a population of mammalian cells growing in media containing...
Question 36 1 pts 36. You have a population of mammalian cells growing in media containing enough growth factors. Which of the following graphs corresponds to these cells when their DNA content is analyzed 24 hours after they are induced to express high levels of a mutant form of Rb protein that cannot be phosphorylated? (Note: this cell line has its cell cycle around 22 hours) Control cells #1 #2 #3 #4 #5 #6 Cell number JAN ul. 2 2...
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...
1. According to the paper, what does lactate dehydrogenase (LDH) do and what does it allow...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
1. Oral acetaminophen has been ordered for a young child who has a fever. A liquid...
1. Oral acetaminophen has been ordered for a young child who has a fever. A liquid form has been obtained by the nurse to increase the chance of problem free administration. Prior to administration, the nurse is going through the rights of medication administration. When confirming the right dose, what term is the most appropriate? a. "160 mg" b. "one teaspoon" c. "one third of a tablespoon d. "SmL 2. A pregnant woman asks why she needs to take a...
please answer all 4 questions
Question 11 3 pts A B-cell may be activated by: O A TEH cell O Another B-cell O A cytotoxic T-cell O A natural killer T-cell Question 12 3 pts What happens to centrocytes that have high-affinity (tightly-binding) antigen receptors after somatic hypermutation? They receive survival signals from TFH cells o They cannot process antigen or present it to TFH cells o They undergo phagocytosis by dendritic cells in the "light zone" o They die...
ANSWER ALL QUESTIONS FULLY AND CORRECTLY
5-1 T cells recognize antigen when the antigen a. forms a complex with membrane-bound MHC molecules on another host-derived cell b. is internalized by T cells via phagocytosis and subsequently binds to T-cell receptors in the endoplasmic reticulum c. is presented on the surface of a B cell on membrane-bound immunoglobulins d. forms a complex with membrane-bound MHC molecules on the T cell e. bears epitopes derived from proteins, carbohydrates, and lipids. 5-2 a....
Question 2 1 pts on of In which of the following ways do B cells and T cells differ? effector B cells secrete their receptors, but effector T cells do not B cells, but not T cells, generate their receptors through a process that cuts, splices, and modifies receptor genes B cell receptors are collectively able to bind a huge variety of potential antigens, but T cell receptor bind a more limited variety of antigens the antigen receptor in T...
Question 36 1 pts 36. You have a population of mammalian cells growing in media containing enough growth factors. Which of the following graphs corresponds to these cells when their DNA content is analyzed 24 hours after they are induced to express high levels of a mutant form of Rb protein that cannot be phosphorylated? (Note: this cell line has its cell cycle around 22 hours) Control cells #1 #2 #3 #4 #5 #6 Cell number JAN ul. 2 2...
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...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
1. Oral acetaminophen has been ordered for a young child who has a fever. A liquid form has been obtained by the nurse to increase the chance of problem free administration. Prior to administration, the nurse is going through the rights of medication administration. When confirming the right dose, what term is the most appropriate? a. "160 mg" b. "one teaspoon" c. "one third of a tablespoon d. "SmL 2. A pregnant woman asks why she needs to take a...
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