Homework Answers
B7 molecule expressed by mature DC provides T cells the signal 2 for activation.
Dendritic cells are very efficient Antigen Presenting Cells (APCs) . They present antigens through MHC- II to the T- helper cells. Mature dendritic cells also expresses key costimulatory molecules such as B7. First signal is provided by the recognition of MHC II and its antigen by the T- helper cells. B7 molecules on DC bind the CD28 on T-cells.CD28 binding provides signal 2 to T-cell and is necessary for their activation.
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QucouVIZ Not yet answered Marked out of 2.00 Remo Which molecule expressed by mature DC provides...
Question 1 Not yet answered Marked out of 2.00 pFlag question During antigen presentation, contacts are...
Question 1 Not yet answered Marked out of 2.00 pFlag question During antigen presentation, contacts are made between the HLA molecule, the antigenic peptide, and the T cell receptor. Which of the following terms is used to describe the binding characteristic that determines that the T cell receptor sees its specific antigenic peptide in the context of self HLA? Select one: O a. Affinity maturation ob. Allelic exclusion O c. Codominance O d. HLA (or MHC) polymorphism o e. HLA...
Question 2 Not yet answered Marked out of 2.00 p Flag question A four-year-old boy is...
Question 2 Not yet answered Marked out of 2.00 p Flag question A four-year-old boy is learning to ride his bike, but falls and cuts his knee. Two days later, the wound is red and inflamed as it has become infected with the bacterium Staphylococcus aureus. Macrophages phagocytose the bacteria and present staphylococcal peptides to CD4 T cells. Which of the following molecules will be most important in antigen presentation to the CD4 T cells? Select one: O a. Beta-2-microglobulin...
Question 10 Not yet answered Marked out of 2.00 Flag question Three resistors are connected across...
Question 10 Not yet answered Marked out of 2.00 Flag question Three resistors are connected across an ideal 4.0-V DC battery as shown in the figure below. What is the power dissipated in the 6 resistor? 2.00 Www 6.00 120 www Select one: O a. 16 W O b.0.67 W O O c.2.67 W d.4W Next page
Not yet answered Marked out of 2.00 Play question Which of the following antibody classes is...
Not yet answered Marked out of 2.00 Play question Which of the following antibody classes is the most efficient at crossing the placenta to provide the developing fetus protection from pathogens? Select one o a. IgM o b. IgE o c. IgD o d. IgA. o e. IgG1
Question 6 Not yet answered Marked out of 1.00 P Flag question Chemiosmosis ... Select one:...
Question 6 Not yet answered Marked out of 1.00 P Flag question Chemiosmosis ... Select one: O a. refers to harnessing the energy generated by the proton-motive force O b. Occurs primarily during glycolysis O c. is a form of substrate-level phosphorylation O d. Refers to the transfer of glucose across the mitochondrial membrane. Question 7 Not yet answered Marked out of 1.00 Flag question space) (space) (membrane) (mer In this image, where would you expect to see ubiquinone? Select...
Question 19 What does a cost variance measure? Not yet answered Marked out of 2.00 P...
Question 19 What does a cost variance measure? Not yet answered Marked out of 2.00 P Flag question Select one: O A. the volume discounts companies receive when ordering direct materials in large quantities O B. the difference between the cost the company pays and the cost its competitors pay OC. the change in costs over time O D. how well the business keeps unit costs of material and labor inputs within standards Question 20 Not yet answered Luong Machines...
QUESTION 1 Not yet answered Marked out of 2.00 Flag question A survey of 100 business...
QUESTION 1 Not yet answered Marked out of 2.00 Flag question A survey of 100 business executives revealed that all of them read the Financial Times while sixty read the Economist magazine. If an executive is picked at random find the probability that he or she reads either the Financial Times or the Economist Select one: O a.0.4 O b.0.6 Ос. 1 O d.o.5 QUESTION 2 Not yet answered Marked out of 2.00 Flag question One ticket is selected at...
Not yet answered Marked out of 3.00 P Flag question Which molecule would likely have the...
Not yet answered Marked out of 3.00 P Flag question Which molecule would likely have the highest boiling point? Select one: O a. OH o b. O c. O d. HO ОН
ZI QUESTION 2 Let G=Span{2+t, 6-1), then dim G= Not yet answered Marked out of 2.00...
ZI QUESTION 2 Let G=Span{2+t, 6-1), then dim G= Not yet answered Marked out of 2.00 Select one: P Flag question a. None of these b.1 O C.O d. 2 괴 QUESTION 3 Not yet answered 134 Let A=1 3 6 , then det A= [012] Marked out of 2.00 P Flag question Select one: a-2 b. None of these C8 do
Question 29 Not yet answered Marked out of 1.00 P Flag question What is the role...
Question 29 Not yet answered Marked out of 1.00 P Flag question What is the role of substrate-level phosphorylation in glycolysis? Select one: a. a process to synthesize oxygen (02) b. a process to do all of the above (a, b and c) c. a process to synthesize glucose d. a process used to synthesize ATP Question 35 Not yet answered Marked out of 1.00 P Flag question Plants use_to transport sucrose to all regions of the organism. Select one:...
Question 1 Not yet answered Marked out of 2.00 pFlag question During antigen presentation, contacts are made between the HLA molecule, the antigenic peptide, and the T cell receptor. Which of the following terms is used to describe the binding characteristic that determines that the T cell receptor sees its specific antigenic peptide in the context of self HLA? Select one: O a. Affinity maturation ob. Allelic exclusion O c. Codominance O d. HLA (or MHC) polymorphism o e. HLA...
Question 2 Not yet answered Marked out of 2.00 p Flag question A four-year-old boy is learning to ride his bike, but falls and cuts his knee. Two days later, the wound is red and inflamed as it has become infected with the bacterium Staphylococcus aureus. Macrophages phagocytose the bacteria and present staphylococcal peptides to CD4 T cells. Which of the following molecules will be most important in antigen presentation to the CD4 T cells? Select one: O a. Beta-2-microglobulin...
Question 10 Not yet answered Marked out of 2.00 Flag question Three resistors are connected across an ideal 4.0-V DC battery as shown in the figure below. What is the power dissipated in the 6 resistor? 2.00 Www 6.00 120 www Select one: O a. 16 W O b.0.67 W O O c.2.67 W d.4W Next page
Not yet answered Marked out of 2.00 Play question Which of the following antibody classes is the most efficient at crossing the placenta to provide the developing fetus protection from pathogens? Select one o a. IgM o b. IgE o c. IgD o d. IgA. o e. IgG1
Question 6 Not yet answered Marked out of 1.00 P Flag question Chemiosmosis ... Select one: O a. refers to harnessing the energy generated by the proton-motive force O b. Occurs primarily during glycolysis O c. is a form of substrate-level phosphorylation O d. Refers to the transfer of glucose across the mitochondrial membrane. Question 7 Not yet answered Marked out of 1.00 Flag question space) (space) (membrane) (mer In this image, where would you expect to see ubiquinone? Select...
Question 19 What does a cost variance measure? Not yet answered Marked out of 2.00 P Flag question Select one: O A. the volume discounts companies receive when ordering direct materials in large quantities O B. the difference between the cost the company pays and the cost its competitors pay OC. the change in costs over time O D. how well the business keeps unit costs of material and labor inputs within standards Question 20 Not yet answered Luong Machines...
QUESTION 1 Not yet answered Marked out of 2.00 Flag question A survey of 100 business executives revealed that all of them read the Financial Times while sixty read the Economist magazine. If an executive is picked at random find the probability that he or she reads either the Financial Times or the Economist Select one: O a.0.4 O b.0.6 Ос. 1 O d.o.5 QUESTION 2 Not yet answered Marked out of 2.00 Flag question One ticket is selected at...
Not yet answered Marked out of 3.00 P Flag question Which molecule would likely have the highest boiling point? Select one: O a. OH o b. O c. O d. HO ОН
ZI QUESTION 2 Let G=Span{2+t, 6-1), then dim G= Not yet answered Marked out of 2.00 Select one: P Flag question a. None of these b.1 O C.O d. 2 괴 QUESTION 3 Not yet answered 134 Let A=1 3 6 , then det A= [012] Marked out of 2.00 P Flag question Select one: a-2 b. None of these C8 do
Question 29 Not yet answered Marked out of 1.00 P Flag question What is the role of substrate-level phosphorylation in glycolysis? Select one: a. a process to synthesize oxygen (02) b. a process to do all of the above (a, b and c) c. a process to synthesize glucose d. a process used to synthesize ATP Question 35 Not yet answered Marked out of 1.00 P Flag question Plants use_to transport sucrose to all regions of the organism. Select one:...
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