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T cell activation results in all of the following except. (a) activation of cellular mitosis genes,...
Which of the following is a step required for T cytotoxic cell activation - SELECT ALL...
Which of the following is a step required for T cytotoxic cell activation - SELECT ALL THAT APPLY Group of answer choices activation of the complement antigen binding to antibody CD4 binding to MHC-I T cell receptor (TCR) binding to antigen Which of the following is a direct consequence of T cytotoxic cell activation -SELECT ALL THAT APPLY Group of answer choices phagocytosis release of perforin and granzyme activation of the complement system release of alpha and beta interferon death...
1. Which of the following is an example of cells undergoing mitosis and cytokinesis? a new...
1. Which of the following is an example of cells undergoing mitosis and cytokinesis? a new embryo growing a tree producing new branches dead skin cells being replaced a wound healing over with a scar All of the above. 2. Cell division is used for all of the following EXCEPT replacing blood cells that have died. production of hormones. growth of a single cell into a baby. growth of a child into an adult. replacing skin cells separated by a...
Binding of IL6 by its receptor results in which of these cellular responses? a) Activation of...
Binding of IL6 by its receptor results in which of these cellular responses? a) Activation of JAK b) Translocation of STAT3 into the nucleus c) All of these d) Phosphorylation of STAT3
93. IL-2 acts on several cell types thus regulating multiple immune processes. IL-2 is said to...
93. IL-2 acts on several cell types thus regulating multiple immune processes. IL-2 is said to be: A. Antagonistic B. Cascade inducible C. Synergistic D. Pleiotropic 94. All of the following reasons contribute to the current low usages of cytokine therapy in medicine EXCEPT: A. Cytokines have a short half-life, usually less than 10 min. B. Cytokines may be bound by soluble receptors and never reach their target cell. C. Cytokine injections often cause an allergic reaction because rabbits make...
T/F 1. Viral integration into the cellular genome may convert a proto-oncogene into a transforming oncogene  
T/F 1. Viral integration into the cellular genome may convert a proto-oncogene into a transforming oncogene 2. Immunosuppressive drugs used to prevent graft rejection include drugs (like Imuran) that result in generalized suppression of all dividing cells and drugs that target T cells (like cyclosporine A) 3. IFNα has a direct antitumor effect, while TNFα has an indirect cytotoxic effect on tumor cells 4. Oncogenes are unique genes of a normal cell that only function to promote cell transformation. 5. Attributes of tumor cells include lack...
The cell is the basic unit of life. All cellular structures exhibit special functions. Match the...
The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "D"? A. directs cellular activities, contains DNA B. contains digestive enzymes C. outer boundary of cell, controls entry and exit of substances D. major site ATP synthesis when oxygen is available E. site of protein synthesis
Upon encountering an appropriate MHC Class I on an infected cell: Select one: a. naive T1...
Upon encountering an appropriate MHC Class I on an infected cell: Select one: a. naive T1 cells secrete cytokines b. TH1 cells differentiate into Th2 cells O c. CD8 cytotoxic cells destroy the infected cell O d . CD4 T cells release IL-4 e. BCRs become cross linked and signaling occurs All of the following are characteristic of NK cells EXCEPT Select one: O a. they express Toll-like receptors O b. they are tolerant of healthy cells c. they express...
1. All of the following are parts of the cellular respiration process EXCEPT a. glycolysis b....
1. All of the following are parts of the cellular respiration process EXCEPT a. glycolysis b. electron transport chain c. Citric acid cycle d. the light reactions 2. The area of the chloroplast that contains chlorophyll is called a. thylakoid membrane b. stroma c. plasma membrane d. inner membrane 3. Which of the following describes a difference between mitosis and meiosis? a. Only mitosis includes interphase. b. Meiosis occurs all the time and mitosis only occurs sometimes. c. Meiosis only...
Cytochrome c is an important molecule in initiating apoptosis in cells. All of the following regarding...
Cytochrome c is an important molecule in initiating apoptosis in cells. All of the following regarding cytochrome c are true EXCEPT: A) The release of cytochrome c into the cytoplasm is an important step in apoptosis initiation. B) The loss of cytochrome c from the electron transport chain blocks ATP synthesis by oxidative phosphorylation. C) Loss of cytochrome c from the inner mitochondrial membrane results in increased formation of reactive oxygen species. D) Bax proteins mediate cytochrome c release. E)...
35. Both humoral and cellular immunity share the following attributes except a. distinguishes self from non-self...
35. Both humoral and cellular immunity share the following attributes except a. distinguishes self from non-self b specificity mory first-line of defense e. involve the T-cell antigen pathway 36. Which of the following is common to viruses and antibodies? a. they are cell specific b. they can be cytolytic c. they can be phagocytic d. they contain lysozyme e. they contain nucleic acids 37. What non-specific immune component is directly responsible for the lysis of invading microorganisms? chemotaxis b. membrane...
1. Which of the following is an example of cells undergoing mitosis and cytokinesis? a new embryo growing a tree producing new branches dead skin cells being replaced a wound healing over with a scar All of the above. 2. Cell division is used for all of the following EXCEPT replacing blood cells that have died. production of hormones. growth of a single cell into a baby. growth of a child into an adult. replacing skin cells separated by a...
The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "D"? A. directs cellular activities, contains DNA B. contains digestive enzymes C. outer boundary of cell, controls entry and exit of substances D. major site ATP synthesis when oxygen is available E. site of protein synthesis
Upon encountering an appropriate MHC Class I on an infected cell: Select one: a. naive T1 cells secrete cytokines b. TH1 cells differentiate into Th2 cells O c. CD8 cytotoxic cells destroy the infected cell O d . CD4 T cells release IL-4 e. BCRs become cross linked and signaling occurs All of the following are characteristic of NK cells EXCEPT Select one: O a. they express Toll-like receptors O b. they are tolerant of healthy cells c. they express...
35. Both humoral and cellular immunity share the following attributes except a. distinguishes self from non-self b specificity mory first-line of defense e. involve the T-cell antigen pathway 36. Which of the following is common to viruses and antibodies? a. they are cell specific b. they can be cytolytic c. they can be phagocytic d. they contain lysozyme e. they contain nucleic acids 37. What non-specific immune component is directly responsible for the lysis of invading microorganisms? chemotaxis b. membrane...
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bulk flow (in respiration) moves blood from?
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