Which T-lymphocytes activate the B-cell response? suppressor T-cells. cytotoxic T-cells. helper T-cells.. memory T-cells. Which of the following is TRUE regarding bacteria? O Bacteria help produce vitamins in our digestive system Bacteria help clean our intestinal walls and help digest food O Bacteria are involved in the production of a variety of foods we consume All of the above are true

Which T-lymphocytes activate the B-cell response? suppressor T-cells. cytotoxic T-cells. helper T-cells.. memory T-cells. Which of the following is TRUE regarding bacteria? O Bacteria help produce vitamins in our digestive system Bacteria help clean our intestinal walls and help digest food O Bacteria are involved in the production of a variety of foods we consume All of the above are true

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter22: Genes And Disease: Cancer

Section: Chapter Questions

Problem 9SQ

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Figure 42.11 Which of the following statements about T cells is false? Helper T cells release cytokines while cytotoxic T cells kill the infected cell. Helper T cells are CD4+, while cytotoxic T cells are CD8+. MHC II is a receptor found on most body cells, while MHC I is a receptor found on immune cells only. The T cell receptor is found on both CD4+ and CD8+ T cells.
The humoral immune response depends on which cells? a. TC cells b. B cells c. B and TH cells d. TC and TH cells
The Complement System Kills Microorganisms The complement system supplements the inflammatory response by directly killing microorganisms. Describe the life cycle of complement proteins, from their synthesis in the liver to their activity at the site of an infection.
What else can be done, in order to eliminate bacterial cells inside an organism, if phagocytosis doesn't work on certain bacteria that produce catalase and other T-cells don't work to kill bacteria either? Antibiotics is the only option I can think of, possibly. SHORT ASWER PLEASE
High numbers of “good” bacteria are foundin the intestine and on the skin. The immune system needs to protect these areasfrom invading microbes, but cannot respond as strongly to the normal microflorawithout causing problems. What are somepossible ways that immune cells coulddistinguish “good” from “bad” bacteria?
Which type of immune response is most directlyeffective against bacteria?a. natural killer cellsb. complementc. cytotoxic T cellsd. helper T cells
Which of the following is true about the immune system? CHeck all that apply. Neutrophils are abundant granulocytes that phagocytose bacteria, whereas eosinophils eliminate helminth parasites Anatomic barriers include epithelial cells, macrophages, dendritic cells Dendritic cells and macrophages are phagocytic cells that can present antigen T lymphocytes Innate immune cells are macrophages, granulocytes, natural killer cells and adaptive immune cells are B and T cells B and T cells originate from myeloid progenitor, whereas monocytes and neutrophils from lymphoid progenitor.
An essential property of the immune system is self-regulation. An immune response that is not adequate can lead to immunodeficiency, whereas an immune response that is excessive can lead to conditions from allergic responses to autoimmune diseases. Which of these is not an example of a breakdown of the self-regulation of the immune system?a. Multiple sclerosisb. Huntington diseasec. Systemic lupusd. Fibromylagia
Approximately 70% of the body’s immune system cells are located in or near the wall of the lower intestinal tract (intestines). Can you suggest a reason for this phenomenon?
An infant appears healthy until about 9 months of age, when he develops severe bacterial infections, one after another. Fortunately, theinfections are treated successfully with antibiotics. When infectedwith the measles and other viral diseases, the infant recovers withoutunusual difficulty. Explain the different immune responses to theseinfections. Why did it take so long for this disorder to become apparent? (Hint: Consider IgG.)
Put the following steps in order for cell-mediated immunereactions:(a) Differentiated T cells include T helper, delayed hyper-sensitivity, cytotoxic, and memory T cells that all havedifferent immunological functions depending on the an-tigen presented.(b) Antigen-presenting cells (macrophages and dendriticcells) phagocytize pathogens, ingesting and degradingthem into pieces which are transported to the surface ofthe cell.(c) T cells bearing the corresponding receptor for the pre-sented antigen bind to it and become activated only ifthe appropriate MHC is also present.(d) Some pieces of the pathogen’s antigens are processedby inserting them into the antigen-presenting cell’smembrane and are held in place by class II majorhistocompatibility complex (MHCII) proteins.(e) Activated T cells are stimulated to divide and differen-tiate into different types of T cells, including memorycells
The humoral immune response depends on which cells? a. TC cells b. B cells c. B and TH cells d. TC and TH cells