Concept explainers
Introduction:
Insect immunity is the immune response produced by the insect against foreign antigens. It involves various modes of reactions towards an antigen such as the production of antibacterial digestive enzymes, phagocytosis by hemocytes and the production of antimicrobial peptides.
Answer to Problem 1TYU
Correct answer:
The activation of the natural killer cells is not a part of the insect immunity. Therefore, option (B) is correct.
Explanation of Solution
Reason for the correct statement:
The natural killer cells are not produced in the in case of the insect immunity.
Option (B) is given as “activation of natural killer cells”.
As “the activation of the natural killer cells is not a part of the insect immunity” it is the right answer.
Hence, option (B) is correct.
Reason for the incorrect statement:
Option (A) is given as “antibacterial digestive enzyme”.
Antibacterial digestive enzymes are produced by the insects. Since it is a part of the insect immunity, so, it is a wrong answer.
Option (C) is given as “phagocytosis by hemocytes”.
Phagocytosis is done by the hemocytes in the insect immunity. Since it is a part of the insect immunity, so, it is a wrong answer.
Option (D) is given as “production of antimicrobial peptides”.
Antimicrobial peptides are produced by the insect immunity. Since it is a part of the insect immunity, so, it is a wrong answer.
Hence, options (A), (C), and (D) are incorrect.
The activation of the natural killer cells is not a part of the insect immunity. Immunity of insects involves various modes of reactions towards an antigen such as the production of antibacterial digestive enzymes, phagocytosis by hemocytes and the production of antimicrobial peptides.
Want to see more full solutions like this?
Chapter 35 Solutions
CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
- Choose the combination of answers that most accurately completes the statement. In what process is tumor necrosis factor (TNF) not involved? a. chemotaxis of phagocytes b. fever c. the infl ammatory response d. the classic complement pathwayarrow_forwardSuppose a person recovers normally from viral infections, but then gets the same viral infections over and over again- unlike the rest of us. A. What is probably wrong –B cells, helper T cells and/or cytotoxic T cells? B. Should this person be at a higher risk of cancer than the rest of us? C. Should this person be able to lyse bacterial cells as well as the rest of us? D. Should this person tolerate a graft (from an unreated person) better than you are me?arrow_forwardIn what process is tumor necrosis factor (TNF) not involved?a. chemotaxis of phagocytesb. fever c. the inflammatory responsed. the classic complement pathwayarrow_forward
- Which pathway of complement activation acts in conjunction with the action of antibodies? A. the lectin pathway В. the alternative pathway C. the classical pathway D. the attack pathwayarrow_forwardThis chemical is released by virus-infected cells to decrease the spread of virus to nearby cells. a. interferon b. bradykinin c. perforin d. complementarrow_forwardA patient with a history of asthma and eczema has a higher than normal concentration of IgE in their blood. This predisposes them to what? A. Catalase positive organism infections B. Type I Hypersensitivies C. T cell misactivation D. Lupusarrow_forward
- Microbial products trigger macrophage activation. Match the receptor with the product that it binds. ✓ TLR-4 ✓ TLR-3 ✓ TLR-9 TLR-5 A. Unmethylated DNA B. Double-stranded RNA C. LPS D. Flagellaarrow_forwardAn example of an inflammatory mediator that stimulates vasodilationisa. histamine b. collagen c. complement C5a d. interferonarrow_forwardWhich of the following is TRUE about B cells? A. are lymphocytes B. become mature in the thymus C. are responsible for cell-mediated immunity D. are produced in the adult spleenarrow_forward
- Which cytokine does not activate NK cells early in a viral infection? a. IFN-a b. IFN-b c. IFN-g d. IL-12 e. IL-15arrow_forwardWhich of these statements about complement proteins C3a and C5a is false?a. They are released during the complement fixation process.b. They stimulate chemotaxis of phagocytic cells.c. They promote the activity of phagocytic cells.d.They produce pores in the victim plasma membrane.arrow_forwardSelect the incorrect statement regarding the temperature of the immune system. A. Interleukin-1 is a pyrogen, which can cause the neurons in the hypothalamus to raise the body's temperature, producing a fever. B. Fevers cause the liver and spleen to store sodium and potassium which bacteria need for their growth and metabolism. C. Fevers above 105∘∘F can be fatal. D. Fever contributes to the body's defense by stimulating phagocytosis E. When macrophages encounter invading cells, they release interleukin-1, which is carried to the brain by the circulatory system.arrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education