What Is Life? A Guide to Biology with Physiology
4th Edition
ISBN: 9781319065447
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 27, Problem 10MC
Summary Introduction
Introduction:
HIV attacks and impairs the immune system of the infected person.
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When a body’s immune system attacks the body’s own cells, this is calleda. an inflammatory response.b. a temperature response.c. an autoimmune response.d. an allergic response.
The vascular changes of inflammationa. lead to an increase in bacterial cells at the injury site.b. decrease the number of leukocytes at the injury site.c. allow plasma proteins to move easily from the bloodstream to theinjury site.d. increase the number of antibodies at the injury site.e. activate lymphocytes.
Joseph Lister was famous for:
A) identifying bacteria that cause disease
B) antibiotics
C) procedures to sterilize surgical equipment
D) none of the above
Which of the following is not part of the human immune response?
A) producing antibodies
B) the skin acting as a physical barrier
C) the lymphatic system
D) the production of antibiotics
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What Is Life? A Guide to Biology with Physiology
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- Which of the formed elements arise from myeloid stem cells? B cells natural killer cells platelets all of the abovearrow_forwardA person shows unwelcome immunogenic reactions while exposed to certain substances.(a) Name this condition.(b) What common term is given to the substances responsible for this condition?(c) Name the cells and the chemical substances released which cause such reactions.arrow_forwardWhich of the following sudden changes might be a result of an infection? a. increase in the activity of white blood cells b. decrease in the activity of antigens produced by the mitochondria c. decrease in the amount of DNA present in the nuclei of cells d. increase in the number of red blood cellsarrow_forward
- Which cells produce antibodies? a. Neutrophils. b. Dendritic cells. c. Cytotoxic T cells. d. Plasma cells. The role of the humoral immune response is to a. kill infected cellsb. fight pathogens found in body fluid c. prevent pathogens from entering the body d. initiate an inflammatory responsearrow_forwardfever helps the body fight infection in which of the follwoing ways? a. fever causes the creation of lysosomes b. increased body temperature decreases phagocytosis c. fever inhibits the growth of some microorganisms d. fever increases capillary permeabilityarrow_forwardWhy is the secondary immune response so much stronger than theprimary response?a. Because high concentrations of antibodies are already presentb. Because the phagocytes present the antigens more rapidlyc. Because memory B cells can rapidly convert to plasma cellsd. Because protein synthesis occurs more quickly in memory cellsarrow_forward
- Suppose 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_forward__________________ is a condition that results when cytotoxic T cells attack the body’s own cells.a. An allergic response b. Autoimmune disease c. Passive immunityd. Active immunityarrow_forwardImmunosuppression is a lowering of the responsiveness ofthe immune system to materials it recognizes as foreign and isproduced by _________and_________ .(a) antibodies and foreign antigens(b) NK cells and allergen desensitizers(c) radiation and cytotoxic drugs(d) hypersensitivity and transplant rejection(e) a and darrow_forward
- What is the function of the blood-thymus barrier?a. It protects maturing T-lymphocytes from antigens inthe blood.b. It filters the blood and starts an immune response whennecessary.c. It subdivides the thymus into a cortex and a medulla.d. It forms thymic corpuscles.arrow_forwardImmunoglobins help eliminate the pathogen through the process of: A. Release of hydrolytic enzymes on the pathogen B. Agglutination and precipitation C. Direct phagocytosis D. Activating plateletsarrow_forwardHow does HIV (human immunodeficiency virus) lead to AIDS (acquired immune deficiency syndrome)/lead to opportunistic infections? Select one: a. HIV kills/disables helper T cells b. HIV disables eating white blood cells of non specific immune system c. HIV kills your gut bacteria d. HIV disables B cells so they can’t produce antibodiesarrow_forward
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