Log in
Biology
2
answers
0
watching
29
views
13 Dec 2019

Which one(s) is/are correct about diapedesis?

1) Diapedesis is a crucial feature of innate immunity.
2) Impairment of diapedesis would lead to persistent bacterial infections.
3) Diapedesis is preceded by margination, rolling and adhesion, and followed by chemotaxis and phagocytosis.

Watch
2
answers
0
watching
29
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Get unlimited access
Already have an account? Log in
Share
Nestor Rutherford
Nestor RutherfordLv2
17 Dec 2019
Get unlimited access
Already have an account? Log in
Share

Related textbook solutions

Molecular Cell Biology
8 Edition,
Lodish
ISBN: 9781464183393
Biology: Science for Life with Physiology
6 Edition,
Belk
ISBN: 9780134555430
Biology
2nd Edition, 2013
Openstax
ISBN: 9781947172517
Concepts of Biology
OER Edition,
Openstax
ISBN: 9781938168116
Essentials of Biology
5 Edition,
Mader
ISBN: 9781259660269

Related questions

1)a. Bacterium W is grown under aerobic conditions. However,this organism has mutated so it cannot convert pyruvic acid intoacetyl CoA. One would expect the NET ATP yield per molecule ofglucose for this organism to be: (assume fermentation does notoccur)

A-4 B-2 C-36 D-8

b. Production of pyrogens does NOT result in the following: 2)A) slows the rate of microbial growth B) stimulation of thehypothalamus C) speeds tissue repair D) stops interferon gammaproduction.

c.Competitive exclusion of pathogens can best be describedas:
A) innate immunity by producing sebum
B) adaptive immunity by making antibodies
C) innate immunity preventing the adherence of pathogens
D) adaptive immunity by making antibiotics

d.A bacterial toxin breaks cell to cell contacts in epitheliallayers and allows bacteria to spread within
and invade deeper into tissues. This toxin is:

A) streptokinase B) hyaluronidase C) coagulase D)endotoxin

1- The drug chloroquine raises the pH of endosomes, How willthis affect antigen processing and presentation by class IIMHC?


2- A common approach to vaccine development has been the use ofa viral vector such as vaccinia virus to carry genetic informationof a pathogen into an individual. The vaccinia virus infection(which does not cause disease in most individuals) would then leadto production of proteins from the pathogen and an immune response.Such an approach has been very successful for viruses but has notbeen successful for most bacterial infections. Why?


3- The pathogen Listeria monocytogenes enters cellsthrough phagocytosis but escapes from the phagosome before it isdestroyed. Would patients who are deficient in class I MHC bebetter or worse hosts for this pathogen than normal individuals?Why?

  1. What common cytokines induce differentiation of TH1 and TH2subsets?
  2. Put the number of the correct description from Column B beforeeach term in Column. Use each term only once.
  3. Column A Column B

    ___ cytokines
    ___ Tc cell
    ___ pathogen
    ___ active immunity
    ___ MHC molecule
    ___ epitope
    ___ passive immunity
    ___ plasma cells
    ___ Th cell
    ___ adjuvant

    1. generates an immune response after vaccination
    2. the direct transfer of a specific antibody into a host
    3. B cell that secretes an antibody
    4. displays CD8 glycoproteins on its surface
    5. organism that causes a disease
    6. presents antigens to TCR can recognize it
    7. displays CD4 glycoproteins on its surface
    8. immunologically active region of an antigen
    9. enhances the immunogenicity of antigens
    10 molecules that signal cells to perform functions
  4. Explain why burn victims are at extreme risk for infection.Which type of immunity is compromised in these patients?
  5. What are the three types of cells capable of phagocytosis? Howare microbes recognized by phagocytic cells?
  6. What do reactive oxygen species (ROS) and reactive nitrogenspecies (RNS) do to microbial cells? List one reactive oxygenspecies that phagocytic cells produce
  7. Where are Toll-like receptors (TLRs) located? What TLR wouldrecognize a bacterium that possesses a flagellum? What result doesTLR-bacterium binding produce and how would that trigger an innateimmune response?
  8. What is the acute phase response (APR)? What are the maincytokines and a few of the proteins are involved in it? What doesthis response contribute to innate immunity?
  9. What is septic shock? Describe the role of LPS in causingsepsis.

Weekly leaderboard

Home
Homework Help 3,900,000
Biology 460,000
Start filling in the gaps now
Log in