BIO120H1 Lecture : Notes taken during lecture

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redtermite204

9 Mar 2011

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Selectins the next type of anchoring junctions. not catenins in this case don"t need to know the actual name. also clustered giving interaction high avidity strong velcro interaction. cells secrete yellow stuff, which cells stick to. weak adhesion and rolling on selectins strong adhesion and integrins. cells will move in between endothelial cells and. Immunoglobulin superfamily: these proteins have immunoglobulin domain, immunoglobulin = antibody, antibody made up of those ig domains, cd4 = ex. of immunoglobulin superfamily protein, multiple ig-like extracellular domains , mediate calcium-independent, homophilic or heterophilic receptor interactions . Like cadherin like proteins outside cell but inside cell, linked to intermediate filaments, instead of actin. adaptor proteins linking adhesion complex to intermediate filaments not catenins, different proteins. strengthening tissues www. notesolution. com: ex. skin, where intermediate filament is keratin. Desmosomes connectin intermediate filaments from cell to cell large network that gives skin a lot of tensile strength.

Related Questions

The following is true about extravasation of white blood cells EXCEPT:

A) It facilitates immunity against infections

B) A heterophilic interactions between an integrin and platelet activation factor is involved

C) Intracellular signal transduction is involved

D) An Ig-superfamily cell adhesion molecule is involved

E) P-selectin on the surface of endothelial cells is involved

describe the ssimilarities between the immunoglobulinsuperfamily protein and cadherinmediated cell cellinteractions.

silverworm125

Exotoxins are ______.

Select one:

a. antiphagocytic factors

b. lipopolysaccharides

c. proteins secreted by living bacterial cells

d. secretions that always target nervous tissue

e. only released after a cell is damaged or lysed

B cell receptors differ from T cell receptors in that

Select one:

a. B cell receptors are comprised of four polypeptides, whereas T cell receptors have only two polypeptides in their quaternary structure.

b. B cell receptors have two antigen binding sites, whereas T cell receptors have only one antigen binding site.

c. B cell receptors are immunoglobulin in nature, whereas T cell receptors are not immunoglobulin molecules.

d. B cell receptor immunoglobulins can be secreted as antibodies, whereas T cell receptors are never secreted.

e. All of the choices represent differences between B cell and T cell receptors.

Since the 1970s, approximately 40 new infectious disease agents have been discovered, including SARS, chikungunya and zika. The ability of these agents to spread rapidly and cause global concern is due to all of the following except

Select one:

a. communities are becoming more densely populated.

b. communities are becoming more sparsely populated.

c. individuals are traveling more frequently and farther distances than in the previous half-century.

d. communities are spreading into rural areas/wildlife habitats.

BIO120H1 Lecture : Notes taken during lecture

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