The following questions refer to cell junctions Which of the

The following questions refer to cell junctions:

Which of the following facilitates transport of ions between djacent animal cells?

a.) desmosomes B.)hemidesmosomes C.)tight junctions D.)gap junctions E.)plasmodesmata F.)cell wall G.)glycocalyx H.)extracellular matrix

Which refers to 50-100nm wide prtoplasmic connecteions between adjacent plant cells?

a.) desmosomes B.)hemidesmosomes C.)tight junctions D.)gap junctions E.)plasmodesmata F.)cell wall G.)glycocalyx H.)extracellular matrix

Which refers to molecules secreted by animal cells in which the cells are imbedded?

a.) desmosomes B.)hemidesmosomes C.)tight junctions D.)gap junctions E.)plasmodesmata F.)cell wall G.)glycocalyx H.)extracellular matrix

Which anchors animal cells together without affecting the passage of molecules between them?

a.) desmosomes B.)hemidesmosomes C.)tight junctions D.)gap junctions E.)plasmodesmata F.)cell wall G.)glycocalyx H.)extracellular matrix

Which prevents the passage of molecules between adjacent epithelial cells?

a.) desmosomes B.)hemidesmosomes C.)tight junctions D.)gap junctions E.)plasmodesmata F.)cell wall G.)glycocalyx H.)extracellular matrix

Which of the following is true about adhering junctions?

A.)a type of anchoring junction of epithelial cells B.)adhering junctions from continous cadherin belts around cells C.)adjacent cells are linked by cadherin molecules at focal contacts D.)adhering junctions are associated with intracellular bands of actin bound to adhesion plaques E.)each of the above is true F.)none of the above are true

Which of the following epithelial cell junctions would be found closes to the free surface (\"top\") of the cells?

A.) desmosomes B.)hemidesmosomes C.)tight junctions D.)adhering junctions

Which do transmembran proteins called integring as opposed to cadhering attach the cells to the basal lamina?

A.) desmosomes B.)hemidesmosomes C.)tight junctions D.)adhering junctions

Which two are attached internally (intracellularly) to intermediate filaments?

A.) desmosomes B.)hemidesmosomes C.)tight junctions D.)adhering junctions

Solution

Which of the following facilitates transport of ions between djacent animal cells?      D gap junction because only this forms channel or tunnel like structure Which refers to 50-100nm wide prtoplasmic connecteions between adjacent plant cells?         Plasmodesmata Which refers to molecules secreted by animal cells in which the cells are imbedded?     H extra cellular matrix Which anchors animal cells together without affecting the passage of molecules between them?      Gap junction Which prevents the passage of molecules between adjacent epithelial cells?           Tight junction Which of the following is true about adhering junctions? All are true