Which cell-cell connection allows for the formation of a gradient of 2nd messengers, small molecules or...

Which cell-cell connection allows for the formation of a gradient of 2nd messengers, small molecules or ions in the cytosol of neighboring animal cells?

a Plasmodesmata

b Adherens junction

c Gap junction

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Expert Solution

Ans.

Cellular structures which are responsible for providing association between neighbouring cells or between materials of extracellular space and a cell, are known as cell junctions (or, intercellular bridges).
These structures comprise of complexes of multiple proteins.
These structures support many functions in plant and animal cells such as, communication between neighbouring cells, reducing stressed placed upon cells and transfer of small molecules across cells.
Structures (or, channels) between neighbouring cells in animals responsible for the transfer of ions, water and other substances are called as gap junctions.
Gap junctions form the cell-cell connection allowing for the formation of a gradient of 2nd messengers, small molecules or ions in the cytosol of neighboring animal cells.
These gap junctions are structurally similar to plasmodesmata in plant cells.
Transformation of connexins, a six membrane proteins, into connexon which is a donut like structure, results in the development of gap junctions.
A channel is formed between the cells upon alignment of the pores of connexons.

gladiator answered 1 year ago

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