Match each description below with the type of cell junction it characterizes:
a. adherens junction
b. desmosome
c. hemidesmosome
d. tight junction
e. gap junction
____________ Transmembrane proteins on the plasma membrane arranged in a ring that
bind to a similar protein ring on an adjacent cell to allow transfer of materials between the
cells.
____________ A mesh-like attachment between cells formed by binding of transmembrane
proteins of one cell to the same protein type on the adjacent cell, preventing substances from
passing between cells.
____________ A band-like attachment where cadherins attach to microfilaments inside the
cell and to the extracellular domain of an adjacent cell's cadherin proteins on the outside of
the cells.
____________ A button-like point of attachment where integrins attach to intermediate
filaments inside the cell and to a protein of the extracellular matrix on the outside of the cells.
____________ A button-like point of attachment where cadherins attach to intermediate
filaments inside the cell and to the extracellular domain of an adjacent cell's cadherin proteins
on the outside of the cells.
What will be an ideal response?
e Transmembrane proteins on the plasma membrane arranged in a ring that bind to a similar
protein ring on an adjacent cell to allow transfer of materials between the cells.
d A mesh-like attachment between cells formed by binding of transmembrane proteins of one
cell to the same protein type on the adjacent cell, preventing substances from passing
between cells.
a A band-like attachment where cadherins attach to microfilaments inside the cell and to the
extracellular domain of an adjacent cell's cadherin proteins on the outside of the cells.
c A button-like point of attachment where integrins attach to intermediate filaments inside the
cell and to a protein of the extracellular matrix on the outside of the cells.
b A button-like point of attachment where cadherins attach to intermediate filaments inside
the cell and to the extracellular domain of an adjacent cell's cadherin proteins on the outside
of the cells.
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Answer the following statement true (T) or false (F)
The lifeline between the embryo and the placenta ________
A) is derived from the yolk sac B) is derived from the amnion C) is called the "chorion" D) is called the "umbilical cord"