4.6 Connections between Cells and Cellular Activities

Question 1

extracellular matrix

Answer 1

material secreted from animal or
fungal cells that provides mechanical protection and
anchoring for the cells in the tissue

Question 2

plasmodesma (plant cells)

Answer 2

(plural = plasmodesmata) channel that
passes between adjacent plant cells’ cell walls, connects
their cytoplasm, and allows transporting of materials
from cell to cell

Question 3

tight junction

Answer 3

watertight seal between two adjacent animal cells

Question 4

desmosomes

Answer 4

act like spot welds between adjacent epithelial cells

-linkages between adjacent epithelial cells that
form when cadherins in the plasma membrane attach to
intermediate filaments

Question 5

Gap junctions

Answer 5

channel between two adjacent animal cells
that allows ions, nutrients, and low molecular weight
substances to pass between cells, enabling the cells to
communicate