Question

Movement of material between cells is known as the ________ pathway.

a) Exocytic
b) Paracrine
c) Endocytic
d) Gap junction

Answer 1

Movement of material between cells is known as the d) Gap junction pathway.

Step-by-step explanation:

Gap junctions are specialized protein channels that connect the cytoplasm of adjacent cells. These channels allow for direct communication and movement of materials between cells. Gap junctions are found in various tissues and play a crucial role in coordinating cellular activities.

Through gap junctions, small molecules such as ions, nutrients, and signaling molecules can pass between cells. This direct cell-to-cell communication is important for maintaining tissue homeostasis, coordinating cellular responses, and transmitting electrical signals.

Gap junctions are particularly important in excitable tissues like the heart and the nervous system, where rapid and synchronized cell communication is vital for proper functioning. In the heart, for example, gap junctions allow electrical impulses to travel quickly between cardiac muscle cells, ensuring coordinated contraction and proper heart function.

In summary, the movement of material between cells is known as the gap junction pathway, facilitated by specialized protein channels called gap junctions.

The correct answer is d) Gap junction.

Answer 2

Exocytic pathway, which involves the process of exocytosis where material is expelled from the cell into the extracellular space.

The correct answer is a. Exocytic.

Step-by-step explanation:

The movement of material between cells is known as the exocytic pathway. Exocytosis is the process through which cells expel material from the cell into the extracellular fluid. During exocytosis, waste material is enveloped in a vesicle that fuses with the interior of the plasma membrane. This action allows the waste material to be expelled into the extracellular space.

Exocytosis is crucial for various functions, including the secretion of proteins of the extracellular matrix and the release of neurotransmitters into the synaptic cleft by synaptic vesicles.

Therefore, the correct option this question is (a) Exocytic.