Question

multiple choice 1 point a scientist is studying the coordinated contraction of heart muscle cells in an animal and the rapid transport of water and nutrients between plant cells in a leaf. which of the following correctly identifies the cell junctions responsible for these functions? tight junctions in heart muscle cells and plasmodesmata in leaf cells provide strong adhesion to prevent cells from being pulled apart. plasmodesmata in both heart muscle cells and leaf cells create a watertight seal to prevent fluid leakage. gap junctions in heart muscle cells and plasmodesmata in leaf cells allow for the direct exchange of small molecules and ions. tight junctions in both heart muscle cells and leaf cells allow for the rapid passage of ions and solutes.

Explanation:

Tight junctions in heart - muscle cells prevent fluid leakage by creating a watertight seal. Plasmodesmata in plant (leaf) cells allow for the direct exchange of small molecules and ions. Gap junctions in heart - muscle cells allow for the rapid passage of ions and solutes for coordinated contraction.

Answer:

Gap junctions in heart muscle cells and plasmodesmata in leaf cells allow for the direct exchange of small molecules and ions.