Final answer:
Kinesin is a motor protein that moves toward the plus-end of microtubules, and dynein moves toward the minus-end. These proteins are essential for the intracellular transport of organelles and other cargoes.
Step-by-step explanation:
Kinesin is a microtubule plus-end directed motor while dynein is a microtubule minus-end directed motor. Motor proteins such as kinesin and dynein are crucial for the transport of cellular cargo, such as organelles and vesicles, along the microtubule tracks within a cell. Kinesin typically moves cargo toward the periphery of the cell by walking along microtubules towards the plus end, while dynein moves cargo toward the center of the cell by walking towards the minus end. These actions are central to processes like vesicle transport, cilia and flagella movement, and the separation of chromatids during cell division.