Final answer:
Kinesin and dynein motor proteins use ATP hydrolysis to power their movements in a single direction along microtubules. Hence the correct answer is option A
Step-by-step explanation:
Kinesin and dynein motor proteins use the energy of ATP hydrolysis to power their movements in a single direction along microtubules. Kinesin moves cargo towards the plus end of the microtubules, while dynein moves cargo towards the minus end. These motor proteins play important roles in intracellular motility, such as the transport of vesicles and organelles within cells.
Hence the correct answer is option A