What is the feature of the cell membrane that causes it to be able to "choose" what materials enter and exit?

Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

Autonomous underwater explorers will be used to gather large-scale ocean information select the best answer from the choices provided ot