Neurobiology 1

Question 1

What is a Paramecia?

Answer 1

A single celled eukaryote, that does not require neurons for complex movements.

Question 2

What do Paramecia use to move?

Answer 2

Cilia and ion channels.

Question 3

What indicates that ion channels and electrical gradients developed very early on in evolution?

Answer 3

Prokaryotes have precursor ion channels of a more complex nervous system.

Question 4

Why do large multicellular organisms require direct connections between sensory and motor cells?

Answer 4

Because diffusion of chemical transmitters would be too slow and it is difficult to produce specific responses from this.