The document defines and provides examples for several words beginning with "prot/proto": protagonist, protocol, protoplasm, prototype, and protozoa. The protagonist is the main character of a literary work, such as Kamala Khan in Ms. Marvel. Protocol refers to rules of behavior, like classroom rules. Protoplasm is the living substance that makes up cells. A prototype is an original model, like the Volkswagen model. Protozoa are one-celled animals.

1. Prot/Proto

2. Protagonist
• the main character in a
literary work
• Kamala Khan is the
protagonist of the new
Ms. Marvel comic.

3. Protocol
• a code of diplomatic or
military rules of
behavior
• The teacher broke
classroom protocol by
allowing students to
jump around, eat food,
listen to music and
avoid class work.

4. Protoplasm
• the substance that
makes up the living
parts of cells
• We learned about
protoplasm when we
studied cells.

5. Prototype
• an original model on
which something is
patented
• The Volkswagen
prototype was on
display last month.

6. Protozoa
• one-celled animals
• My nerdy science
brother thinks Protozoa
are so cute.