Question

morphology form and physical structures

1. the gram stain would show red cells in clinical specimens from a patient infected with a protozoan.

true
false

1. protozoans would likely be ______ bacteria under the brightfield microscope.

larger than
the same size as
smaller than

1. what locomotor structures might you see if you were observing a motile protozoan under an electron microscope? (note: please change all question marks to checkmarks for correct answers or empty boxes for incorrect answers.)

? pseudopods
? cilia
? pili
? fimbriae
? flagella
protozoa can be identified by knowledgeable person based on their

Explanation:

1. Gram - staining is used for bacteria, not protozoans. Protozoans do not have the cell - wall components that Gram - staining targets, so they would not show red (Gram - negative) or purple (Gram - positive) cells.
2. Protozoans are generally larger than bacteria. Bacteria are typically 0.5 - 5 micrometers in size, while protozoans can range from 10 - 500 micrometers.
3. Pseudopods, cilia, and flagella are locomotor structures in protozoans. Pseudopods are 'false feet' used for movement by extending and retracting the cell body. Cilia are hair - like structures that beat in coordinated waves for movement. Flagella are long, whip - like structures that propel the protozoan through its environment. Fimbriae are structures found in bacteria, not protozoans.

Answer:

1. False
2. larger than
3. Pseudopods: ✔

Cilia: ✔
Flagella: ✔
Fimbriae:
Pili: