You are staining a Gram-positive bacterium and forgot the mordant step (but continued with the rest of the procedure). What result do you expect at the end of the Gram stain?

This structure is used to classify bacteria into groups.

Which of the following is an important role algae play in the environment?

This NTD is characterized by the swelling of the eyelid known as Romana’s sign. The swelling is due to exposure to bug feces containing the microbe.

You treat eukaryotic cells with a drug that can affect smooth ER function. Which of the following could be observed in these treated cells?

These algae have filaments that contain the pigment chlorophyll and make up pond scum.

Most bacteria have defined morphologies. One type of morphology is pictured here.  

The cell walls of protozoa consist of _________________.

This doctor developed the first vaccine that protected against smallpox.

These gliding bacteria produce fruiting bodies when starving.