This specialized cell in the cyanobacterium Anabaena fixes nitrogen gas.

These tiny intracellular Gram-negative bacteria  are transmitted via arthropods like fleas and ticks. They are the causative agent for Rocky Mountain Spotted Fever and Typhus.

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?

What are some problems associated with NTDs?

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

These filaments are used by fungi to anchor to surfaces and to digest and absorb nutrients.

There are some diseases that were controlled but now are coming back due to drug resistance.  These diseases are referred to as ___________________________.

This infectious amoeba, found in fresh water, can swim into the brain.

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

The flagellar arrangement seen below is when the bacterial cell has no flagella.