Visible differences between colonies on a plate (like color changes) are shown on:

A molecule containing a combination of two or more different elements is called a compound.

A bacterium forms clusters of spherical cells. What is its arrangement?

These are variant forms of the same element that differ in the number of neutrons:

The atomic symbol “Fe” represents which element?

Media whose exact chemical composition is known is called:

The Gram stain is a differential stain that categorizes bacteria based on their cell wall structure.

A bacterium survives drying, immune attack, and antibiotics due to a thick outer coating. Which structure is most responsible?

All eukaryotes possess a cell wall.

Prions are simpler than viruses because they consist only of infectious proteins.