Extant microorganisms are organisms from the fossil record that are no longer present on Earth today.

Microbiologists study a variety of organisms, but all are considered either Bacteria or Archaea.

An agent that specifically kills fungi but not other kinds of microorganisms is also known as a _________.

Viruses are not generally studied by microbiologists because they are not classified as living organisms.

Fanny Hesse first suggested that agar be used to solidify microbiological media.  

A microbiologist is testing the drinking water for a municipality. What would be the best method for testing the purified water?

Agar is an excellent solidifying agent for microbiological media because _________.

Glycoprotein spikes protruding from the outer surface of viral envelopes function as _________.

Identify the bone labelled “D” in the image below:

Photoreceptors (rods and cones) are found in which part of the labelled image below?