Question

fill in the blank question

any microorganism that grows best in the absence of oxygen is a(n)

Explanation:

Identify the key physiological requirement

The question asks for the term describing a microorganism that grows best in the absence of oxygen.

Analyze the microbiological terminology

Organisms that grow in the absence of oxygen are classified as anaerobes. Specifically, those that grow best or exclusively without oxygen are referred to as anaerobes (or obligate anaerobes).

Answer:

Any microorganism that grows best in the absence of oxygen is a(n) <blank>anaerobe</blank>.