Question

You have discovered a new coccoid-shaped microorganism with no nucleus, a rigid cell wall, and a diameter of 2 μm. Chemical tests reveal that its cell wall does NOT contain peptidoglycan. The new microorganism is:

Answer 1

Answer: Archean

Step-by-step explanation:

The archea are the simple single-celled prokaryotic cells. They appear in various shapes. They posses no nucleus. There are various types of cell walls in archea. The cell wall lacks peptidoglycan which is a distinguishing feature between archea and bacteria. Their small size and rigid cell wall favors adaptation in extreme saline and heat conditions which further favors their survival and colonization.

Based on the given conditions, the microorganism mentioned in the given situation is an archean.

Answer 2

Answer: Archaeon.

Step-by-step explanation:

Archaea are unicellular organisms that make up the third domain of organisms on earth. They were initially classified as bacteria, receiving the name archaebacteria, but this classification is outmoded. As a main characteristic, they have no cell nucleus. They have a rigid cell wall that protects them from the environment and it is composed of S-layers and lack peptidoglycan molecules. In appearance they may be described as having a coccoid morphology and their individual range is from 0.1 μm to over 15 μm in diameter.