Chapter 18, Problem 18STP

Summary Introduction

To Compare:

The domain bacteria and the archaea.

Introduction:

Bacteria and the archaea are the domain of the prokaryotic organisms. They are microscopic and lack true membrane bound nucleus and other organelles.

Explanation of Solution

The comparison of the bacteria and archaea is given as follows:

Character	Bacteria	Archaea
Cell size	0.5-4 micrometers	0.5-4 micrometers
Cell wall	Present in some types	Generally present
Cell membrane	Ester linked straight chain fatty acid	Ether linked branched fatty acids.
Ribosomes	70S	70S
Temperature tolerance	Some of them have tolerance to high temperatures	They have high temperature tolerance