Chapter 17, Problem 15TYK

Summary Introduction

To review:

Whether viruses evolved from complex organisms or are the remnants of precellular life.

Introduction:

Viruses are biological entities that cannot replicate on their own in the absence of a host. They contain a nucleic acid core covered in a protein coat called capsid. The viral particles invade host cells such as bacteria, plants, or animals and replicate within them to form progeny viruses.