Q. 13 - Biology

Question

Which is true of DNA viruses? 

a. They use the host cell’s machinery to produce new copies of their genome.

b. They all have envelopes. 

c. They are the only kind of viruses that can cause cancer. 

d. They are not important plant pathogens. 

Step-by-Step Solution

Answer

DNA viruses use the host cell’s machinery to produce new copies of their genome .

Step 1: Introduction

Acellular creatures are viruses. They're obligate intracellular parasites that don't live outside but do live inside a host. Viruses' genetic material can be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid).

Envelopes aren't found on all DNA viruses. Adenovirus, for example, is a non-enveloped DNA virus.

Cancer can be caused by both DNA and RNA viruses. Hepatitis C virus (HCV) is an RNA-based oncogenic virus, whereas human papillomavirus (HPV) is a DNA-based oncogenic virus.

Viruses are essential diseases for plants.

Step 2: Explanation

Viruses are parasitic obligates.

 

They've taken up residence within a host. 

They lack their own enzymatic machinery and instead rely on the machinery of the host cell to carry out their replication, resulting in the production of copies of their genome.