Difference between Virus and Viroid

Virus are obligate intracellular parasite which can reproduce only by invading and taking over other cells as they lack the cellular machinery for self reproduction.

Viroids are subviral and smallest known agents of infectious disease. The term viroid has recently been introduced by T.O. Diener (1971) to describe the causal agent of the potato spindle tuber disease. There are some 25 viroids which vary in nucleotide sequence.

Viroids are spread by plant propagation (cuttings and tubers) through seeds and by manual mishandling with contaminated implements
Virus vs Viroid
Virus
AIDS virus
1. It is a nucleoprotein particle 
2. Nucleic acid can be DNA or RNA 
3. A protein covering of coat is present 
4. Virus has a larger size. 
5. Virus infects all types of organisms
Viroid
1. It is an RNA particle 
2. Viroid is formed of only RNA 
3. A protein coat is absent
4. Viroid has a smaller size
5. Viroid infects only plants
Sharing is Caring ..... Please take 5 seconds to Share. Thank you...

1 comments:

Anonymous said...

thnx.....this helped a lot. The difference is given in points which is more convinient...thumbs up :)

Post a Comment

We Love to hear from U :) Leave us a Comment.

Your Comments will Definitely Make a Difference in Improving this Site

Thanks for Visiting.....

Related Posts Plugin for WordPress, Blogger...

Follow by Email

 
2014 Major Differences | MajorDifferences.com. Our Partners Biology Exams 4 U, Biology Quizzes, MCQ Biology