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Discuss the salient features of viruses.

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CBSE/Class 11/Science/Biology Tuition/Class XI-XII Tuition (PUC)

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(a) They are smaller than bacteria. (b) They can be filterable. (c) May cause infection and diseases like small pox, flu etc. (d) Able to reproduce in host cells. (e) Use enzymes and metabolic machinery of host cell. (f) DNA/RNA is their genetic material. (g) They are obligate parasites, self replicating,... read more
(a) They are smaller than bacteria. (b) They can be filterable. (c) May cause infection and diseases like small pox, flu etc. (d) Able to reproduce in host cells. (e) Use enzymes and metabolic machinery of host cell. (f) DNA/RNA is their genetic material. (g) They are obligate parasites, self replicating, non- cellular organisms. (h) Plant viruses mostly have single stranded (ss) RNA. (i) All animal viruses mostly have single or double stranded RNA/DNA. (j) They have protein coat called capsid that protects nucleic acid. (k) They cause diseases in plants like mosaic, leaf curling, leaf role, yellowing, vein clearing, dwarfing as well as stunted growth etc. read less
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Biology Tutor

The main difference b/w bacteria and virus is that .....a bacteria can do its activities in the cell or outside the cell.. But virus definetly require a host cell to replicate & cause infection ...without which it cannot perform its functions.. So other than this there is much more deep concept... read more

The main difference b/w bacteria and virus is that .....a bacteria can do its activities in the cell or outside the cell..

But virus definetly require a host cell to replicate & cause infection ...without  which it cannot perform its functions..

 

So other than this there is much more deep concept  about virus if we are interested.

 

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Maths Teacher

1) viruses are able to reproduce in host cells. 2) DNA/RNA is their genetic material. 3) They are smaller than bacteria. 4) They can be filterable. 5) They have protein coat called capsid that protects nucleic acid.
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They are smaller in size measured in nanometers They are obligate intracellular parasite which require host for multiplication They have either RNA or DNA as a genetic material They are enclosed in a particular envelope Ribosomes and enzymes are absent, which are needed for metabolism. They contain... read more

They are smaller in size measured in nanometers

They are obligate intracellular parasite which require host for multiplication 

They have either RNA or DNA as a genetic material

They are enclosed in a particular envelope 

 Ribosomes and enzymes are absent,  which are needed for metabolism. 

They contain a protein coat called the capsid 

 

read less
Comments

Salient features of Viruses: (a) They are smaller than bacteria. (b) They can be filterable. (c) May cause infection and diseases like small pox, flu etc. (d) Able to reproduce in host cells. (e) Use enzymes and metabolic machinery of host cell. (f) DNA/RNA is their genetic material. (g) They... read more
Salient features of Viruses: (a) They are smaller than bacteria. (b) They can be filterable. (c) May cause infection and diseases like small pox, flu etc. (d) Able to reproduce in host cells. (e) Use enzymes and metabolic machinery of host cell. (f) DNA/RNA is their genetic material. (g) They are obligate parasites, self replicating, non- cellular organisms. (h) Plant viruses mostly have single stranded (ss) RNA. (i) All animal viruses mostly have single or double stranded RNA/DNA. (j) They have protein coat called capsid that protects nucleic acid. (k) They cause diseases in plants like mosaic, leaf curling, leaf role, yellowing, vein clearing, dwarfing as well as stunted growth etc. read less
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