Biological Classification Flashcards
Five kingdom classification of Whittaker there is no mention of.
Lichen , virus , viroid , prions
Contagium vivum fluidum
M.w. beijerinek
Viruses could be crystallised and crystal consist largely of protein
W.M.Stanley
Viruses are _________ parasite.
Obligate(compulsory need a host to complete life cycle)
No virus contain both dna and rna
True.
Viruses that infect plant have ?
SS RNA
Viruses that infect animals have ?
SS RNA or DS RNA or DS DNA
Viruses that infect animals have ?
SS RNA or DS RNA or DS DNA
Bacteriophage are usually
_______viruses
DS dna
The protein coat called _________ made up of small subunit called ________,protects the __________.
Capsid
Capsomeres
Nucleic acid
In plants infection due to virus have symptoms -
Mosaic formation
Leaf rolling and curling
Yellowing
Vein clearing
Dwarfing and stunted growth
T.O diener discovered a new infectious agent that was smaller than viruses and caused____________it was found to be a free_______.
Potato spindle tuber disease
Rna
_______ lacked the protein coat that is found in viruses
Viroids
________ are similar in size to viruses
Prions
The most notable disease caused by prions are_____________commonly called__________in cattle and its analogous variant___________in humans
Bovine spongiform encephalopathy(BSE)
Mad cow disease
Cr Jacob disease (CJD)
