WorksheetsViruses
Total questions: 10
Worksheet time: 5mins
Who defined Viruses as 'Obligate parasites, too small to be seen'?
Bawden
Luria
Ivanowski
Beijerinck
Who provided the first experimental proof regarding existence of Viruses?
D J Ivanowski
W M Stanley
Beijerinck
Luria
Who coined the term 'Virus'?
Beijerinck
D J Ivanowski
W M Stanley
Bawden
Which of the following is not true for viruses?
It cant pass through bacterial filters
Highly resistant to antibiotics
acellular infectious agents
obligate, intracellular host specific parasites
Which of the following is the smallest animal virus?
Foot and Mouth disease virus
Small pox virus
Alfalfa Mosaic Virus
Tobacco mosaic Virus
What is the nature of nucleic acid found in Coliphage Φx174?
Single Stranded DNA (ssDNA)
Double Stranded DNA (dsDNA)
Single Stranded RNA (ssRNA)
Double Stranded RNA (dsRNA)
Which statement is not true about Tobacco Mosaic Viruses?
It contains a single stranded DNA and a capsid
Capsid is made of about 2100 Capsomers
Capsomers are arranged helically around hollow central axis
Virus is rod shaped
Which statement about Bacteriophage is not correct?
Lysogenic life cycle is virulent phase
Tail fibre and end plate helps in attachment to the host
It has a capsid which encloses a double stranded DNA
They infect bacteria
Identify the statement which is not true for Viroids?
It causes Mad Cow disease
smallest infectious agent contains free RNA only
They lack capsid
Discovered by T O Diener
These are proteinaceous infectious particle. They cause several diseases like Kuru (Laughing death) in humans and Scrapie in sheep and goats.
These are called
Prions
Virion
Viroids
Mycophage
