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Viruses are about a ________ times smaller than bacteria ? Select the correct answer.

100
1000
10000
100000


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The study of viruses is known as

Eulogy
Festilogy
Virology
Dyslogy


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In which year, The first images of viruses were obtained ?

1931
1938
1943
1951


The first images of viruses were obtained upon the invention of electron microscopy in 1931 by the German engineers Ernst Ruska and Max Knoll

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The HIV (human immunodeficiency virus) that causes AIDS attacks which cell of immune system ?

Q
R
S
T


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In which step of Virus spread cycle, the viruses kills the host cell and search for a new host cell ?

Step 3
Step 4
Step 5
Step 6


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Which of the following viruses has not been associated with human cancer ?

Hepatitis C virus
Herpes simplex virus type 2
Varicella-Zoster virus
Hepatitis B virus


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Which virus was the first to be crystallised ?

Tobacco mosaic
Abaca mosiac
Bwamba
Canid herpesvirus


It is a positive-sense single stranded RNA virus that infects plants, especially tobacco and other members of the family Solanaceae.

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The first X-ray diffraction pictures of the crystallised virus were obtained by

Baruch
Fankuchen
David
Howard


The first X-ray diffraction pictures of the crystallised virus were obtained by Bernal and Fankuchen in 1941. On the basis of her pictures, Rosalind Franklin discovered the full structure of the virus in 1955

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Viruses display a wide diversity of shapes and sizes, called

Apomorphy
Morphologies
Phenetics
Synapomorphy


Morphology is a branch of biology dealing with the study of the form and structure of organisms and their specific structural features

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Which type of viruses are composed of a single type of capsomer stacked around a central axis ?

Helical
Icosahedral
Prolate
Complex


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