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Flashcards in Biological Classification Deck (37):
1

The study of viruses

Virology

2

Viruses are connecting link between

Living and non living things

3

Viruses can only reproduce by

Only within a living cell

4

Viruses can be killed by

Autoclaving and ultraviolet rays

5

Meaning of virus

Venom or poisonous fluid

6

D.J. Ivanowsky found virus by seeing microbes in the disease__________?

Disease- mosaic disease of tobacco.

7

M. W. Beijernick1898 called the extraction of the infected plant of tobacco as_____________

Contagium vivum fluidum
( infectious living fluid ).

8

Who crystallised TMV ( tobacco mosaic virus) for the first time.......

W. M. Stanley 1935

9

The outter most envelop of virus is made of

Proteins -from virus
Lipids}. Carbohydrates}
Both from the host

10

Envelope is present in which all viruses

HIV,Herpes virus.....

11

An inert virus is called

Viron

12

The protein coat is made of subunits called as

Capsomeres

13

Viruses have which type of nuclei acid

It contains both RNA and DNA

14

DNA containing viruses are called

Deoxyviruses

15

Double stranded DNA is found in

Pox virus ,cauliflower mosaic virus,herpes virus..

16

Single stranded DNAare present in

Colliphage X 174, M13 phage...

17

Double stranded RNA IS PRESENT IN

Reovirus, wound tumour virus..

18

Single stranded RNA IS PRESENT IN

TMV, Influenza virus, foot and mouth disease virus,retrovirus(HIV)...

19

The genetic material found in phytophagineae/plant viruses

ssRNA

20

Genetic material in zoophagineae /animal virus

ss or dsRNA OR dsDNA

21

How many capsomeres are arranged helically to form a capsid

2130

22

Which is the monomer of RNA

Nucleotides

23

ssRNA consists of _________ nucleotides.

6400

24

The ratio of nucleotides : capsomeres =

3:1

25

The two types of reproduction in viruses are

Lytic cycle
Lysogenic cycle

26

Virulent virus reproduce by

Lytic cycle

27

Temperate viruses reproduce by

Lysogenic cycle

28

Casual agent causing AIDS

Retrovirus

29

Causal agent causing mumps

Paramyxovirus

30

The term virus was coined by

Pasteur 1880

31

Viroids was discovered by

Dieter 1971

32

Viroids are with which type of genetic material

Infectious RNA. Particle

33

The diseases caused by viroids in plants are

Potato spindle tuber disease,chrysanthemum stunt and citrus exocortis..

34

Virusoids were discovered by

Randle

35

Virusoids are present in

Inside the capsid of the other large virus

36

Prions are discovered by

Alper et.al

37

Proms causes diseases like

Kuru disease
Bovine spongiform encephalopathy
Scrapie disease in sheep
Creutz feldt Jakob disease