Variety of Life

Question 1

Who devised the system for scientific naming?

Answer 1

Carlos Linnaus, a Swedish botanist

Question 2

When did Linnaues publish his list of name of plants?

Answer 2

1753

Question 3

When did Linnaues publish his list of name of animals?

Answer 3

1758

Question 4

When and who proposed a third kingdom to accomodate euglena like organisms and bacteria

Answer 4

1866, Ernest Hackel

Question 5

Who and when suggested differentiating prokaryotes and eukaryotes from each other?

Answer 5

1937, E-Chatton

Question 6

Who and when first vaccinated against a disease?

Answer 6

1796, Edward Jenner

Question 7

Who and when first described viruses as filterable agents of diseases?

Answer 7

Charles Chamberland in 1884

Question 8

Who and when discovered the filterable agents of tobacco mosaic virus?

Answer 8

1892, Ivanowski

Question 9

When were filter passing ultramicroscopic agents of yellow fever and foot and mouth disease seen?

Answer 9

Foot and mouth disease ~ 1898
Yellow fever ~ 1901

Question 10

Who and when first crystallized tobacco mosaic virus?

Answer 10

Stanley in 1935

Question 11

Viruses are ________ times smaller than bacteria

Answer 11

10 to 1000

Question 12

When were prions discovered?

Answer 12

1938

Question 13

The volume of phage is _____ of the host

Answer 13

1/1000

Question 14

About 25 minutes after initial infection, how many bacteria are formed?

Answer 14

About 200

Question 15

How many adults are immune ti mumps and measles?

Answer 15

About 60%

Question 16

What is the diameter of retroviruses?

Answer 16

100nm

Question 17

When was AIDS first reported?

Answer 17

1980s

Question 18

When was the agent for AIDS discovered?

Answer 18

1984

Question 19

When was HIV named

Answer 19

1986

Question 20

All eukaryotes that did not fit the definition of plants, animals or fungi were included in the kingdom

Answer 20

Protists

Question 21

Can viruses replicate in blood plasma

Answer 21

No

Question 22

_______ number of capsomeres are present in the capsid of herpes virus

Answer 22

162

Question 23

Attachment of HIV DNA with the host DNA is done via action of

Answer 23

Integrase

Question 24

Can HIV be transmitted by saliva

Answer 24

No

Question 25

Uncoating of HIV virus occurs

Answer 25

In the cytoplasm

Question 26

The family name of corn is

Answer 26

Poaceae

Question 27

Initially the classification system was based on

Answer 27

Morphology

Question 28

Pneumonia is caused by

Answer 28

Bacteria

Question 29

Bacteriophages were discovered by

Answer 29

Twort in 1915 and D'Herelle in 1917

Question 30

Size of parvoviruses is

Answer 30

20 nm

Question 31

The shape of T.M.V virus is

Answer 31

Rod-like

Question 32

In the lytic cycle of bacteriophage, the host DNA is

Answer 32

Digested into nucleotides

Question 33

Smallest known virus is

Answer 33

Polio virus

Question 34

The infectious molecules consisting of only RNA are called

Answer 34

Viroids

Question 35

Rabies virus was first filtered by

Answer 35

Charles Chamberland

Question 36

Viruses are not resistant to

Answer 36

Interferon

Question 37

The smallest known viruses are called

Answer 37

Poxviruses

Question 38

The largest known viruses are called

Answer 38

Parvoviruses

Question 39

Viruses mainly attack and hijack which component of cells

Answer 39

Ribosomes

Question 40

Mature HIV doesn't have

Answer 40

DNA

Question 41

The process that cannot take place in the absence of virus is

Answer 41

Transduction

Question 42

Vascular lesion in the epithelial layer of ectodermal tissue takes place in

Answer 42

Herpes simplex

Question 43

Hepatitis C is also known as

Answer 43

Infusion hepatitis

Question 44

Feulgen dye is used for staining of bacterial

Answer 44

Nucleoid

Question 45

In gram staining procedure, crystal voilet forms complex with

Answer 45

Iodine

Question 46

A plasmid molecule may never be

Answer 46

Single stranded

Question 47

The cell wlal of bacteria provides protection against osmotic lysis in

Answer 47

Hypotonic conditions

Question 48

The structure that is specific only to gram negative bacteria is

Answer 48

Pilli

Question 49

Which two structures play direct role in allowing bacteria to adhere to each other and other surfaces

Answer 49

Capsules and fimbriae

Question 50

Size of ribosomes of E.coli are

Answer 50

70S

Question 51

What is the size of prokaryotic ribosome subunits

Answer 51

50S and 30S

Question 52

During pasteurization process, milk is heated at 71.7°C for

Answer 52

15 seconds only

Question 53

In the life cycle of HIV, the substance responsible for formation of provirus is

Answer 53

Integrase