Exam One 2.0

Question 1

Bacteriophages free up organic matter so that….

Answer 1

new life can be generated.

Question 2

What are the phases of lytic bacteriophages?

Answer 2

1. attachment
2. penetration
3. biosynthesis
4. maturation
5. release

Question 3

We are _____% Virus

Answer 3

8

Question 4

Synytin is a captive retroviral envelope protein involved in…

Answer 4

human placental morphogenesis

Question 5

Viruses are NOT/do not…

Answer 5

1. cells
2. possess functional organelles
3. produce their own energy or macromolecules
4. contain both RNA and DNA (they contain one or the other)
5. suseptible to antibiotics

Question 6

What are pandoraviruses?

Answer 6

HUGE viruses

Question 7

No known virus has the potential to generate…

Answer 7

ATP (energy synthesis)

Question 8

Viruses are infectious, ___________

Answer 8

obligate intracellular parasites

Question 9

The viral genome is comprised of either, ________ or _______.

Answer 9

DNA or RNA

Question 10

What kind of proteins do viruses possess?

Answer 10

Receptor-binding proteins

Question 11

The Viral genome directs synthesis by,

Answer 11

cellular systems of many copies of all the viral components

Question 12

Virions are formed from…

Answer 12

newly synthesized components within the host cell

Question 13

A progeny virion is a vehicle for…

Answer 13

transmission of the viral genome to the next host cell or organism

Question 14

Describe variolation

Answer 14

inhaling dried crusts or inoculating the pus from a small pox lesion into a scratch as a form of vaccination

Question 15

Edward Jenner was almost killed by…

Answer 15

variolation (small box)

Question 16

Edward Jenner used _______ to vaccinate a young boy

Answer 16

cowbox

Question 17

What did Leeuwekhoek discover?

Answer 17

microorganisms by observing “wee animalcules in drops of rain or sea water”

Question 18

What did Pasteur’s experiments show?

Answer 18

• boiled medium remained free of microorganisms as long as airborne molecules were prevented from entering.
• disproved spontaneous generation

Question 19

What do Koch’s postulates show?

Answer 19

the association between particular microorganisms and disease

Question 20

Kochs postulates led to the demonstration that…

Answer 20

anthrax was caused by Bacillus anthracis in cattle AND that Myobacterium tuberculosis causes tuberculosis in humans

Question 21

What was the first report of a pathogenic agent smaller than any known bacterium?

Answer 21

The tobacco mosaic disease in 1892, which was observed by Ivanovsky

Question 22

Ivanovsky observed that TMD was not…

Answer 22

retained by a filter

Question 23

Loeffler and Frosch were students of Koch who observed and found what?

Answer 23

they observed that the causative agent of foot and mouth disease was filterable and found that it could replicate only in the host organism

Question 24

How did Loeffler and Frosch determine that the virus they were looking at could only replicate in the host organism?

Answer 24

it did not replicate in solutions that support bacteria growth

Question 25

Virus is latin for

Answer 25

poison

Question 26

Twort and d’Herelle were the first to…

Answer 26

recognize viruses that eat bacteria

Question 27

Luria and Delbruck were two of many scientists who in the 1930’s…

Answer 27

used bacteriophages as model systems to investigate many aspects of virology.