Prescotts Principles of Microbiology 2nd Edition Willey Test Bank TRUE/FALSE - Write 'T' if the statement is true and 'F' if the statement is false.1) Extant microorganisms are organisms from the fossil record that are no longer present on Earth today.⊚ true ⊚ false
2) Microbiologists study a variety of organisms, but all are considered either Bacteria or Archaea.⊚ true ⊚ false
3) All eukaryotes have a membrane-delimited nucleus.⊚ true ⊚ false
4) Viruses are not generally studied by microbiologists because they are not classified as living organisms.⊚ true ⊚ false
5) Viruses constitute the fourth domain of life in current biological classification schemes.⊚ true ⊚ false
6) The earliest microbial fossils thathave been found are dated from approximately 4.5 million years ago.⊚ true ⊚ false 1 / 4
7) Fanny Hesse first suggested that agar be used to solidify microbiological media.⊚ true ⊚ false
8) M. J. Berkeley demonstrated that the great potato blight of Ireland was caused by a water mold (then thought to be a fungus).⊚ true ⊚ false
9) Invisible living creatures were thought to exist and cause disease long before they were ever observed.⊚ true ⊚ false
10) Koch's postulates were instrumental in establishing that the intracellular parasite Mycobacterium leprae is the ⊚ true ⊚ false
11) Edward Jenner's work in preventing rabies led to the use of the term vaccination to describe a type of procedure ⊚ true ⊚ false
12) Although developed over 100 years ago, Koch's postulates continue to be used successfully in all known human infectious diseases.
⊚ true ⊚ false causative organism of leprosy.
used in the prevention of disease. 2 / 4
13) Viruses and bacteria were first cultured in the laboratoryat about the same time.⊚ true ⊚ false
14) Charles Chamberland developed porcelain filters that allowed other scientists to demonstrate that viruses are smaller than bacteria.⊚ true ⊚ false
15) The first disease to be identified as being caused by a virus was tobacco mosaic disease.⊚ true ⊚ false
16) John Tyndall demonstrated that microorganisms present in the air are carried on dust particles.⊚ true ⊚ false
17) Agostino Bassi demonstrated that a type of silkworm disease was caused by a fungus and proposed that many ⊚ true ⊚ false diseases are caused by microorganisms.
18) The usefulness of 3 / 4
agar in solidifying microbiological growth media is limited because it does not remain solid at temperatures above 28°C.⊚ true ⊚ false
19) Robert Koch developed a vaccine that could be used to prevent anthrax.⊚ true ⊚ false
20) The endosymbiotic hypothesis is generally accepted as the origin of eukaryotic organelles.⊚ true ⊚ false
21) The relationship between specific bacteria and specific diseases was first demonstrated by Koch.⊚ true ⊚ false
22) Some microorganisms are useful in bioremediation processes that reduce the effects of pollution.⊚ true ⊚ false
MULTIPLE CHOICE - Choose the one alternative that best completes the statement or answers the question.23) Protists contain all of the following forms of life
EXCEPT .
- protozoa
- fungi
- / 4