MBIO Exam 1 Flashcards
Unlike the term microorganism, the word microbe also includes ______.
viruses
The concept of living things arising from vital forces in non-living or decomposing materials was known as which of the following?
Spontaneous generation
In 1749, John Needham produced results that _______ spontaneous generation when he showed that broths that had been boiled and then sealed with a cork _______.
support; could still give rise to microorganisms
Why were Louis Pasteur’s experiments with swan-necked flasks so important in helping disprove the theory of spontaneous generation?
They ended arguments that a “vital force” was necessary for spontaneous generation, while preventing contamination from microbes in the air.
The work of John Tyndall and Ferdinand Cohn ______.
explained why some spontaneous generation investigators got different results from those of Pasteur
Technically speaking, viruses are not microorganisms because they are not ______.
composed of cells
Which defines spontaneous generation?
Life arose from non-living matter.
The Germ Theory of Disease states that ______.
microorganisms cause certain diseases
_______ showed that flasks containing various broths gave rise to microorganisms even when the flasks were boiled and sealed with a cork.
John Needham
_______ is credited with disproving spontaneous generation using broth in swan-neck flasks.
Louis Pasteur
We could not survive without microorganisms, but they can also be harmful.
True
Tyndall and Cohn’s experiments in the 1870s showed the presence of a heat-resistant form of bacteria called a(n)
Blank 1: endospore or endospores
Organisms that populate the human body and which protect it from disease are termed normal
Blank 1: microbiota, flora, biota, microflora, or resident microbiota
The principle that microorganisms cause certain diseases is called the
Theory of Disease.
Blank 1: Germ