Microbiology Straighterline Part 3 Exam Questions with

Microbiology Straighterline Part 3 Exam Questions with Complete Solutions Which of the following historical microbiologists is incorrectly paired with his contribution to the science?

Select one:

• Francesco Redi: tested spontaneous generation with meat exposed to the air or covered with cloth
• Antonie van Leeuwenhoek: made and used quality magnifying lenses to observe and record

microorganisms

c. Louis Pasteur: demonstrated that anthrax was caused by a bacterium

• Joseph Lister: promoted disinfecting hands and air prior to surgery - Correct Answers C

Analysis of the small subunit rRNAs from all organisms in the three current domains suggests that

Select one:

• the eukaryotes arose from prokaryotes.
• the Archaea are more closely related to bacteria than eukaryotes.
• all modern and extinct organisms on earth arose from a common ancestor.
• the prokarytoes, archaea, and eukaryotes are not related. - Correct Answers C

Polar molecules are composed of covalently bonded - Correct Answers atoms of different electronegativity Microorganisms are best defined as organisms that - Correct Answers are too small to be seen with the unaided eye Characteristics shared by all cells include

Select one:

• a membrane serving as a cell boundary.
• the possession of genetic information.
• the presence of cellular fluid.
• All of the choices are correct - Correct Answers E 1 / 2

What is the term for a culture made from one isolated colony? - Correct Answers axenic and pure All of the following are lipids except ______.

Select one:

• cholesterol
• starch
• phospholipid
• wax
• triglyceride - Correct Answers B

A scientist studying the sequence of nucleotides in the rRNA of a bacterial species is working on - Correct Answers determining evolutionary relatedness Which of the following is NOT a recent discovery that has had a huge impact on the understanding of microbiology?

• Restriction enzymes
• PCR technique
• Biofilms
• Small RNAs
• All are significant discoveries. - Correct Answers E

Microbes in a biofilm use quorum sensing to

Select one:

• assess the size of a particular microbial population.
• inactivate antibiotic molecules.
• attach to surfaces.
• transfer genetic material among individual cells. - Correct Answers A

In a close relationship, a change in one partner that results from a change in the other partner is termed ______. - Correct Answers coevolution

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