Exam (elaborations)
Microbiology Exam 1 (Pearson) Questions and Answers 2024
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Microbiology Exam 1 (Pearson)
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Microbiology Exam 1 (Pearson)Biofilms provide pathogens with an adhesion mechanism and aid in resistance to
antimicrobial agents
T/F - answer True
Microbes are associated with life-sustaining benefits as well as life-threatening diseases
T/F - answer True
The primary role of microbes on the planet involves causing disease in animals and
humans
T/F - answer False
Common commercial benefits of microorganisms include synthesis of - answer
Riboflavin, acetone, and insulin
The term used to describe a disease-causing microorganism is - answer Pathogen
Each of the following organisms would be considered a microbe except: bacterium,
protozoan, yeast, virus, or mushroom - answer Mushroom
Microorganisms are involved in each of the following processes except: smog
production, O2 production, food production, decomposition of organic material, infection
- answer Smog production
All cells possess a cell wall
T/F - answer False
A student has obtained a sample of pond water for study. Using the high-power lens, he
observes several cells with nuclei. He can conclude that the cells are not bacteria
T/F - answer True
Single-celled and multi-cellular organisms, with a defined nucleus and a variety of
nutritional sources – answer Eukarya
Archaea differ from bacteria in that archaea
-lack nuclei
-have diverse cell wall compositions
-reproduce by binary fission
-are prokaryotic
-use organic compounds for food - answerHave diverse cell wall compositions
, Classification of organisms into three domains is based on - answerCellular
organization
The infectious agent that causes AIDS is a _______ - answerVirus
Protozoan motility structures include ______________ - answercilia, flagella, and
pseudopods
Viruses are not considered living organisms because they
-are structurally very simple
-cannot reproduce by themselves
-are typically associated with disease
-can only be visualized using an electron microscope
-are ubiquitous in nature - answerCannot reproduce by themselves
A prokaryotic cell may possess each of the following cellular components except
-ribosomes
-flagella
-a nucleus
-a cell membrane
-a cell wall - answerA nuclues
Which of the following is not associated with viruses
-chemical reactions
-protein coat
-envelope
-nucleic acid
-organelles - answerOrganelles
The formal system for classifying and naming organisms was developed by? -
answerCarolus Linnaeus
In the name Staphylococcus aureus, aureus is the? - answerSpecies
The process of pasteurization to reduce food spoilage utilizes high heat to kill all
bacteria present
T/F - answerFalse
Anton van Leeuwenhoek was the first microbiologist to use a microscope to examine
environmental samples for the presence of microorganisms
T/F - answerTrue
Spontaneous generation refers to living cells arising only from other living cells
T/F - answerFalse
Penicillin was discovered by accident by? - answerAlexander Fleming
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