Mic 205A Exam 1 Questions Answered Correctly Latest Update 2026

MIC 205A EXAM 1 QUESTIONS ANSWERED CORRECTLY LATEST UPDATE 2026 Unlike the term microorganism, the term microbe also includes - Answers viruses Unlike newspapers or blog articles, communications about scientific discoveries in respected scientific journals include - Answers a pre-publication review process; information about the methods used in the experiment Organisms that populate the human body and protect it from disease are called - Answers normal flora In the name E. coli K12, the part after the species is the ________________ designation - Answers strain Characteristics of Archaea that are similar to bacteria include - Answers energy sources used, multiplication method, prokaryotic cell structure; shapes What disease killed one-third of the population of Europe in the 14th century - Answers Bubonic Plague What is a viroid - Answers a single short piece of RNA that can infect plants What are the microscopic filaments of molds - Answers hyphae What is an example of a single celled fungus - Answers yeast What type of diseases are due to organisms "jumping" from a natural animal host to using humans as a host - Answers emerging A bacterium that has a cylindrical shape is called - Answers rod or bacillus A bacterium that has a spherical shape is called - Answers coccus The cell wall is apart of a bacterium's - Answers cell envelope Unlike a stained specimen, living moving organisms can be observed using a ________________ - Answers wet mount Modern day bacterial endosymbionts in eukaryotes have similarities to ______________________ - Answers chloroplasts and mitochondria The two most common examples of endospore forming genera are - Answers Clostridium and Bacillus Immersion oil must be used for viewing a specimen with which lens? - Answers 100x What is a vibrio - Answers a short, curved rod What is a spirillum - Answers a curved rod long enough to form spirals What is a spirochete - Answers a long spiral-shpaed cell with a flexible cell wall and a unique mechanism of motility True or False: eukaryotic flagella and cilia are covered by extensions of the cytoplasmic membrane - Answers TRUE What two macromolecules make up the major components of cell membranes - Answers lipids and proteins What are the functions of proteins embedded in the cytoplasmic membrane - Answers 1) allowing nutrients to enter and waste products to exit the cell 2) catalyzing chemical reactions that are essential to the cell 3) providing the cell with a mechanism to monitor and adjust to its surroundings What determines the strength of the bacterial cell wall - Answers the layer of peptidoglycan Multiphoton microscopes can be used to - Answers 1) obtain interior views of relatively thick structures 2) view live cells The lipid bilayer of the cytoplasmic membrane is composed of ____________ and _____________ - Answers phospholipids and proteins What is a plasmid - Answers a circular DNA molecule that is smaller than the chromosome and encodes non-essential characteristics that can be advantageous to a cell in certain situations Between confocal and multiphoton microscopy, which type is less damaging to cells - Answers Multiphoton microscopy Describe a Petri dish - Answers 1) it excludes airborne contaminants 2) a culture medium in a Petri dish can be referred to as a plate of that medium (agar plate) 3) it is a two-part covered container made of plastic or glass What is a extermophile - Answers microorganisms that live in harsh environments that would kill other microorganisms What are photoautotroph - Answers uses energy from sunlight can carbon from CO2 What are photoheterotroph - Answers uses energy from sunlight and carbon from organic compounds What are chemolithoautotroph - Answers uses energy from inorganic chemicals and carbon from CO2 What are chemoorganoheterotroph - Answers uses energy from organic compounds and carbon from organic compounds What are the five stages of the microbe growth curve - Answers 1) lag phase 2) log or exponential phase 3) stationary phase 4) death phase 5) phase of prolonged decline What are the characteristics of a batch culture - Answers 1) nutrients are not renewed 2) wastes are not removed 3) it is a closed system 4) it typically involves growth of bacteria or archaea either on agar plates or in tubes or flasks of broths where are psychrophile found - Answers found in cold artic where are psychrotoph found - Answers refrigeration where are mesophile found - Answers human body where are thermophile found - Answers compost heap