Which of the following laboratory "tools" or techniques may be of the most help with separating out different species from complex mixtures? Use of selective agars for culture Which of the following lists of mitotic stages is in the correct order? Interphase, prophase, metaphase, anaphase, telophase When a virus is noninfectious it is termed _. rickettsia, cyanobacteria Which microscope achieves the greatest resolution and highest magnification? Electron Which of the following parts of a virus is/are NOT always present? envelope Using the numbers 1-4, which of the following is the correct chronological sequence of events for the Gram staining procedure? 1) Apply iodine for 60 seconds and rinse.Ģ) Add crystal violet for 60 seconds and rinse.ģ) Apply safranin for 60 seconds and rinse.Ĥ) Add 95% ethanol for 10-20 seconds and rinse 2, 1, 4, 3 Microbes can be challenging to study because they often grow in complex communities and it may be difficult to separate the various species from one another to study individually. Fungi are photosynthetic Which of the following magnifies the specimen to produce the real image of the specimen? Objective lens The nucleocapsid is composed of the nucleic acid along with the capsid The endosymbiotic theory says that precursor eukaryotic cells acquired mitochondria by endosymbiosis with a/an _ ancestor, and others gained photosynthetic ability from endosymbiosis with a/an _ ancestor. ![]() They are very difficult to eliminate with antimicrobials They involve bacteria only Which of the following is the correct way to write the scientific name of this bacterium? Staphylococcus aureus Which of the following are present in viruses?Įndoplasmic reticulum None of the choices are correct Which microscope is the most widely used to show stained cells against a bright background? Bright-field The correct sequence of events in viral multiplication is adsorption, penetration, replication, assembly, maturation, release Disease-causing microorganisms are called pathogens The descriptive groupings of virus into categories such as icosahedral and helical are based on the shape of the nucleocapsid Which is NOT a characteristic of fungi?įungi include single-celled and filamentous forms.įungi can use a wide variety of nutrients.įungi are photosynthetic. They can accumulate on living and nonliving surfaces. ![]() They evolve and adapt to their surroundings. Which statement is NOT a characteristic of biofilms? Most viruses cannot be seen with a light microscope Which microscope does NOT use light in forming the specimen image? Electron Which of the following places the steps for microbial culture and identification in the correct order? inoculation, incubation, isolation, inspection, identification Which of the following characteristics refers to the microscope's ability to show two entities as separate and distinct? Resolving power All of the following are criteria that are used to classify different types of microbiological growth media EXCEPT: ![]() Most viruses cannot be seen with a light microscope Noncellular infectious protein particles are called Prions Which of the following is correct about viruses?
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