Mic 102 exam questions - Study guides, Class notes & Summaries

MIC 102 Unit 6-1 Exam Questions and Answers All Correct Which two of the following are surface barriers that microorganisms must overcome to establish an infection? - Answer-skin mucous membranes Immunology is the study of . - Answer-immune responses to foreign substances and microbes The gastrointestinal, genitourinary, and respiratory tracts are internal structures connected with the environment, and are lined with . - Answer-mucous membranes The outermost layer of human skin provid...

MIC 102 Exam 1 Questions with Correct Answers Which type of cell is most susceptible to osmotic lysis in an environment with a very low concentration of solutes (hypotonic)? - Answer-Mycoplasma Which of the following cellular structures self-assemble (purified monomers can assemble into the structure without added factors or the input of energy)? - Answer- Flagellar filament Phospholipid bilayer S layer mycoplasma - Answer-only prokaryotic group listed that do not have a cell wall to r...

Light microscopy CORRECT ANSWER - Uses visible light to examine microscopic-sized objects that cannot be seen by the naked eye. - Allows finer detail than the naked eye. Electron microscopy CORRECT ANSWER - Visualize objects much smaller than those resolved optically. - Use accelerated electrons instead of light photons. - Samples are fixed with chemicals to cross-link molecules to preserve their structure. Fluorescent stains CORRECT ANSWER - Used with light microscopy. - Fluorescence ...

antibiotic- old and new definition CORRECT ANSWER - originally referred to any compound produced by one species of microbe that could kill or inhibit the growth of other microbes. -today the term is also used for synthetic chemotherapeutic agents that are clinically useful but chemically synthesized. Selective toxicity CORRECT ANSWER -a quality of an antibiotic - Antibiotic must selectively kill or inhibit the pathogen but not the host, How is selective toxicity possible? CORRECT ANSWE...

What are the different types of microscopy and staining and when are they used? CORRECT ANSWER Types of microscopy include: light microscopy- used primarily to get an idea of the form of the bacteria, used in combination with staining to get an idea of Gram positive and Gram negative protein. Green fluorescent is used to observe cell occurrences like binary fission and movement of proteins. Electron microscopy is very detailed at getting an idea of what is occurring inside and outside of the ce...

MIC 102 Exam Questions with Correct Answers What are the three main subgroups of Eukaryotes? - Answer-Algae, Protozoa, Fungi What subgroup does Algae and Protozoa make? - Answer-Protists DESCRIBE THE ROLE OF A PLASMA MEMBRANE AND A CELL WALL. - AnswerWhat's the difference between Basic & Differential Stain? - Answer-Basic Stain: Allows you to determine the basic structure of a bacteria (rod, etc) Differential Stain: Uses more than one stain --> most popular: the gram stain. Why wou...

MIC 102 UC Davis Exam Questions with Correct Answers What is a microbe? - Answer-"free-living organisms so small that they are only visible under the microscope" Are their exceptions to the definition to microbes? - Answer-Yes, some microbes are hug, not free-living, or organisms What is LUCA? And how does it relate to microbes? - Answer-Last Universal Common Ancestor is thought to be what all organisms have evolved from over 4 billion years. Specifically though, the LUCA is thought ...

Light Microscopy CORRECT ANSWER Used alongside differential staining i. Gram Staining: identifies gram (+) or gram (-) ii. Fluorescent stains: used to study molecule interaction/aggregation in certain tissue, cell, etc. 1. GFP used to study protein localization Cryo-electron microscopy CORRECT ANSWER Used to visualize objects (e.g. individual atoms) and finer structural cellular details much smaller than those resolved optically Cryo-electron tomography CORRECT ANSWER Creates 3D visua...

The prokaryotic members of the microbial world include CORRECT ANSWER Bacteria and Archaea The Archaea CORRECT ANSWER Are microscopic Are commonly found in extreme environments Prokaryotes typically do not have A. Cell walls B. Flagella C. A nuclear membrane D. Specific shapes E. Genetic information CORRECT ANSWER C. Nuclear Membrane Nucleoids are associated with 1. Genetic information 2. Prokaryotes 3. Eukaryotes 4. Viruses 5. Prions CORRECT ANSWER Genetic infor...