Mic 102 - Study guides, Class notes & Summaries

Microbe CORRECT ANSWER -Free living organisms so small that they are only visible under the microscope. -Viruses are not really microbes- they lack one key quality of living cells; the capacity to main their bodily integrity throughout their life cycle. -Exceptions: Epulopiscium fishelsoni is huge (600+ um), Mycobacterium leprae is not free living. -Bacteria, Archaea, Fungi, Protists. LUCA CORRECT ANSWER -Last Universal Common Ancestor= microbe -About 4 bya -Core features for cellular...

Structure of DNA CORRECT ANSWER 5'-->3' Anti-parallel 1 ring=pyrimidine 2 ring=purine A(2) + T(1) 2 H-bonds G(2)+C(1) 3 H-bonds *G and C have 3* DNA Replication CORRECT ANSWER Semi-conservative DNA Pol replicates 1000nt/second *errors only 1/10billion bp Why does the origin (oriC) have runs of A:T base pairs? CORRECT ANSWER Easy to break apart, only 2 H-bonds

Fungi: 3 major morphological groups CORRECT ANSWER 1. Multicellular filamentous molds -old food/classic fungus 2. Multicellular fruiting body formers -Fruiting bodies = Mushrooms (fungus is in the soil) 3. Yeasts -single celled Unique properties of Fungus: Cell wall CORRECT ANSWER Thematically similar to bacteria & archaea but contain differences eg: -Chitin: protein; insect shells are made of this -Mixed glycans: similar to peptidoglycan but in a dif order Can also secrete gl...

Bright Field Microscope CORRECT ANSWER Most widely used Dark object, bright background Examine stained and unstained specimens Made by putting light through specimen Dark field microscope CORRECT ANSWER Image is lighter than illuminated background Uses a condenser on the light microscope Phase contrast microscope CORRECT ANSWER Used with live specimen Produces image with specimen against gray background Can see internal cells Scanning electron microscope CORRECT ANSWER Detailed 3D...

Gene expressino regulated CORRECT ANSWER - transcriptional level - regulated by controlling mRNA synthesis - translational level - governed by controlling protein synthesis Activity level of proteins may be altered by CORRECT ANSWER post translational modification The term used to describe the metabolic pathway that uses DNA as a template for the manufacture mRNA is _____, and the pathway that uses mRNA as the template for the manufacture of protein is called _____. CORRECT ANSWER tr...

mic 102 final exam| questions and answers| 34 pages| with complete solutions

MIC 102 UC Davis Midterm 2| Questions And Answers| 21 Pages| With Complete Solutions

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...

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...

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 ...