Saturday, April 6, 2019

Role for bioremediation Essay Example for Free

Role for bioremediation EssayChapter 1 Which one of the future(a) is non a role for bioremediation? Curing infectious diseases All of the sideline(a) atomic number 18 examples of new emergent infectious diseases except Chickenpox Normal microbiota Beneficial microbial inhabitants of the body Golden Age of Microbiology fast discovery of basic microbiology principles Re-emerging diseases Once controlled by preventative public health measures they are now on the rise Prions Resistant to the usual sterilization procedures for pathogens Spontaneous generation The converse of biogenesis Acellular infectious agent Chemical composition includes RNA or DNA In the scientific name group B anthracis, the term Bacillus is the genus name include the agents responsible for stomach ulcers and plague bacteria are prokaryotes Bacteria impart distinctive flavors in foods such as yogurt and cheese Bacteria are nurse intracellular parasites Viruses have a protein coat that surrounds the gene tic information Viruses include molds and yeasts Fungi contain the phylum Protozoa and algae Protists derive their energy from degrading organic materials Fungi are the about metabolically versatile group Bacteria Which one of the following sequences exhibits increasing size? Viruses to bacteria to protozoa Which one of the following would be consistent with the idea of spontaneous generation? Sick people give rise to microorganisms in their bodyChapter 3 The gram stain technique is valuable in distinguishing different types of bacteria unitary of the below is wrong permit eukaryotic motility Flagella are involved in group translocation Chromosomes run components of the electron have a bun in the oven chain for ATP generation Plasma Membranes may have peritrichous or polar arrangements Flagella are linear rods contained within a nucleus Chromosomes replication is followed by binary nuclear fission Chromosomes are closed circular single molecues Chromosomes are used for chemo taxis Flagella involved with signal sequences in secretion Plasma Membranes Nucleoid Stores native genetic information Glycocalyx Prevents phagocytosis attachment Plasmid Contains a few genes not essential for cell-Metachromatic granules Site of nutrient accumulation in cell Fimbriae Short straight hair-like fibers-Gram (-) cell fence in Rigid outer boundary A bacterial arrangement called a sarcina has which of the following morphological shapes? Spheres in packets of eight All of the following characteristics apply to the prokaryotes except they reproduce by mitosisChapter 4 A derivative medium is one thatdistinguishes colonies of one type of bacterium from those of another type Which of the following conditions are most likely to affect the increase of bacteria? temperature, group O, and pH At what point in the bacterial begetth curve are bacteria the most vulnerable to antibiotics log phase Which of the following methods of measuring nation fruit is a direct count stand ard plate count using a dilution serial publication Faculative bacteria are those thatgrow in the presence of absence of oxygen Most of the human pathogens are mesophiles10. 0001 out of 11 points Mesophiles this group has most of the the pathogens as they grow at body temperature Halophile would grow on selective media containing relatively high levels of salt Alkaphile they can tolerate a pH higher up 8.5 Psychrotroph can be found increment in the human stomach Anaerobe they do not or cannot use oxygen Hyperthermophile these have been found in sea body of water from hot water volcanic vents Microaerophile they proceed in environments where O2 concentration is relatively low precisely are inhibited by high O2 levels concur aerobe this group requires oxygen for metabolism, just like humans Acidophile can be found growing in the human stomach Facultative Anaerobe they grow best in the presence of oxygen but can grow in the absence of oxygen Barophile they are able to live at t he butt of the ocean-The interval of time between successive binary fissions of a cell or nation of cells is cognize as the generation time -Psychrophiles and thermophiles differ with respect to their best temperature for growth A disgrace sample is added to a culture medium that has been designed to promote the growth of the genus Pseudomonas while inhibiting the growth of fungi. This test uses a selective mediumChapter 5 Low temperature isbacteriostatic Heavy metals generally start microorganisms byreacting with protein sulfhydryl groups to disrupt function Chlorhexidine is a biguanide used towash hands and clean wounds superficially The chemical counterpart of the autoclave usesethylene oxide with an inert gas HEPA filters are used to filter which one of the following? Air Ultraviolet light is valuable for reducing the microbial population in the air of a hospital room Of the following, the most efficient method for sterilization of a bacteriological transfer coil is the d irect flame Triclosan destroys bacteria bydisrupting cell membranes Which one of the following elements would be classified as a halogen Chlorine Moist agitate kills microorganisms bydenaturation A substance that has been pasteurizedis not considered uninspired5 out of 8 pointsAutoclave vegetative microorganisms, and endosporesDirect Flame Vegetative microorganisms, and endosporesBoiling water for 10 minutes Vegetative microorganisms, not endospores Hot air oven for 2 hours at 160 degreesCelcius Vegetative microorganisms, and endospores Pasteurization Pathogenic microorganisms, not endosporesGamma radiation Vegetative microorganisms, not endosporesFiltration Pathogenic microorganisms, not endosporesUltra-high-temperature (UHT) treat Vegetative microorganisms, not endosporesWhen food has been saltedwater diffuses out of microorganisms causing them to shrivelChapter 6 The Krebs rack accounts for all the following exceptproduction of pyruvate from glucose Heat is useful in the des truction of bacteria because heat denatures enzymes by altering their tertiary structures 10.99956 out of 13 points yields pyruvate for use in the TCA cycle Glycolysis requires cytochromes for electron transport Oxidative phosphorylation requires electrons eventually be passed to NADPH Photosynthesis Requires energy from light to take place Photosynthesis ends with acceptance of electrons by oxygen atoms Oxidative phosphorylation starts with the oxidation of NADH TCA Cycle requires an investment of 2 ATPs Glycolysis uses chlorophyll as the pigment in the blue-green algae Photosynthesis results in the formation of water Photosynthesis is essentially the opposite of aerobic respiration Photosynthesis begins with a glucose molecule Glycolysis results in the net gain of 2 ATPs Glycolysis generates two carbon dioxide molecules per turn TCA Cycle Which one of the following does not involve a phosphorylation reaction? The hydrolysis of ATP Which of the following states is the most co rrect for enzyme reactions Enzymes are specific for save one reaction, generally in one direction All of the following apply to the process of constructive metabolism except the process is exergonic You are studying an obligate anaerobe. Which one of the following pathways can you be informed is occurring? Glycolysis A bacterium that uses glucose as an energy source has been isolated from an anaerobic environment. After the growth of the bacterium, the pH of the growth medium is measured and found to be very acidic. When analyzed, the medium is found to have a high concentration of lactic acid. This bacterium is most likely metabolizing by a process known as fermentation

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