Biology question and answers for October 29, 2023
- Q Between April 1 and May 15 of one year, 22 children in three states developed diarrhea, fever, and vomiting. The children had each received pet ducklings. Gram-negative, facultative anaerobic bacteria...
- Q You add an appropriate amount of an antibiotic to a turbid broth culture of bacteria, and within a few minutes the culture visibly clears. a) Can you tell the mechanism...
- Q Determine whether the given statements describing prokaryotic organisms is true or false.Prokaryotic organisms occupy environments where other organisms could not survive.Prokaryotic organisms are important producers of organic carbon compounds.Over 75%...
- Q The sludge removed from earlier steps in wastewater treatment can further be broken down into stable solids and methane (natural gas) by:a) aerobic digestionb) disinfectionc) anaerobic digestiond) sedimentation
- Q You grow a pure culture of Mycoplasma pneumoniae and notice that the cells vary in shape, with some being rods, others cocci, and others are coccobacilli. This phenomenon is best...
- Q The purpose of heat-fixing a bacterial smear is:a) to make the sample stick to the slideb) to inactivate the enzymes of the bacteria, so they don't lead to degradation of...
- Q If this experiment was repeated and the entire set up was placed in a dark closet, predict what would happen to each of the organisms in the jar. Use your...
- Q The growth temperature is a small range of temperatures in which the microbeexperiences the fastest rate of metabolism and growth.two of these are correctoptimumminimummaximum
- Q 11. The salinity of a small inland lake has recently started to increase. Researchers are planning to study the lake over several decades to investigate how freshwater organisms survive significant...
- Q Gonorrhea can be treated with antibiotics such asamoxicillinampicillinazithromycinall the choices
- Q If a fly landed on animal feces, picked up Salmonella on its feet, and then transferred the bacteria to food by walking on it, the fly would best be termed...
- Q Which of the following best describes the patterns associated with the microbial death phase of the growth curve?a. None of the above, we don't talk about cell deathb. the cells...
- Q Consumption of a buffet food item contaminated with Staphylococcus aureus at awedding reception results in many people becoming ill. This would best be describedas a:A) pandemicB) zoonosisC) vertical transmissionD) point...
- Q Order the following steps a microorganism takes in the process of establishing disease.1234Microbe overcomes host defenses.Microbe attaches to receptor on host.Microbe enters through its portal of entry.Disease is established.
- Q Endotoxins are...a. the most lethal substances knownb. encoded by bacterial plasmids or phagesc. proteins usually with two parts: A and Bd. generally degraded by autoclaving (121C for 20 minutes)e. none...
- Q Biology why is it important to reduce the amount of biodegradable organic matter and nutrients during sewage treament?
- Q Discuss the factors which contribute to limitation of sagostarch usage in food products. Suggest modification stepsthat need to be taken to further enhance its potential asfunctional ingredient in food industry.
- Q For enzymes, shapematches function.Once a substrate ismatched to anenzyme in "lock andkey" fashion it is a(n)A. active molecule.B. polypeptide bond.C. substrate enzyme complex.D. functional protein.
- Q In higher order protista and eukaryota, the nuclear membrane dissolves completely, and the process is called [? ]. meiosismitosisbinary fission
- Q Condensed, packaged DNA is called a chromosome and loose DNA is/are [?] that is/ are open and readable. ..chromatinchromatidshistones
- Q Cell division in [?] is more complicated than prokaryotes due to the presence of a encasing the DNA. eukaryotesfungiarchaea
- Q You just transferred your bacteria into another tube. You want the bacteria in this tube to multiply quickly so you'll have enough bacteria for your next experiment in 1-2 days....
- Q Which method you wouldn't use to differentiate Proteus vulgaris from Salmonella sp.?A. Urea testB. Inoculation to BAPC. EnteroPluri test tubeD. Inoculation to McConkey agarE. All tests can be used
- Q The Mountain Pine Beetle vs an EcosystemThe lodgepole pine grows in the North American west, as far northas the Yukon. It tolerates most soil conditions; cold, wet winters;and warm, dry...
- Q In a carbohydrate fermentation test, how do you know if the bacteria fermented the carbohydratein the medium?The pH increases when bacteria ferment the carbohydrate and the pH indicator turns redThe...
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