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- Which metric unit is most appropriate for expressing the size of bacterial cells? a). nanometer b). centimeter c). meter d). micrometerWhat is crypto? Rearrange the microorganism according to their resistance to radiation (Gram-negative bacteria, molds, Gram-positive, bacteria, yeasts, sporesare onion cells gram positive or gram negative and are cheek cells gram positive or gram negative.
- Explain what would happen if: Kerosene is spread in a ditch having mosquito larvae.what is the purpose of steaming the slide while applying malachite green in the endospore stain? a)To attach to the bacteria slide b)To create spores immediately c)To force the stain to penetrate the thick spore coat d)To ensure the bacterial cells are stained a red color e)To lyse the cell wall and kill the bacteriaConsidering what you know about molds and yeasts, why do you think that we do not use the same nutrient agar used for bacteria to grow yeasts and molds
- What can be found on a sterile surface? A. Protozoan B. Viruses C. Nothing D. BacteriaThere are five bacteria in a petri dish and its number triples every minute. How many bacteria are in the petri dish after 10 minutes.?What is the main component of a diatom shell?a. agarb. peptidoglycanc. silicad. calcium carbonatee. paramylon
- A classmate claims that there are the same number of cells first placed on a NA plate with their fingertip before and after incubation. They point out the number of colonies after incubation as evidence. Is this true or false, and why? Choose the best answer. True; the individual cells grow in size, but not in number, creating the colonies seen after incubation. False; there are more colonies after incubation than the number of cells first placed on the plate. False; the number of cells first placed on a dish with their fingertip is the same number of colonies seen after incubation, but the number of cells after incubation has increased. False; the number of colonies has no relationship with the number of cells first placed on the plate.Which correctly characterizes the difference between gram+ and gram- bacteria? Group of answer choices gram+ have circular chromosomes, gram– have linear chromosomes gram+ have peptidoglycan, gram– have pseudomurein gram+ have ester-linked lipids, gram– have ether-linked lipids gram+ have a thick layer of peptidoglycan and gram– have thinner layer of peptidoglycanIf you are working in a lab and a patient enters with suspected malaria what would you do next? What tests you would run and why? what would you do if the test is negative? What could be the reason for negative results?