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Biology

Quiz 15 :

Bacteria and Archaea

Quiz 15 :

Bacteria and Archaea

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Which of the following groups of characteristics defines prokaryotes?
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C

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Many bacteria have a shorter generation time at warmer temperatures.Why do food safety guidelines recommend rapidly cooling leftover foods and maintaining them at refrigerator temperatures?
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B

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Escherichia coli,a bacterium that normally lives in the gut of humans,will have the shortest generation time when it is found
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C

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Bacteria and archaea are both classified as
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Individuals who participate in research as experimental subjects are
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A prokaryotic cell and a eukaryotic cell are placed in an environment ideal for growth of both cells.After 24 hours it is observed that the prokaryote cell population is significantly higher than the eukaryote cell population.This has occurred because prokaryotes
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Why do prokaryotes reproduce more rapidly than single-celled eukaryotes?
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Prokaryotes are capable of reproducing more rapidly than eukaryotes because prokaryotes
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Citizen science projects contribute to scientific research by the public
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Citizens use an app to document the location of ash trees in their community.These citizen scientists are participating
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An experiment is performed to see if an antiseptic will change the skin microbiome.Skin swabs are used before an antiseptic is applied,after the antiseptic is applied,and on the same area 48 hours later.It is observed that the antiseptic drastically reduced the numbers of Staphyloccocus and other bacteria.After 48 hours Staphylococcus reappears as the most common species.What can be inferred from these results?
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As shown in the figure below,a single bacterium has a generation time of 10 minutes.Approximately how much time will have passed when the population is 100 cells? img
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Prokaryotes have an optimum temperature for growth.If a prokaryote can divide into two cells every 20 minutes when the temperature is 37oC,what would happen if the temperature dropped to 35oC?
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The generation time for a prokaryote is 30 minutes.If one cell is present on a petri dish,how many cells will be present after three hours?
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A single-celled organism has linear DNA enclosed within a nucleus.This organism must be a(n)
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Professional scientists benefit from citizen science because citizens
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As a group,prokaryotes
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If a professional scientist is trying to build an extensive database of bacterial swabs from humans in all parts of the world,what is the most cost-effective way to increase the number of samples collected in a one-year time period?
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Which of these comparisons is correct?
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Which of the following pairs of domains are MOST closely related?
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