Beckers World of the Cell Study Set 1
Quiz 4 :
Cells and Organelles
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Q54 Q54 Q54
A microbiologist has discovered what she thinks are two new types of photosynthetic cells.The first cell (organism 1)appears nearly cubic and is approximately 1.5 μm wide × 1.5 μm long × 1.5 μm deep.The second,larger cell (organism 2)is 5 μm wide × 15 μm long × 2 μm deep. a.What is the surface area/volume ratio of each organism? b.Based on what you know about the surface area/volume ratios,which organism will find it more difficult to interact with the surrounding environment? c.Suggest possible strategies that might allow the organism identified it part (b)to cope with its reduced capacity to interact with the environment. d.Which of these organisms is more likely to be a prokaryote?
Q55 Q55 Q55
Several biology students have just returned from a field trip in which they were asked to collect prokaryotes and eukaryotes.The eukaryotic organisms were to be divided into plant cells,animal cells,or "other." The students have access to a light and electron microscope.Can you suggest how they could determine whether these cells are prokaryotic or eukaryotic? How could they distinguish plant from animal cells?