Practise AP Biology 2.2 questions by using surface-area-to-volume ratios, cell shape and membrane projections to explain how organisms exchange materials.
Students were using the formulas for the surface area and volume of a rectangular solid to model cells of different sizes and shapes. They produced the data shown in the table.
Identify the rectangular solid that represents the cell with the smallest amount of plasma membrane per volume of cytoplasm.
Describe the relationship between the dimensions of the rectangular solids and their surface area-to-volume ratios.
Using the data from the model, evaluate the hypothesis that cells shaped like rectangular solids 1 and 2 are better suited for slow metabolism and the long-term storage of energy-containing molecules than are cells shaped like rectangular solids 4 and 5.
Based on the trends shown in the data, explain why some rectangular cells include folds or projections in their plasma membranes.
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