GROWTH DEVELOPMENT CHILD
GROWTH AND DEVELOPMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Larger cells are easier for an organism to produce than smaller cells.
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The cells ability to exchange a substance is limited by its surface area to volume ratio.
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The larger the cell becomes, the easier it is for substances to reach where they are needed.
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The size of a cell has no relationship to the cell’s function in a multicellular organism.
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Detailed explanation-1: -Cell size is limited due to the inability of very large cells to provide nutrients and water and remove wastes in an efficient manner. The size of a cell is limited by the relationship of the cell’s outer surface area to its volume or its surface area-to-volume ratio. Thus, the correct answer is option A.
Detailed explanation-2: -Cell size is limited by the surface area to volume ratio of the cell. As the volume of a cell increases, it becomes harder to efficiently transport materials in and out of the cell.
Detailed explanation-3: -Cells are limited in size by their surface area to volume ratio. That is, their plasma membrane (surface area) must be large enough to import nutrients and excrete wastes for the entire cytoplasm (volume) of the cell. As cells get larger, their surface area to volume ratio increases, which is why cells are very small.
Detailed explanation-4: -As a cell’s volume increases, its surface area increases, but at a decreased rate. If you continued to increase the cell’s volume, it would soon be unable to efficiently exchange materials and the cell would die.
Detailed explanation-5: -Cell size is limited by the cell’s surface-area-to-volume ratio, such that cells cannot become so large that the surface of the cell is insufficient to take in nutrients and remove wastes.