CELL STRUCTURES AND FUNCTION
CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If a cell is cubic shaped with each side having a length of 3 cm, what is the surface area to volume ratio of the cell?
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6:1
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3:1
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2:1
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1:1
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Explanation:
Detailed explanation-1: -For a cube of size 3: The surface area is 54 (6 sides, each 3x3). The volume is 27 (3x3x3). So the surface area:volume ratio is 2.
Detailed explanation-2: -What is the surface area of a cube if its height is 3 cm? Explanation: The area of one face is given by the length of a side squared. The area of 6 faces is then given by six times the area of one face: 54 cm2.
Detailed explanation-3: -The volume of cube is a3=33=27cm3.
Detailed explanation-4: -Dimension. For a given shape, SA:V is inversely proportional to size. A cube 2 cm on a side has a ratio of 3 cm−1, half that of a cube 1 cm on a side. Conversely, preserving SA:V as size increases requires changing to a less compact shape.
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