Multiple Choice
Which of the following proteins is a transcription factor that activates genes to promote entrance into S phase?
16. Cell Division
Control of Cell Size
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In the context of the control of cell size, what most directly limits the maximum size of a cell as it grows larger?
A
A decreasing surface area-to-volume ratio that constrains nutrient uptake and waste removal across the plasma membrane
B
An increasing surface area-to-volume ratio that causes excessive loss of cytosolic proteins through the membrane
C
A fixed number of chromosomes that prevents additional gene transcription once the cell reaches a threshold volume
D
The inability of mitochondria to replicate, which stops ATP production entirely beyond a critical cell diameter
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