2C: Why are cells so small? Flashcards
One principle reason cells are so small is so that
the distance that molecules have to travel in, around, and out of a cell is shorter and faster.
Villi have a larger surface area to volume ratio when they are…
long and thin
How can eukaryotic cells maintain high SA:V ratio when increased in size?
Elongation
Membrane extensions (villi)
Cellular compartments (organelles specialized to perform particular functions)
What happens to the SA:V ratio of a spherical cell as its volume increases?
The ratio decreases as the volume increases.
Which leaf shape is optimal for maximising the rate of photosynthesis in a low light environment?
a large surface area and thin plane
a small surface area and thin plane
a large surface area and thick plane
a small surface area and thick plane
A large surface area and thin plane
