Biology Keystones: SA to Volume Ratio

Study Notes

Surface Area to Volume Ratio in Cells

Smaller cells possess a higher surface area to volume ratio, enhancing efficiency in transporting materials across the cell membrane.
Larger cells experience slower material movement due to a lower surface area to volume ratio caused by volume increasing faster than surface area.
Small cells are more efficient in reaction rates compared to larger ones.

Inefficiency of Large Cells

Large cells are limited in size due to the requirement for substantial resources.
A small surface area leads to bottlenecks in material absorption, hindering necessary exchanges at the cell membrane.

Cristae

Located in the mitochondria
Function to increase surface area for enhanced ATP production.

Alveoli

Tiny sacs found in the lungs
Serve to maximize the area available for gas exchange (oxygen and carbon dioxide).

Microvilli

Located in the small intestines
Increase surface area to facilitate food absorption during digestion.

Nephrons

Microscopic tubes situated in the kidneys
Increase surface area dedicated to the transport and filtration of urine and blood.

Brain Folds

Located within the brain
Expand the surface area for nerve tissues, aiding in the transmission of nerve impulses.

Dendrites

Finger-like extensions on nerve cells
Increase surface area to enhance the transmission of nerve impulses.

Tongue and Taste Buds

Located in the mouth
Serve to moisten food, facilitating digestion.

Description

Explore the impact of surface area on reaction rates in cells with this flashcard quiz. Understand how cell size influences efficiency and material exchange across the membrane. Perfect for revising key concepts in cell biology.