Cellular level

Atomic level

Organismic level

Submicroscopic molecular level

The chloroplasts are generally much larger than mitochondria

Both chloroplasts and mitochondria contain DNA

Both chloroplasts and mitochondria contain an inner and an outer membrane

Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane

The inner membrane is highly convoluted forming a series of infoldings

The outer membrane resembles a sieve

The outer membrane is permeable to all kinds of molecules

The enzymes of the electron transfer chain are embedded in the outer membrane

Microtubules of cilia are composed of tubulin

The organized beating of cilia is controlled by fluxes of Ca²⁺ across the membrane

Cilia are hair-like cellular appendages

Cilin contain an outer ring of nine doublet microtubules surrounding two single microtubules