Cellular level

Atomic level

Organismic level

Submicroscopic molecular level

Glycolipids

Proline

Phospholipids

Cholesterol

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

Electron beam can pass through thick materials, whereas light microscopy requires thin sections

The resolution power of the electron microscope is much higher than that of the light microscope

The electron microscope is more powerful than the light microscope as it uses a beam of electrons which has wavelength much longer than that of photons

The resolving power of the electron microscope is 200-350 nm as compared to 0.1-0.2 nm for the light microscope