Chemiosmotic coupling hypothesis is the most widely accepted explanation for oxidative phosphorylation in mitochondria and photophosphorylation in thylakoid membranes.
Mitchell proposed that a concentration gradient of protons is established across the mitochondrial membrane.
Microtubules are hollow microscopic tubular structures with an external diameter of 24 nm and of variable length.
They are composed of tubulin.
Intermediate filaments are the numerous microscopic protein fibres of about 10 nm thickness that form part of the cytoskeleton.
Glycocalyx is a sticky, gelatinous material that collects outside the cell wall of bacteria to form an additional surface layer.
Chromoplasts are yellow or reddish in colour because of the presence of carotenoid pigments.
They do not contain stored food material.
E.coli (bacteria) is prokaryote while Chlamydomonas (algae) is eukaryote.
It is the cell membrane which has similar organization in both the groups.
Ribosomes are amembraneous (ie. without membrane) cell organelle composed of rRNA and protein.
These are found in both prokaryotic and eukaryotic cells.
Fluid mosaic membrane model was proposed by Singer and Nicholson in 1972.
It is most accepted model of structure of biomembrane.
Except peroxisome the remaining three and ER are the parts of endomembrane system.
Golgi apparatus is the important site for formation of glycoprotein and glycolipid.
Peptide synthesis inside a cell takes place in ribosome.
Ribosomes are found in all cells and are involved in protein synthesis.
