What is a Ball Bearing? The Function of Ball Bearings. From small and large motors to car axles to electric fans and hard disc drives (HDDs), ball bearings are used in a wide array of machines for rotary motion. Ball bearings support rotary parts and reduce friction to facilitate the smooth operation of machines.
Best Answer: a) Plant cells contain large central vacuole, chloroplasts (if it is a photosynthetic plant cell) and a cellulose cell wall not found in animal cells. b) Eukaryotic cells have their chromosomes (DNA) contained in a nucleus, prokaryotic cells don't.Eukaryotic cells have a true nucleus, bound by a double membrane. Prokaryotic cells have no nucleus. The purpose of the nucleus is to sequester the DNA-related functions of the big eukaryotic cell into a smaller chamber, for the purpose of increased efficiency.
What are the difference in how prokaryotic cells vs. eukaryotic cells in their number of chromosomes. Prokaryotes have 1 long circular strand, eukaryotes have many molecules of DNA. What are the difference in how prokaryotic cells vs. eukaryotic cell shave the shape of chromosomes.