Quick Answer. According to Science NetLinks, cells convert energy for your body and continually divide to make more cells for growth and repair. The body has about 200 different types of cells, and specific cells have assorted jobs to do. The various shapes of body cells depends on each cell's job.
knock boots. verb - intransitive. to have sexual intercourse. They were knocking boots 'til sunrise. See more words with the same meaning: sex, sexual intercourse.
This sense of bootless has nothing to do with footwear. The boot in this case is an obsolete noun that meant use or avail.. That boot descended from Old English bÅt and is ultimately related to our modern word better, whose remote Germanic ancestor meant literally of more use..