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.
When you knock, you bump or strike someone or something. When you hear a knock at the door, someone on the other side is thumping it with their knuckles. You can accidentally knock your grandmother's special glass bowl off the table, and you can also knock softly on her door â or tap with your knuckles â before you go in and tell her how sorry you are. If a car engine knocks, it makes a rattling or rapping sound. Colloquially, to knock something is to reject or criticize it, and if you do, you may hear the phrase, Don't knock it until you try it!.