Answer by Shania60. Confidence votes 21. the function of a muscle cell is, by definition, to move. this can be accomplished when the cell contracts. contracting makes it denser, which is why when you feel a relaxed muscle in your arm suddenly tense up, it hardens.nswer by Shania60. Confidence votes 21. the function of a muscle cell is, by definition, to move. this can be accomplished when the cell contracts. contracting makes it denser, which is why when you feel a relaxed muscle in your arm suddenly tense up, it hardens.
Cobwebs and spider webs are different things. Spiderwebs are spun from their silk, and you will usuallysee the spider at home in the web. Cobwebs are a mixture of dust and whatever glues the dust together-sorry-I can't be more specific on that part.
Living things are made of four types of molecules, known as macromolecules: proteins, lipids (fats), carbohydrates (sugars) and nucleic acids (DNA and RNA).Each type of macromolecule is made of its own building blocks, which are connected like Legos to form different shapes.arbohydrates. Carbohydrates are sugars. A carbohydrate can take the form of a simple sugar, such as table sugar, or long fibers that are part of wood. Carbohydrates are made of building blocks called monosaccharides. Table sugar, called sucrose, is formed by the joining the two monosaccharides glucose and fructose.