proteoglycans are part of the extracellular matrix; they provide structure, viscosity and lubrication, and adhesiveness. they are composed of proteins conjugated to carbohydrate components called glycosaminoglycans. the glycosaminoglycan component makes up the majority of the mass of a proteoglycan.

What is the difference between electrically neutral objects and electrically charged objects

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.

Which statement best explains why the overall charge on an atom is zero?