Pg. 90 Gather Evidence As you explore the lesson, gather evidence for how the atoms in biomolecules are
separated and rearranged to make new biomolecules.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.

her affection for her parents makes her an especially sympathetic character.