Many cities have combined sewers. in good weather, these systems funnel sewage to treatment plants. during rainstorms street runoff is combined with sewage. combined sewers in cities can be problematic because

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?

Immature bone cells, or osteoblasts, manufacture a protein called osteoid as well as several hormones. because of this, we would expect osteoblasts to contain numerous a) nuclei. b) ribosomes. c) lysosomes. d) golgi bodies.