11. what are the characteristics of living things\n12. on the macromolecules notes what is organic chemistry?

Brief Explanations:

For question 11, living things have characteristics like cellular organization, metabolism, growth, reproduction, response to stimuli, and homeostasis. For question 12, organic chemistry is the study of carbon - containing compounds, which are often associated with living organisms and play crucial roles in biological macromolecules.

Answer:

11. Cellular organization, metabolism, growth, reproduction, response to stimuli, homeostasis.
12. The study of carbon - containing compounds.