What do proteins, polysaccharides and nucleic acids have in common? a. none of them are polymersb. they all contain nitrogenc. they are all polymersd. none of them contain phosphorous

Indica el nombre y la fucion de los vasos sanguineos que entran y salen de los riñones

After reading the paragraph below, answer the questions that follow. researchers have created a robot that has a very thin leg that is moved by cardiac (heart) cells contracting in unison. the robot, made of a polymer similar to that used in making contact lenses, is bathed in heart cells with supporting cells, which then attach to the robot and provide movement as they contract. all of the cardiac cells working together can cause the robot leg to move in a way that individual cells could not. this is an example of a. emergent properties of cells. b. energy flow through an ecosystem. c. adaptation. d. internal environment regulation.

What is the approximate time of death of the body temperature is 29.4 degrees celsius