In the example of adrenaline signaling used in the animation, suppose each amplification step produces hundredfold active molecules. A signaling pathway resulting from a single activated signal receptor results in the consumption of molecules of GTP and molecules of ATP. 1; 100 100; 1,000,000 10,000; 1,000,000 100; 1,010,000

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.

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f