Question

As director of the Royal Ballet, you are intrigued by the similarity between your nightly show and the cell cycle. Each night the theater fills, the lights go out, the curtain rises, the dancers perform, the curtain falls, the lights go on, and the theater empties; a defined sequence of events, just like the cell cycle. You wonder whether checkpoint mechanisms might enhance theater operations, as they do in the cell cycle. As a first step, you set out to design a system so that when all the seats are filled, the curtains will automatically rise. You have the engineers place sensors in each seat to detect a seated person. But you haven’t decided how to connect the sensors to the curtains. Which of these options a cell would use?

Group of answer choices

None of the above

Each sensor to send out a negative signal that will stop the curtain going up until every seat is filled.

The sensors to send out a positive signal that in aggregate will be enough to raise the curtain.

Answer 1