Answer:
Choose a topic for your cell analogy. Below each topic heading are possible analogies for the topic. You can use them or come up with your own. The fourth column is a space in case you want to make your own analogy topic.
Explanation:
<h2>Answer:</h2>
Following are the four combinations of active or inactive regulatory proteins that could be present anytime in the cell:
- Active repressor , Active activator
- Active repressor, Inactive activator
- Inactive repressor, Active activator
- Inactive repressor, Inactive activator
The answer is 1 astronomical unit
