Professor Marcus is studying gene expression in the liver cells of a mouse. She observes that when a steroid hormone enters the liver cells, the cells begin producing a wide variety of new proteins.

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

Dna and rna share a number of similarities,but they also differ in certain aspects of their structure. wich nitrogenous base is found in rna but is not found in dna

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.