Which of the following describes the function of the cell nucleus?
a. command and control
b. carries nerve impulses
c. protects and lines the body organs
d. provides the outside boundary of the cell

The correct answer is A. Command and control

Explanation:

The cell nucleus is a structure or organelle in eukaryotic cells that is usually placed in the center of the cell. The nucleus is important because in this the genetic material is contained and also the nucleus is the one that commands, controls and coordinates the activities that occur in the cell including reproduction, growth, metabolism, among others. This means the nucleus is the control center of the cell and therefore, the option that describes the function of the cell nucleus is "command and control".

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.