Dna polymerase contains a built-in “proofreading” tool, which acts in a manner similar to a word processor spell-checker. what could happen if this tool didn’t exist?

The cell will undergo mutation.

Explanation:

DNA polymerases are the enzymes that are responsible for the DNA replication. These polymerases are also used for the proof reading ability of the enzyme.

The proofreading ability can occur in both 3' to 5' direction and 5' to 3' direction. These proofreading ability detects the mismatched base pair and removes them. The chances of mutation are decreased by the proofreading ability of enzyme. The absence of this enzymes leads to the large number of mutations and cause cell death.

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.

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.