A nucleotide can be misplaced in a DNA strand during replication. How are misplacements in DNA nucleotide strands corrected so that the final error rate is low?
by supercoing to inactivate the gene region in which a misplaced nucleotide has occurred
by the chemical action of special enzymes that can detect and replace misplaced nucleotides
by lysosomes that move along the strands removing any strands of nucleotides containing misplaced nucleotides
by the complementary DNA strand removing the misplaced nucleotides and connecting the open ends of the strand together

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.