Answer: The reason is because DNA polymerase which is the enzyme that catalyzes the synthesis of DNA has a 3'->5' exonuclease activity that double-checks each nucleotide after it is added.
Explanation: The 3'->5' exonuclease activity of DNA polymerase allows the enzyme to double-check and remove a newly added wrong nucleotide. It is highly specific for mismatched base pairs. When the DNA polymerase adds a wrong nucleotide to the growing strand, translocation of the enzyme to the position where the next nucleotide is to be added is halted, but the exonuclease activity of the DNA polymerase removes the incorrectly paired nucleotide so that replication can continue. The process of double-checking a newly added nucleotide and removal of any incorrectly paired nucleotide by the DNA polymerase is called proofreading.
Answer:
carbohydrate acts as an energy storage and structure for all living things
Plants and other multicellular organisms through the process of photosynthesis
Answer At its heart, the genetic code is the set of "rules" that a cell uses to interpret the nucleotide sequence within a molecule of mRNA. ... Because there are only 20 different amino acids but 64 possible codons, most amino acids are indicated by more than one codon.
Explanation:
<span>A buffer system is a system that keeps pH constant. This is very important in our cells because all of our enzymes needs a specifik pH value to work at optimum. If the pH changes our enzymes might denaturate which means death</span>