Each person normally has one pair of sex chromosomes in each cell. Females have two X chromosomes, while males have one X and one Y chromosome. Early in embryonic development in females, one of the two X chromosomes is randomly and permanently inactivated in cells other than egg cells.
Lesson Summary. You should now understand that DNA helicase has a very important job to do. It is responsible for opening up our DNA to allow for replication as well as transcription of our DNA. A DNA helicase is an enzyme that functions by melting the hydrogen bonds that hold the DNA into the double helix structure.hat is, until they meet DNA helicase. In order for DNA polymerase (in replication) or RNA polymerase (in transcription) to see the nucleotide bases that are to be used as a template, these hydrogen bonds must be broken to expose the much-needed the nucleotide bases.
Catalase is important for living things because it helps speed up chemical reactions .Functions to catalyze the decomposition of hydrogen peroxide to water and oxygen.atalase is very important due to the fact that is breaks down H202 or hydrogen peroxide, which is in the cells of our living tissue. This enzyme prevents cellular damage and â¦ can prevent H202 from killing a cell in animal and human tissue. 10 people found this useful.