How are new molecules of dna synthesized in living cells?

It begins with the unzipping of the double helix by helicases. Unzipping forms y-shaped replication forks exposing promoter regions (TATA regions) where the initiator proteins and factor bind to the regions of DNA. A primer also attaches to the region. DNA polymerase then binds to the regions and begins adding DNA nucleotides to the 3’ end of the primer based on the nucleotides on the template strand. Topoisomerase continues to unwind the DNA as the polymerase progresses to the end of replication.

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.