Unwinds and unlinks the two strands of dna

Assignment Help Chemistry
Reference no: EM13729532

In a eukaryote, transcription takes place in the cytoplasm (prokaryote) or in the nucleus (eukaryote). The transcription is performed by an enzyme called RNA polymerase. To make mRNA, RNA polymerase:

  1. Binds to the DNA strand at a specific sequence of the gene called a promoter
  2. Unwinds and unlinks the two strands of DNA
  3. Uses one of the DNA strands as a guide or template
  4. Matches new nucleotides with their complements on the DNA strand (G with C, A with U -- remember that RNA has uracil (U) instead of thymine (T))
  5. Binds these new RNA nucleotides together to form a complimentary copy of the DNA strand (mRNA)
  6. Stops when it encounters a termination sequence of bases (stop codon)

mRNA is happy to live in a single-stranded state (as opposed to DNA's desire to form complementary double-stranded helixes). In prokaryotes, all of the nucleotides in the mRNA are part of codons for the new protein. However, in eukaryotes only, there are extra sequences in the DNA and mRNA that don't code for proteins called introns.

Verified Expert

Reference no: EM13729532

Explain how many grams of tc would form at the cathode

Assuming a current efficiency of 100%, if this same current is passed through a solution of TcO4 for the same amount of time, how many grams of Tc would form at the cathode

Compare column of mercury to a column of water

Compare the length of a column of mercury to that of a column of water required to produce a pressure of 1.0 bar. the densities of mercury and water at 0C are for mercury 13

Explain substances and water during dissolution

Classify the substances CaCl2, CuSO4, NH3, C2H5OH according to the strongest solute-solvent interaction that will occur between the given substances and water during dissolu

Define what is the annual chemical cost of treaing

Define what is the annual chemical cost of treaing 0.050 m3/s of this water? Suppose the lime is 90% pure and the soda ash is 97% pure. The ion concentrations reported below

What type of energy is used to move the lever

The flashlight in the photo does not use batteries. Instead, you move a lever, which turns a geared mechanism and finally results in light from the bulb. What type of energy

State what was the initial concentration

A zero-order reaction has a constant rate of 3.40×10?4 M/s . If after 30.0 seconds the concentration has dropped to 8.00×10?2 M , what was the initial concentration

What is the formula of the barium halide

if .158g of baruim halide is completely precipitated with H2SO4 and .124g of BaSO4 is collected,what is the formula of the barium halide?

How tall is the cylinder

Alfred bought a new graduated cylinder for his chemistry class. It holds 416 milliliters of liquid. If the cylinder has a radius of 4 cm, then how tall is the cylinder?


Write a Review

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd