Answer:
0.452 M
Explanation:
Remember that to get molarity, you have to go thru an equation:
M=mol/V (in liters)
So...
5.61 g NH4NO3 x 1 mol NH4NO3/80.043 g
=0.0701 mol NH4NO3
Convert mL to L
=155--->0.155 L
Plug in and divide.
0.0701/0.155
=0.452 M
Pangea was the only continent before the flood.
Most cells contain two forms of RNA polymerase. The "core" polymerase is the part that carries out transcription of a gene where the DNA sequence is copied to produce a single-stranded RNA molecule. The core polymerase binds DNA non-specifically as you might expect for a DNA binding protein that has to travel down a large number of different genes.
<span>When transcription is terminated the core RNA polymerase is released. In order to start a new round of transcription, the core RNA polymerase has to be directed to bind at a promoter, defined as the specific DNA sequence where transcription is initiated. There are specific DNA binding factors that bind to promoters </span>and<span> to RNA polymerase. That's how they direct RNA polymerase to the place where transcription has to start. These factors bind first to core polymerase forming the second form of RNA polymerase called the holoenzyme.</span>
<span>The binding parameters of the </span>E. coli<span> core polymerase and the holoenzyme have been studied in detail. In </span>E. coli<span> cells there are several different versions of holoenzyme. Each one contains a different initiation factor that binds to a different series of promoters. The most common initiation factor is called σ</span>70<span> (sigma-70) and it binds to most of the promoters in the cell.</span>
The steps in transcription initiation are shown in the figure. First, holoenzyme consisting of core polymerase + σ70<span>, binds non-specifically to any stretch of DNA. It then moves along the DNA in a one-dimensional search until it finds a promoter sequence. This is followed by a local unwinding of the DNA and synthesis of a short piece of DNA. </span>
Explanation:
<u>DIFFERENCE:</u>
The difference between element and compound is that the element is the substance which is made of same type of the atoms, whereas the compound is made of different elements which are combined in definite proportions.
<u>SIMILARITY:</u>
Elements and Compounds both contains atoms. They both have bonds linking atoms together. They both are pure substances and homogeneous in composition.
Examples of elements include copper, hydrogen, oxygen, etc.
Examples of compounds include water, salt NaCl, etc.
Answer: endothermic
Explanation:
If the products contain more chemical energy, energy is absorbed, and thus the reaction is endothermic.