<h2>Replication </h2>
Explanation:
Meselson and Stahl began the experiment by growing E. coli in medium, or nutrient broth, containing a "heavy" isotope of nitrogen
When grown on medium containing heavy nitrogen the bacteria took up the nitrogen and used it to synthesize new biological molecules including DNA
After many generations growing in the heavy nitrogen, the nitrogenous bases of the bacteria's DNA were all labeled with heavy nitrogen and then the bacteria were switched to bacteria containing a light nitrogen and allowed to grow for several generations
They then measured the density of the DNA using density gradient centrifugation
Results obtained contained heavy DNA,Light DNA and hybrid of Light and heavy DNA
The experiment done by Meselson and Stahl demonstrated that DNA replicated semi-conservatively, meaning that each strand in a DNA molecule serves as a template for synthesis of a new, complementary strand
Had it been conservative mode of replication, DNA replication would have resulted in one molecule consisting of both original DNA strands (identical to the original DNA molecule) and another molecule consisting of two new strands (with exactly the same sequences as the original molecule)
d. carbohydrates store energy for a long time :)
1. The oil is mostly used for transportation, the coal for electric power, and around 13% are for export.
Explanation:
The United States are the biggest economy in the world. It is also a country that is abundant in pretty much all of the most demanded and needed resources, including the oil and the coal. Both of these resources fall into the category of nonrenewable ones, and their primary use is to get energy.
The oil and the coal are used in lot of different sectors. The oil is mostly used in the transportation, be it transportation of people or goods. The coal, on the other hand, is mostly used for production of electric power at the power plants. Not much of the coal is exported though, as the United States are huge consumers of it, so only about 13% of it is exported to other countries.
2. Between year 1 and year 11 the population sharply increases, between year 11 and year 9 it largely stagnates, between year 11 and 19 intracompetition has occurred, and after year 25 the population will drop down to a certain degree because of increased predation.
Explanation:
The pheasant population is on an island where it doesn't really have predators and there are more resources than what the initial population uses. This has caused exponential rise of the population between the years 1 and 11. Between year 9 and year 11 though, it is noticeable that the rise has pretty much stopped and the reason for that is that the population has reached its limit because of the limited resources, so an intracompetition occurs that stops the rise.
Over the coming years the population is largely stagnating in its numbers, but that will change after year 25. The reason behind that is that the family of coyote that moved in prey on the pheasants, so with such abundance of pheasants the number of coyote will skyrocket, while the number of pheasants will decrease.
Answer:
It is found in DNA
Explanation:
Nucleotide triplets (three nucleotides) of DNA and RNA molecules that carry genetic information in living cells. It's the set of rules used by living cells to translate information encoded within genetic material into proteins.
Answer:
Explanation:
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the San Andreas fault, site of many earthquakes in California