Answer:
A positive result.
Explanation:
Biuret test is a test performed to check whether proteins are present in a given sample or not. If the solution changes its colour to violet then it means that the sample contains proteins. If the colour is not changed to violet, then the result would be negative and protein would not be present in the sample.
Steaks contain a rich amount of protein. Hence, when Biuret test is performed for a steak solution, the results will be positive. The steak sample would change colour to violet.
<span>Most of the nitrogen gas in Earth's atmosphere comes from _____.
</span>
<span>
D. the breakdown of carbon dioxide</span>
B) They should test their hypothesis before coming to that conclusion.
The three major types of pollution are air pollution, water pollution, and land pollution. Sometimes, air pollution is visible. A person can see dark smoke pour from the exhaust pipes of large trucks or factories, for example. More often, however, air pollution is invisible.
Addition of a nucleotide onto a DNA is an endergonic reaction. In such reactions, the energy is provided by ATP.
ATP is the immediate source of energy for any endergonic reaction occuring in the body. Reactions such as addition of nucleotides are endergonic and anabolic reaction that is, these reactions consume energy which is provided by ATP.
