Hypothesis
Suppose we have four test tube each test tube is filled with solution extracted from different sources. Test tube 1 contain solution extracted from sugar cane, Test tube 2 contain solution extracted from green leaves, Test tube 3 contain solution extracted from seeds, and Test tube 4 contain egg white an albumin protein.
objectives
To find out which solution will react with biuret solution
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Materials and method
To prepare biuret solution, mix potassium sodium tartarate with cupric sulfate and sodium hydroxide. A blue solution will be formed.
Experiment
Pour a small amount of biuret solution in each test tube and heat them until precipitation is formed.
Results
After analyzing the experiment, it was found that no color changed in first three test tubes except the fourth one in which the color was changed from blue to pink-purple.
Discussion
It was deduced from results that appearance of pink-purple color indicate the presence of peptide bonds (proteins)
Conclusion
Biuret test is used for the confirmation of proteins in any food sample.
Silicates<span> are </span>minerals<span> that </span>contain silicon<span> atoms bonded to </span>oxygen<span> atoms. The basic building block for all </span>silicate minerals<span> is called a tetrahedron, where one</span>silicon<span> atom is bonded to 4 </span>oxygen<span> atoms. </span>Silicate minerals<span> also often </span>contain<span> other </span>elements<span>, such as calcium, iron, and magnesium.</span>
The nucleus of atoms are comprised of protons and neutrons.
The Nervous System and Endocrine Systems are the two systems which are responsible for controlling the whole body of an organism.
<h3>Which organ systems function as control systems, communicating with other cells/organs to regulate their activities?</h3>
The nervous system is the system which controls the system, major controlling, regulatory, and communicating system in the body. The nervous system is the center of all mental activity including learning, memory and thought. Together with the endocrine system, the nervous system is responsible for regulating and maintaining the homeostasis which helps to maintain the internal environment.
So we can conclude that the Nervous System and Endocrine Systems are the two systems which are responsible for controlling the whole body of an organism.
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