The proteins function as enzymes to regulate the reaction rate, transport proteins to carry molecules inside or outside the cells, and as antibodies to fight against foreign particles. The storage and transmission of genetic information are not done by proteins but by DNA.
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Proteins are complex large molecules required for various functions in the body. They are essential for the function, structure, and regulation of the organs and tissues. Proteins are composed of a large number of small units known as amino acids. These amino acids are linked to each other to form a long chain. The amino acids are 20 in numbers and are combined in different combinations to specify a particular protein and its function.
The process through which amino acids are assembled to form a protein sequence is called translation. During translation, the codon sequence in mRNA (messenger RNA) is converted into the amino acid sequence of proteins with the help of ribosomes and transfer RNA to produce a functional protein.
The proteins are found in different forms to perform different functions:
Antibodies: These are the proteins that target the foreign particles and defend the body against any infection. They diffuse into the bloodstream to be utilized by the immune system to identify and perform a defense mechanism against invaders.Enzymes: this form of protein enables the speeding up of a biochemical reaction and is therefore known as a catalyst. For example, pepsin is used as a digestive enzyme for the degradation of proteins present in the food ingested.
Transport proteins: The proteins which act as carriers for the movement of molecules from one location to another are called transport proteins. For example, hemoglobin is used for the transportation of oxygen throughout the body with the help of red blood cells.Hormonal proteins: The hormonal proteins help in coordinating the functions of the body, such as insulin protein, which controls the blood-sugar level.
Grade: Middle School
Proteins, translation, ribosomes, tRNA, mRNA, amino acids, codon, antibodies, enzymes, hormonal proteins, transport proteins, insulin, hemoglobin, red blood cells, oxygen, blood-sugar level, immune system.
The right occupychristmas.org is A.
Storing and transmitting the genetic information is the role of the DNA.
Proteins are biological macromolecules found in all living cells. They are formed of one or more polypeptide chains. Each of these chains consists of the sequence of amino acid residues linked together by peptide bonds. They can have multiple roles depending on their structure and composition