Essential Cell Biology, 4th Edition

Published by Garland Science
ISBN 10: 0815344546
ISBN 13: 978-0-81534-454-4

Chapter 7 - From DNA to Protein: How Cells Read the Genome - Questions: Question 7-7 A

Answer

An individual ribosome can make only one type of protein. False.

Work Step by Step

Proteins are made up of a combination of different amino acids linked together. There are many messenger ribose nucleic acid (mRNA) in the cytoplasm which contains a specific sequence of codons which code for the order in which the ribosome builds these amino acid up into a protein. For example, a ribosome that binds to an mRNA strand containing the sequence of codons to produce myosin (a protein in muscle fibers), the ribosome will translate the codons into amino acids which eventually will produce myosin. On the other hand, another ribosome that binds to an mRNA strand containing the sequence of codons to produce a separate protein called fibrin (protein in blood clotting) will translate the codons into producing amino acids that eventually form fibrin. Although the ribosome's structure and function is the same, the mRNA strand produced from the process of transcription is specific to the protein the body chooses to build.
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