Introduction To General, Organic, And Biochemistry
12th Edition
ISBN: 9781337571357
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Textbook Question
Chapter 25, Problem 1P
Does the term gene expression refer to:
(a) transcription, (b) translation, or (c) transcription
plus translation?
Expert Solution & Answer
Interpretation Introduction
Interpretation:
The term gene expression refers to transcription, translation or transcription plus translation is to be determined.
Concept Introduction:
A biological process in which the information present in DNA is copied to RNA (mRNA) is known as transcription. The initiation of transcription takes place in the presence of RNA polymerase. A biological process in which the information present on mRNA is copied to tRNA is known as translation. The formation of protein takes place during translation.
Answer to Problem 1P
Correct answer:
The correct option is (c).
Explanation of Solution
Reason for correct option:
(c) The synthesis of protein by the use of genetic information from DNA is termed as gene expression. In the other words, activation of genes takes place during gene expression. The information from DNA is transferred to mRNA (transcription) which further transfers it to tRNA (translation) where synthesis of protein takes place.
The activation of gene takes place in two steps, transcription and translation as shown below.
Figure 1.
Conclusion
Reasons for incorrect options:
(a) The synthesis of protein by the use of genetic information from DNA is termed as gene expression. Protein is not synthesized during transcription. Hence, term gene expression does not refer to transcription.
(b) The synthesis of protein by the use of genetic information from DNA is termed as gene expression. The formation of protein does not start from translation. Hence, term gene expression does not refer to translation.
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Chapter 25 Solutions
Introduction To General, Organic, And Biochemistry
Ch. 25.1 - Prob. 25.1QCCh. 25.2 - Problem 26-1 DNA is highly condensed in the...Ch. 25.3 - Prob. 25.3QCCh. 25.4 - Prob. 25.4QCCh. 25.5 - Prob. 25.5QCCh. 25.6 - Prob. 25.6QCCh. 25.7 - Prob. 25.7QCCh. 25.8 - Prob. 25.8QCCh. 25.9 - Prob. 25.9QCCh. 25 - Does the term gene expression refer to: (a)...
Ch. 25 - Prob. 2PCh. 25 - Where does most Of the translation occur in a...Ch. 25 - Prob. 4PCh. 25 - Prob. 5PCh. 25 - Prob. 6PCh. 25 - Prob. 7PCh. 25 - What is the function of RNA polymerase?Ch. 25 - What is the role of helicase in transcription?Ch. 25 - Prob. 10PCh. 25 - Prob. 11PCh. 25 - Prob. 12PCh. 25 - Prob. 13PCh. 25 - Prob. 14PCh. 25 - Prob. 15PCh. 25 - What are the different names used for the two...Ch. 25 - Prob. 17PCh. 25 - Prob. 18PCh. 25 - Prob. 19PCh. 25 - Prob. 20PCh. 25 - Where are the codons located?Ch. 25 - What are the two most important sites on tRNA...Ch. 25 - Prob. 23PCh. 25 - Prob. 24PCh. 25 - Prob. 25PCh. 25 - Prob. 26PCh. 25 - Prob. 27PCh. 25 - (a) If a codon is GCU, what is the anticodon? (b)...Ch. 25 - If a segment of DNA is 981 units long, how many...Ch. 25 - In what sense does the universality of the genetic...Ch. 25 - Prob. 31PCh. 25 - Prob. 32PCh. 25 - A genetic code in which two bases encode a single...Ch. 25 - What is meant by the genetic code being continuous...Ch. 25 - Prob. 35PCh. 25 - Prob. 36PCh. 25 - Prob. 37PCh. 25 - Prob. 38PCh. 25 - Prob. 39PCh. 25 - What are the stages of protein synthesis?Ch. 25 - Prob. 41PCh. 25 - Explain what happens to the fMet initially put at...Ch. 25 - Prob. 43PCh. 25 - Why is amino acid activation called the second...Ch. 25 - Prob. 45PCh. 25 - Prob. 46PCh. 25 - Prob. 47PCh. 25 - Prob. 48PCh. 25 - Prob. 49PCh. 25 - What kind of interactions exist between metal-...Ch. 25 - Prob. 51PCh. 25 - Prob. 52PCh. 25 - Prob. 53PCh. 25 - Prob. 54PCh. 25 - Prob. 55PCh. 25 - Prob. 56PCh. 25 - Prob. 57PCh. 25 - Prob. 58PCh. 25 - Prob. 59PCh. 25 - Prob. 60PCh. 25 - Prob. 61PCh. 25 - Prob. 62PCh. 25 - Prob. 63PCh. 25 - Prob. 64PCh. 25 - Prob. 65PCh. 25 - Prob. 66PCh. 25 - Prob. 67PCh. 25 - Prob. 68PCh. 25 - Prob. 69PCh. 25 - Prob. 70PCh. 25 - Prob. 71PCh. 25 - Prob. 72PCh. 25 - Prob. 73PCh. 25 - Prob. 74PCh. 25 - Prob. 75PCh. 25 - Prob. 76PCh. 25 - Prob. 77PCh. 25 - Prob. 78PCh. 25 - Prob. 79PCh. 25 - Prob. 80PCh. 25 - Prob. 81PCh. 25 - Prob. 82PCh. 25 - Prob. 83PCh. 25 - Prob. 84PCh. 25 - Prob. 85PCh. 25 - Prob. 86PCh. 25 - Prob. 87PCh. 25 - Prob. 88PCh. 25 - Prob. 89PCh. 25 - Prob. 90PCh. 25 - Prob. 91PCh. 25 - Prob. 92PCh. 25 - Prob. 93PCh. 25 - Prob. 94PCh. 25 - Prob. 95PCh. 25 - Prob. 96PCh. 25 - Is there any way to prevent a hereditary disease?...Ch. 25 - Prob. 98PCh. 25 - Prob. 99PCh. 25 - Prob. 100PCh. 25 - Glycine, alanine, and valine are classified as...Ch. 25 - Prob. 102PCh. 25 - Which polypeptide is coded for by the mRNA...Ch. 25 - -100 A new endonuclease is found. It cleaves...
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