EBK BIOLOGY
EBK BIOLOGY
10th Edition
ISBN: 8220100474729
Author: Martin
Publisher: Cengage Learning US
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 14, Problem 1TYU

The regulation of most bacterial genes occurs at the level of (a) transcription (b) translation (c) replication (d) posttranslation (e) postreplication

Expert Solution & Answer
Check Mark
Summary Introduction

Introduction: Genes are sets of nucleotides that codes for a particular protein. The genes have to be expressed for the synthesis of a protein. Gene regulation is a process where the expression of genes is controlled for the synthesis of specified gene products (usually RNA or proteins). This gene expression is regulated depending on the requirement of the cell. For example, cell division proteins are synthesized prior to the cell division. Prokaryotic and eukaryotic genes have differential gene expression in order to suit the specific needs of the cell.

Answer to Problem 1TYU

Correct answer: The regulation of most bacterial genes occurs at the level of transcription.

Hence, the correct answer is option (a).

Explanation of Solution

Reason for the correct answer:

Bacterial cells are prokaryotic cells and are unicellular. Therefore, they have limited components for all its essential functions. Another reason is that they have a very short life cycle, so fewer components are synthesized. Gene expression in bacteria occurs only when the environmental conditions are favorable such as the availability of food. In prokaryotic gene regulation, the half-life of mRNA is very less in order not to accumulate many mRNA and prevent unnecessary protein synthesis. In order to produce RNA and proteins at the time of requirement only and prevent unnecessary accumulation of molecules, bacteria have transcriptional-level control as part of gene regulation. Transcriptional-level control is found to be very efficient in bacteria as it helps to regulate the genes based on requirement, and favorable environmental conditions.

Option (a) is given as “transcription”.

Bacteria have transcriptional-level control as part of gene regulation.

Hence, the correct answer is option (a).

Reasons for incorrect answers:

Option (b) is given as, “translation”.

Translation is the process of formation of the protein inside the ribosomes. The bacterial genes regulate at the transcriptional-level, not at translational-level.

Hence, option (b) is incorrect.

Option (c) is given as, “replication”.

DNA replication is the process of the synthesis of the double strand by the action of the enzyme DNA polymerase. The bacterial genes regulate at the transcriptional-level, not during replication.

Hence, option (c) is incorrect.

Option (d) is given as, “posttranslation”.

The bacterial genes regulate at the transcriptional-level, not at posttranslational level.

Hence, option (d) is incorrect.

Option (e) is given as, “postreplication”.

The bacterial genes regulate at the transcriptional-level, not at postreplication level.

Hence, option (e) is incorrect.

Hence, the options (b), (c), (d), and (e) are incorrect.

Conclusion

Transcription is the process of the formation of the mRNA template from the DNA template. The bacterial genes regulate at the transcriptional-level.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
The metabolic pathway below is used for the production of the purine nucleotides adenosine monophosphate (AMP) and guanosine monophosphate (GMP) in eukaryotic cells. Assume each arrow represents a reaction catalyzed by a different enzyme. Using the principles of feedback inhibition, propose a regulatory scheme for this pathway that ensures an adequate supply of both AMP and GMP, and prevents the buildup of Intermediates A through G when supplies of both AMP and GMP are adequate.
QUESTION 27 Label the structures marked A, B, C and explain the role of structure A. W plasma membrane For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS ☐ Paragraph Π " ΩΘΗ Β Open Sans, a... 10pt EE
examples of synamptomorphy
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Text book image
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Text book image
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Text book image
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
genetic recombination strategies of bacteria CONJUGATION, TRANSDUCTION AND TRANSFORMATION; Author: Scientist Cindy;https://www.youtube.com/watch?v=_Va8FZJEl9A;License: Standard youtube license