Ch 16: TExES Life Science: DNA Transcription & Translation

About This Chapter

Take advantage of the video lessons and quizzes in our chapter on DNA transcription and translation, and you'll be good and ready for such questions on the TExES Life Science test. Our expert instructors are ready to help!

TExES Life Science: DNA Transcription & Translation - Chapter Summary

DNA transcription and translation is a foundational topic in genetics. You'll likely encounter questions about it on the TExES Life Science 7-12 test. Our corresponding chapter on the subject takes you through all the essentials of DNA transcription and translation. These videos are brief but thorough in their coverage of topics like:

  • The central dogma of protein synthesis
  • Messenger RNA (mRNA) transcription
  • Gene expression regulation
  • Prokaryotic operons vs eukaryotic splicing
  • The genetic code
  • Role of peptide bonds and ribosomes in translation
  • The steps and sites of mRNA translation

Our lessons are available both as videos and text transcripts. Lessons are created by instructors who are experts in all things science. A short quiz wraps up each lesson for your self-assessment. Use them to identify any weak links in your knowledge or boost your confidence in these areas.

TExES Life Science: DNA Transcription & Translation - Chapter Objectives

The State of Texas uses the TExES (Texas Examinations of Educator Standards) Life Science 7-12 test as part of the certification process for aspiring life science teachers. It is a computer-administered test of about 100 multiple-choice questions, subdivided into six domains. The third domain, on heredity and evolution, comprises about 20% of the test and is where you're most likely to find questions about DNA transcription and translation. This domain, among other objectives, could assess your ability to relate structure and function in terms of nucleic acids and their transcription, translation and regulation, as well as to compare and contrast organization and control of viral, prokaryotic and eukaryotic genomes.

Our chapter topics have been chosen to correlate as much as possible with the test objectives. We want you to arrive on test day feeling confident in your preparation!

8 Lessons in Chapter 16: TExES Life Science: DNA Transcription & Translation
Test your knowledge with a 30-question chapter practice test
Protein Synthesis in the Cell and the Central Dogma

1. Protein Synthesis in the Cell and the Central Dogma

Learn the story of the central dogma and how it relates to protein synthesis. We'll use a simple analogy to explore the roles of transcription and translation in building protein from the DNA code. In this lesson, we'll also introduce the concept of a gene.

Transcription of Messenger RNA (mRNA) from DNA

2. Transcription of Messenger RNA (mRNA) from DNA

In this lesson, you will gain a thorough understanding of how transcription works. We will investigate how DNA is transcribed into RNA with the help of a promoter and RNA polymerase. Learn the purpose of messenger RNA and explore the three phases of transcription.

Regulation of Gene Expression: Transcriptional Repression and Induction

3. Regulation of Gene Expression: Transcriptional Repression and Induction

Do our genes work the same way all the time? How do we regulate the expression of our genes? Explore the various ways organisms control gene transcription through repression and induction of operons.

How An Operon Controls Transcription in a Prokaryotic Cell

4. How An Operon Controls Transcription in a Prokaryotic Cell

Is gene regulation really as simple as flipping a switch? What are the parts of an operon, and how do they function to control gene transcription? We'll study the lac operon to answer these questions.

RNA Processing in a Eukaryotic Cell: Splicing of Introns & Exons

5. RNA Processing in a Eukaryotic Cell: Splicing of Introns & Exons

In this lesson, we'll explore the unique considerations for gene regulation in the eukaryotic cell. We'll walk through RNA splicing of introns and exons and the addition of the 5' cap and poly(A) tail.

Overview of the Genetic Code

6. Overview of the Genetic Code

Ever wonder how so much genetic material can exist in every cell? In this lesson, we take a look at how the genetic code works, specifically with how codons signal for amino acids.

The Role of Ribosomes and Peptide Bonds in Genetic Translation

7. The Role of Ribosomes and Peptide Bonds in Genetic Translation

Ribosomes play a major role in the process of genetic translation. In this lesson, learn about the structure of ribosomes and how peptide bonds help to create chains of amino acids.

Translation of mRNA to Protein: Initiation, Elongation & Termination Steps

8. Translation of mRNA to Protein: Initiation, Elongation & Termination Steps

Translation, the second part of the central dogma of molecular biology, describes how the genetic code is used to make amino acid chains. In this lesson, explore the mechanics involved in polypeptide synthesis. Learn the three major steps of translation as you watch tRNA, mRNA, and ribosomes go to work.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

Earning College Credit

Did you know… We have over 160 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Support