15. Gene Expression

Introduction to Transcription

Transcription Made Easy- From DNA to RNA (2019)

The strand of DNA that has the same sequence as the RNA molecule being created during transcription is the:

BioFlix: Transcription

Transcription and Translation: From DNA to Protein

 No. The cell membrane does not store a cell's genetic material. 

 No. The rough ER does not store a cell's genetic material. 

 No. Transcription occurs within an organelle. 

Consider the location of the genetic material.

In a eukaryotic cell, transcription takes place __________.

Animation: Overview of Transcription

 No. Aminoacyl-tRNA synthetase is responsible for charging a tRNA with the appropriate amino acid. It is not involved in transcription. 

 No. Ribozymes are not involved in transcription. 

 No. Tyrosinase is an enzyme in the metabolic pathway that produces melanin, and it is absent in some forms of albinism. 

The names of enzymes often tell you about their function(s).

What catalyzes the linkage between ribonucleotides to form RNA during gene expression?

Transcription                   .
a. synthesizes new daughter DNA molecules from an existing DNA molecule;
b. results in the synthesis of an RNA copy of a gene;
c. pairs thymines (T) with adenines (A);
d. occurs on ribosomes

What does a bacterial RNA polymerase produce when it transcribes a protein-coding gene?
a. rRNA
b. tRNA
c. mRNA
d. snRNA

Overview of Transcription

Transcription and Translation

Transcription is the process that creates an RNA product from a sequence of DNA.

RNA polymerase builds RNA molecules from a DNA template.

A promoter is a sequence of DNA within a gene where RNA polymerase can begin transcription.

RNA polymerase, like DNA polymerase, requires a primer to begin RNA synthesis.

Which of the following statements is false?

Protein Synthesis (Updated)

DNA’s primary structure is made up of just four different bases, and its secondary structure is regular and highly stable. How can a molecule with these characteristics hold the information required to build and maintain a cell?

Transcription and Translation Overview

 the promoter region acts as an initial binding site for RNA polymerase 

 only one of the DNA strands is used as the template 

 No. This statement is true, but there is a better answer. 

 the RNA nucleotides used are produced by the cell 

Think through the steps in transcription.

In transcription, __________.

Animation: Overview of Transcription in Bacteria

Transcription and Translation - Protein Synthesis From DNA - Biology

 No. Protein is not the genetic material. 

 No. Carbohydrate is not the genetic material. 

Consider how cellular information is encoded.

Genetic information of eukaryotic cells is transferred from the nucleus to the cytoplasm in the form of __________.

The nucleotides in RNA contain ribose and cannot be an exact copy of DNA.

RNA molecules contain uracil instead of thymine and cannot be an exact copy of DNA.

The RNA transcript has a sequence complementary to the template.

The RNA transcript and the DNA template strand are antiparallel.

Transcription is sometimes described as a process in which RNA is "copied" from the template strand of DNA. This statement is potentially misleading since _____.

An RNA molecule transcribed from a sequence of DNA.

A stretch of DNA that can be transcribed.

A sequence of DNA where the process of transcription ends. 

A sequence of DNA that encodes a product like an RNA or a protein. 

A sequence of DNA where the process of transcription begins. 

Which of the following is the best definition of a gene?

During the process of transcription,                   .
a. DNA serves as a template for the synthesis of more DNA;
b. DNA serves as a template for the synthesis of RNA;
c. DNA serves as a template for the synthesis of proteins;
d. RNA serves as a template for the synthesis of proteins

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Hussain Biology

1. Introduction to Biology

2. Chemistry

3. Water

4. Biomolecules

5. Cell Components

6. The Membrane

7. Energy and Metabolism

8. Respiration

9. Photosynthesis

10. Cell Signaling

11. Cell Division

12. Meiosis

13. Mendelian Genetics

14. DNA Synthesis

16. Regulation of Expression

17. Viruses

18. Biotechnology

19. Genomics

20. Development

21. Evolution by Natural Selection

22. Evolution of Populations

23. Speciation

24. History of Life on Earth

25. Phylogeny

26. Prokaryotes

27. Protists

28. Plants

29. Fungi

30. Overview of Animals

31. Invertebrates

32. Vertebrates

33. Plant Anatomy