Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

3. Energy & Cell Processes

Steps of Transcription

Anatomy & Physiology

3. Energy & Cell Processes

Steps of Transcription

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Multiple Choice

What happens during the initiation step of DNA transcription?

The mRNA detaches from the RNA polymerase as the RNA polymerase leaves the DNA strand.

RNA polymerase attaches to the DNA at the promoter sequence of the gene.

A ribosome attaches to the initiation codon of a completed mRNA strand.

RNA polymerase moves along the template strand of the DNA creating an mRNA strand.

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Verified step by step guidance

Understand that DNA transcription is the process of copying a segment of DNA into RNA, specifically mRNA, which will later be used in protein synthesis.

Identify the role of RNA polymerase, which is the enzyme responsible for reading the DNA template and synthesizing the mRNA strand.

Recognize that the initiation step of transcription begins when RNA polymerase binds to a specific region of the DNA called the promoter. The promoter is a sequence of DNA that signals the start of a gene.

Note that the binding of RNA polymerase to the promoter sequence is crucial as it positions the enzyme correctly to start transcribing the DNA into mRNA.

Remember that once RNA polymerase is bound to the promoter, it unwinds the DNA strands and begins synthesizing the mRNA by adding complementary RNA nucleotides to the growing mRNA strand.