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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

In the context of cellular biology, what is the purpose of the cap and tail added to mRNA during processing?

To convert mRNA into tRNA

To facilitate the replication of DNA

To initiate the process of transcription

To protect mRNA from degradation and assist in ribosome binding

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Verified step by step guidance

Understand that mRNA processing is a crucial step in gene expression where the initial mRNA transcript (pre-mRNA) is modified before it is translated into a protein.

Recognize that the 'cap' refers to a modified guanine nucleotide added to the 5' end of the mRNA. This cap is essential for protecting the mRNA from enzymatic degradation and is also involved in the initiation of translation by helping the ribosome recognize the mRNA.

Identify that the 'tail' refers to a poly-A tail, which is a long chain of adenine nucleotides added to the 3' end of the mRNA. This tail also helps protect the mRNA from degradation and aids in the export of the mRNA from the nucleus to the cytoplasm.

Acknowledge that the cap and tail do not convert mRNA into tRNA, facilitate DNA replication, or initiate transcription. Instead, they play a role in stabilizing the mRNA and facilitating its translation into protein.

Conclude that the primary purpose of adding a cap and tail to mRNA is to protect it from degradation and assist in ribosome binding, ensuring efficient and accurate protein synthesis.