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

29. Heredity

Factors Affecting Gene Expression

Anatomy & Physiology

29. Heredity

Factors Affecting Gene Expression

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Multiple Choice

According to the central dogma, what is the intermediate molecule involved in the flow of information in a cell that should go in the blank? DNA → ________ → Proteins

Ribosome.

rRNA.

mRNA.

tRNA.

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Verified step by step guidance

Understand the central dogma of molecular biology, which describes the flow of genetic information in a cell: DNA → RNA → Proteins. This process involves transcription and translation.

Identify the intermediate molecule that carries the genetic information from DNA to the ribosome for protein synthesis. This molecule is RNA, specifically messenger RNA (mRNA).

Recall that during transcription, the DNA sequence is used as a template to synthesize mRNA. This mRNA contains codons that correspond to specific amino acids.

Recognize that mRNA serves as the intermediary between DNA and proteins, as it is translated by ribosomes into a polypeptide chain during the process of translation.

Eliminate other options: Ribosome is the site of protein synthesis, rRNA is a structural component of ribosomes, and tRNA brings amino acids to the ribosome during translation. The correct intermediate molecule is mRNA.