Table of contents

1. Introduction to Anatomy & Physiology5h 42m
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 Heart2h 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

Genetic Code

Anatomy & Physiology

3. Energy & Cell Processes

Genetic Code

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Multiple Choice

Which statement is true?

Each DNA base codes for three amino acids.

Each gene codes for three proteins.

It takes three genes to code for one protein.

Each amino acid in a protein is coded for by three bases in the DNA.

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Verified step by step guidance

Understand the basic structure of DNA and its role in protein synthesis. DNA is composed of nucleotides, each containing a base (adenine, thymine, cytosine, or guanine).

Learn about the genetic code, which is the set of rules by which information encoded in DNA is translated into proteins. Each group of three DNA bases, called a codon, corresponds to a specific amino acid.

Recognize that during transcription, a segment of DNA is copied into mRNA, which then carries the genetic information to the ribosome for protein synthesis.

During translation, the ribosome reads the mRNA sequence in sets of three bases (codons) and uses tRNA molecules to add the corresponding amino acids to the growing polypeptide chain.

Conclude that the correct statement is: Each amino acid in a protein is coded for by three bases in the DNA, as each codon (three bases) specifies one amino acid.