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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 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

Organization of DNA in the Cell

Anatomy & Physiology

3. Energy & Cell Processes

Organization of DNA in the Cell

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Multiple Choice

The structures labeled Y in the image below are called:

Centromeres.

Centrioles.

Sister chromatids.

Spindles.

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Verified step by step guidance

Examine the image provided. The structure labeled 'Y' is part of a chromosome, which appears to be in a duplicated form.

Understand the basic structure of a chromosome. A duplicated chromosome consists of two sister chromatids, which are identical copies of the chromosome connected by a centromere.

Identify the labeled structure 'Y'. In the image, 'Y' points to the region where the two chromatids are joined together.

Recall the definition of sister chromatids. Sister chromatids are the two identical halves of a duplicated chromosome, connected at the centromere.

Conclude that the structure labeled 'Y' in the image represents the sister chromatids, as they are the two identical parts of the chromosome connected at the centromere.