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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 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

2. Cell Chemistry & Cell Components

Introduction to Eukaryotic Organelles

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Introduction to Eukaryotic Organelles

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Multiple Choice

Which of the following is true regarding the make-up of the ribosome?

Ribosomes are surrounded by a lipid bilayer membrane.

Ribosomes contain DNA as part of their structure.

Ribosomes are composed of RNA and proteins.

Ribosomes are only found in the nucleus of eukaryotic cells.

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Understand the basic structure of ribosomes: Ribosomes are complex molecular machines found within all living cells that perform biological protein synthesis (translation).

Recognize that ribosomes are not surrounded by a lipid bilayer membrane. Unlike organelles such as the nucleus or mitochondria, ribosomes are not membrane-bound.

Identify the components of ribosomes: Ribosomes are composed of ribosomal RNA (rRNA) and proteins. This combination allows them to function in protein synthesis.

Clarify that ribosomes do not contain DNA. DNA is found in the nucleus (in eukaryotic cells) and in the nucleoid region (in prokaryotic cells), but not in ribosomes.

Note the location of ribosomes: In eukaryotic cells, ribosomes can be found in the cytoplasm or attached to the endoplasmic reticulum, but they are not confined to the nucleus.