Table of contents

1. Introduction to Anatomy & Physiology5h 40m
2. Cell Chemistry & Cell Components12h 37m
3. Energy & Cell Processes10h 7m
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 Blood1h 22m
18. The Heart1h 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 Balance Coming soon
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity Coming soon

2. Cell Chemistry & Cell Components

Endomembrane System: Digestive Organelles

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Endomembrane System: Digestive Organelles

1:57 minutes

Problem 8

Textbook Question

In which cell would you find the most lysosomes? a,. pancreatic cell that secretes digestive enzymes b. ovarian cell that produces estrogen (a steroid hormone) c. muscle cell in the thigh of a long-distance runner d. white blood cell that engulfs bacteria

Verified step by step guidance

Understand the function of lysosomes: Lysosomes are organelles that contain digestive enzymes and are involved in breaking down waste materials and cellular debris.

Consider the role of each cell type: Analyze the primary function of each cell type listed in the options.

Option a: Pancreatic cells secrete digestive enzymes, which are proteins, but they do not primarily rely on lysosomes for their function.

Option b: Ovarian cells produce steroid hormones, which involves the smooth endoplasmic reticulum more than lysosomes.

Option d: White blood cells, particularly phagocytes, engulf and digest bacteria, requiring a high number of lysosomes to break down the engulfed material.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Lysosomes

Lysosomes are membrane-bound organelles that contain digestive enzymes responsible for breaking down waste materials and cellular debris. They play a crucial role in cellular metabolism and the recycling of cellular components. Cells that are highly active in digestion or waste processing typically have a higher number of lysosomes.

Cell Function and Type

Different cell types have specialized functions that dictate their organelle composition. For instance, pancreatic cells are involved in producing digestive enzymes, which requires a significant number of lysosomes for processing and recycling these enzymes. Understanding the specific roles of various cell types helps in predicting their lysosomal content.

Immune Response

White blood cells, particularly phagocytes, are integral to the immune response, as they engulf and digest pathogens. This process necessitates a high concentration of lysosomes to break down the engulfed material. Therefore, white blood cells are often rich in lysosomes to support their function in defending the body against infections.