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

2. Cell Chemistry & Cell Components

Microscopes

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Microscopes

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Multiple Choice

What type of microscope would a researcher use to measure the size of a ribosome inside a eukaryotic cell?

A magnifying glass.

Standard light microscope.

Transmission electron microscope.

Scanning electron microscope.

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Verified step by step guidance

Understand the size of a ribosome: Ribosomes are very small organelles, typically around 20-30 nanometers in diameter, which are not visible with standard light microscopes.

Consider the limitations of a magnifying glass: A magnifying glass can only magnify objects to a limited extent and is not suitable for viewing structures at the nanometer scale.

Evaluate the capabilities of a standard light microscope: Light microscopes can typically resolve structures down to about 200 nanometers, which is insufficient for observing ribosomes.

Learn about the transmission electron microscope (TEM): TEMs use a beam of electrons to achieve much higher resolution, allowing researchers to view structures as small as ribosomes within cells.

Differentiate between TEM and scanning electron microscope (SEM): While SEMs are used for surface imaging, TEMs are specifically designed for viewing internal structures, making them ideal for measuring ribosome size inside cells.