Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question
![**Understanding Cell Size and Oxygen Diffusion**
This image is a model that shows 3 different sized cells. The yellow area of each square is the part of the cell where oxygen is able to easily get to through the cell membrane.
![Image Description: Three squares of different sizes are shown, each with a black inner area representing the cell and a yellow border representing the area through which oxygen can diffuse.]
**Interpreting the Diagram:**
1. **Large Cell:**
- The largest square has the smallest yellow area relative to its total size. This indicates that as the cell size increases, the surface area (yellow part) available for oxygen diffusion does not increase proportionally.
2. **Medium Cell:**
- The medium-sized square shows a proportionally larger yellow area compared to the large cell, suggesting slightly better efficiency of oxygen diffusion.
3. **Small Cell:**
- The smallest square has the largest yellow area relative to its size. This illustrates that smaller cells have a higher surface area-to-volume ratio, allowing for more efficient oxygen diffusion through the cell membrane.
### Key Takeaways:
- Use specific information from this diagram to explain why even large organisms (like humans) are made out of many smaller cells. Large organisms consist of many small cells instead of fewer large cells to maximize the efficiency of oxygen diffusion and other essential exchanges with the environment.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1d08d88d-d5a3-43ff-b307-2bc10402d64b%2F39a2be14-41f8-4f82-a1a8-9ac5c377b2a9%2Fhoxbdjj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Understanding Cell Size and Oxygen Diffusion**
This image is a model that shows 3 different sized cells. The yellow area of each square is the part of the cell where oxygen is able to easily get to through the cell membrane.
![Image Description: Three squares of different sizes are shown, each with a black inner area representing the cell and a yellow border representing the area through which oxygen can diffuse.]
**Interpreting the Diagram:**
1. **Large Cell:**
- The largest square has the smallest yellow area relative to its total size. This indicates that as the cell size increases, the surface area (yellow part) available for oxygen diffusion does not increase proportionally.
2. **Medium Cell:**
- The medium-sized square shows a proportionally larger yellow area compared to the large cell, suggesting slightly better efficiency of oxygen diffusion.
3. **Small Cell:**
- The smallest square has the largest yellow area relative to its size. This illustrates that smaller cells have a higher surface area-to-volume ratio, allowing for more efficient oxygen diffusion through the cell membrane.
### Key Takeaways:
- Use specific information from this diagram to explain why even large organisms (like humans) are made out of many smaller cells. Large organisms consist of many small cells instead of fewer large cells to maximize the efficiency of oxygen diffusion and other essential exchanges with the environment.
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