2.3 Why is a large surface area important for efficient gaseous exchange? (2)

2.4 Mention ONE other requirement of a surface area and explain why it is important for gas exchange. (3)

2.5 Which organism will not require a blood system for the transport of gases? Explain your answer. (3)

2.6 Provide the mechanism required to ensure that oxygen-laden air is brought in and carbon dioxide-laden air is driven out. (2)

(Total: 13 points)

Question

06-08-2024
Biology

Answered

2.3 Why is a large surface area important for efficient gaseous exchange? (2)

2.4 Mention ONE other requirement of a surface area and explain why it is important for gas exchange. (3)

2.5 Which organism will not require a blood system for the transport of gases? Explain your answer. (3)

2.6 Provide the mechanism required to ensure that oxygen-laden air is brought in and carbon dioxide-laden air is driven out. (2)

(Total: 13 points)

Answer :

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-08-06T15:43:11-04:00

Final answer:

Surface area is vital for efficient gaseous exchange, aiding in the movement of gases like oxygen and carbon dioxide. Smaller organisms benefit from a high surface area to volume ratio, while larger animals rely on specialized organs to enhance gas exchange processes. In organisms like single-celled ones, gas transport does not require a blood system due to direct diffusion into and out of cells.

Explanation:

Surface area plays a crucial role in efficient gaseous exchange as it allows for a larger area for molecules to diffuse across, facilitating the exchange of gases like oxygen and carbon dioxide. For instance, the lung has a large surface area due to the presence of numerous alveoli, enhancing gas diffusion.

Sufficient surface area to volume ratio is another critical requirement for gas exchange. Smaller organisms rely on a high surface area to volume ratio for effective diffusion, while larger animals require specialized organs to increase exchange surfaces.
Organisms such as single-celled organisms do not require a blood system for gas transport as gases can directly diffuse into and out of their cells due to their small size and high surface area to volume ratio.
The mechanism required to ensure proper gas exchange involves the process of diffusion. Oxygen is brought in by diffusion from regions of high concentration to low concentration, while carbon dioxide is driven out through the same mechanism.

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