Question

question 8
1 pts
which of the following is not a characteristic of a respiratory surface?
single layer of cells
large surface area
moist
all of these are characteristics of a respiratory surface

Explanation:

A respiratory surface needs to facilitate gas exchange. A single - layer of cells (thin) allows for easy diffusion of gases. A large surface area increases the amount of gas that can be exchanged. Moisture is necessary as gases dissolve in the moist layer before diffusing. So all the given options (single layer of cells, large surface area, moist) are characteristics of a respiratory surface.

Answer:

all of these are characteristics of a respiratory surface