THE CELL
TRANSPORT INTO AND OUT OF THE CELL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which of these are adaptations of exchange surfaces such as alveoli? (Choose 3)
|
|
Thick walls
|
|
|
Ability to maintain a high concentration gradient
|
|
|
Thin membrane
|
|
|
Large surface area
|
Explanation:
Detailed explanation-1: -Adaptations of the alveoli: Moist walls-gases dissolve in the moisture helping them to pass across the gas exchange surface. Permeable walls-allow gases to pass through. Extensive blood supply-ensuring oxygen rich blood is taken away from the lungs and carbon dioxide rich blood is taken to the lungs.
Detailed explanation-2: -The alveoli cover a surface of more than 1, 399 feet (ft) or 130 square meters (m2) . This large surface area is necessary to process the huge amounts of air involved in breathing and getting oxygen to your lungs.
There is 1 question to complete.