Answer:the villi of the intestine
Explanation:like the cristae of the mitochondria which increase the surface area for the production of ATP,the villi of the intestine acts similarly.
In animals, digested food pass from the stomach to the intestine. In the intestine , enzymes acts on the food. Absorption of food takes place there and there are some structures that facilitates it. The walls of the intestine have numerous foldings , alongside the presence of finger like projection called villi. Microvilli are also presence from the cell walls of the intestine . These projections increase the surface area for the absorbing of food .they brush against food in the intestine and promotes absorption of nutrients.
An exoskeleton is the outer skeleton of an animal to protect them. An exoskelton is also called a shell.
3 is the correct answer. Let me know if you want me to explain why that is the answer.
yes
Explanation:
Since a female has two X chromosomes, she will have two copies of each X-linked gene.
