Are you talking about the esophagus?
Dry and arid parts of the world with little to no rain.
A genotype is the genetic makeup if an organism. So let's say we have the freckles gene with freckles (F) being dominant and no freckles (f) being recessive. Let's also say Bob is heterozygous so his genotype for the freckles gene would be Ff. If he was homozygous dominant, he would have the genotype FF and if he was homozygous recessive, he would have the genotype ff.
Answer:
Facilitated transport proteins
Explanation:
Large molecules such as glucose or carbohydrates use proteins to help break down cell membranes. Some membrane proteins with chains of carbohydrates are attached to help cells become acquainted with certain molecules.
hope it helps!