Complete the sentence using the terms hydrophilic and hydrophobic: transmembrane proteins are found in the plasma membrane. regions are embedded within the membrane, and regions project from both surfaces of the bilayer.

When a human or animal consumes food, the carbon in that food is most likely to be converted into which of the following elements? a. carbon remains carbon b. nitrogen c. oxygen d. hydrogen

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?

The images show two species of tree frogs in a particular region. the gray tree frogs are adapted to the trees of the woodlands, while the green tree frogs can survive in woodlands or grasslands. the gray frog was abundant in the woodlands. because of climatic changes, most of the trees in the region died, and the woodlands changed to grasslands. in such a case, the . the gray tree frog is closely related to the green tree frog genetically, but they have different mating calls. this suggests that speciation occurred because of .