Answer:
A & B
Explanation:
Leucine and phenylalanine have hydrophobic side chains, which means that they can interact with valine in the pocket. All other aminoacids on the list have polar (two electrically charged) side chains and cannot form hydrophobic pockets.
Chyme is actually produced both in the stomach and the small and large intestines of the digestive tract. This thick semifluid mass or digestive juice is responsible for breaking down the food and making it easily passable into the intestinal walls. Chyme is also responsible in preventing the gastric juices of the stomach to attach its own and within the intestines it breaks down food into proteins, starches, and fibers.
-90.15......................... (dots for the 20 words thing)
The process is called Peer-Reviewing. In Peer-Reviewing, scientists/academic peers "peer review" the work of a scientist to check for accuracy or any false information that might reduce the legitimacy of their study or change "how realistic/real" their study is.
p.s. This is also common sense because scientists make up an entire scientific community who base their scientific studies on consistency and accuracy.
B) Physiological because C is relating to the inside of the organism, A is relating to the forming part of a building or another item and D is reacting to their physical surroundings, so the only other answer would have to be B because in physiological in animals and humans alike, they change something of their physical self's to attain to the environment around them.