The given question is incorrect. The correct question is as follows:
The muscularis externa propels materials from one portion of the digestive tract to the other by a series of wavelike contractions called peristalsis, while in most areas of the small intestine __________ movements churn and fragment digestive materials.
Answer:
Segmentation.
Explanation:
Digestion is the biological process that helps in the breakdown of the large food particles like carbohydrates, proteins into the small substances that are directly absorbed by the body for the production of energy.
The peristalsis movement occurs in the esophagus and other parts of the digestive system for the food propagation. The segmentation movement with the help of muscles also occurs especially in the small intestine for the proper mixing of the food and absorption by the body.
Thus, the correct answer is segmentation.
Answer:
The number of possible trees increases only linearly with the number of components one is comparing
One can use DNA, RNA and/or protein sequences.
It is possible to estimate which species are separated by less evolutionary distance.
Explanation:
The pylogenetic analysis is a process to estimate the evolutionary relationship. The sequence of a gene, DNA, RNA or protein can be used to assess the evolutionary relationship of species. Phylogenetic tree increases only linearly with the number of components. It is possible to estimate which species are separated in divergence time by less evolutionary relationship.
The correct anser is: atoms.
Atoms are the smallest units of matter with the properties of chemical element. Atoms are composed of:
1. a nucleus which is positively charged and composed of protons (p+) and neutrons (n0) and
2. one or more electrons (e-) which are negatively charged and suround the nucleus.
Simple passive diffusion occurs when small molecules pass through the lipid bilayer of a cell membrane. Facilitated diffusion depends on carrier proteins imbedded in the membrane to allow specific substances to pass through, that might not be able to diffuse through the cell membrane.
Answer: an educated guess
Explanation: