Answer:
Convergent evolution
Explanation:
Convergent evolution is a type of evolution of similar features and/or structures between organisms that are not phylogenetically related. This type of evolution is known to create analogous structures/organs that exhibit similar or the same functions but were not present in the last common ancestor of these taxa. An example of analogous structures (and therefore also of convergent evolution) are the wings of bats and of insects (e.g., butterflies). Conversely, divergent evolution is a type of evolution where species phylogenetically related, i.e., species that share a common ancestor, evolve and accumulate differences over time.
Explanation:
- In mechanical digestion, the teeth grind food and break it in to smaller parts.
- Churning and the enzyme pepsin break down protein in the stomach.
- The pancreas releases the enzymes trypsin and chymotrypsin.
- Trypsin and chymotrypsin act on the proteins to break them down in the duodenum.
- Amino acids are absorbed by the capillaries in the jejunum.
- Amino acids enter the bloodstream and are circulated throughout the body.
Further Explanation:
Food is chemically and mechanically broken down into into smaller particles. This begins in the mouth, where food is mechanically crushed by the teeth, and mixed with saliva to allow water based enzymes like lingual lipase to work;- it's then transported to the stomach via the esophagus. Next in the stomach the enzyme gastric lipase acts on lipids, breaking them up into their components.
In the stomach, the enzyme pepsin breaks proteins, like those found in salmon, into smaller peptides by splitting the peptide bonds holding the proteins together. In the stomach, the enzyme pepsin breaks proteins, into smaller peptides by splitting the peptide bonds holding the proteins together.
The duodenum processes these newly-formed peptide chains or polypeptides, into smaller ones, through the enzyme action of elastase, trypsin and chymotrypsin; these are produced in the pancreas. Peptidases convert these fragments into amino acids for absorption into the bloodstream via the small intestines.
After digestion, the process of absorption occurs within villi of the small intestine; this occurs within the jejenum. Villi are small finger-like projections from epithelial cells of the small intestine; due to the projections, they have increased surface areas for absorption. Absorption involves several processes such as:
- endocytosis
- passive diffusion
- facilitated diffusion
- active transport
- secondary active transport (co transport)
The nutrients are then taken up into the bloodstream via capillaries, and circulated through the body
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The purpose of MHC molecules is to bind and display pathogen-derived peptide fragments on the cell surface so that the relevant T lymphocytes can recognise them.
<h3>What are MHC proteins, or major histocompatibility complex proteins?</h3>
MHC, or the major histocompatibility complex, is a set of genes that produce proteins located on the cell surfaces and that aid the immune system in identifying foreign objects. In all higher vertebrates, MHC proteins are present. The complex in humans is also known as the HLA (human leukocyte antigen) system.
<h3>What exactly are MHC proteins, and why are they crucial?</h3>
The major histocompatibility complex (MHC) is a collection of genes that code for cell surface proteins that play a significant part in the immune response. MHC molecules have a major role in how they display antigens.
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The ICD-10-PCS coding guidelines have need of that the coder to do both percutaneous endoscopic inspection and open resection of the gallbladder. In addition, laparoscopic cholecystectomy is a process in instance that the gallbladder is detached by the use of laparoscopic methods. The laparoscopic surgery also denoted to as slightly hostile surgery that defines the enactment of surgical techniques with the help of a video camera and several thin tools while a cholecystectomy may be essential if a person is experiencing aching from gallstones that block the movement of bile. A cholecystectomy is a common surgery and it brings only a small possibility of impediments.
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