Answer:
B
Explanation:
nitrogenous bases on the two strands of DNA pair up, held together by weak hydrogen bonds.
1. Polymer refers to a lengthened, chain-like molecule comprising repeated units associated end to end.
2. Ceramic refers to a hard, brittle, corrosion and heat tolerant substance formed by administering a non-metallic mixture of minerals to intense heat.
3. Thermoset refers to the plastics, which exhibit low elongations and cannot get recycled again.
4. Thermoplastic refers to the plastics, which exhibit high elongations and can be recycled.
5. Crystal refers to the solid form originating from the organization of ions, atoms, or molecules in precise patterns of geometry.
6. Composite refers to a carbon fiber entrenched in a polymer resin matrix.
Answer:
The primary function of mucus in the stomach is <u>protect the stomach cells from gastric juices (e.g., HCl).</u>
Explanation:
The stomach is an important organ in the process of digestion, it performs a variety of functions that include the storage and exposure of food to the acid it secretes, in addition to providing a barrier that prevents the passage of microorganisms to the intestine. The gastric mucosa protects the stomach from digestion caused by acid gastric juices in which the superficial cells of the mucosa would produce a mucous layer, which would leave the stomach completely unprotected. The stomach creates gastric acids to break down food. These acids, also called gastric juices, are very strong acids found in the stomach. Its function is to promote the digestion of proteins that come from the products we eat. The components of gastric juices are produced by the gastric glands found in small cavities of the gastric mucosa. The gastric glands are elongated and consist of several types of cells: superficial cells, main cells and parietal cells. Superficial cells produce mucus that protects the stomach from attack by digestive acids and enzymes.
It is inherited from the mother's side.