FAQ: The Enzyme Pepsin Is Concerned Primarily With The Digestion Of Which Of The Following?

How does pepsin break down protein?

In the case of pepsin, the pH of optimal activity is extremely acid, between 1 and 4. The specific reaction catalyzed by pepsin is the acid hydrolysis of the peptide bond. This reaction will break down proteins into smaller units to enable the digestive process.

What is the function of pepsin in the stomach quizlet?

Pepsin breaks down proteins that are found in foods such as meat and eggs into smaller pieces (polypeptides). It breaks down proteins only at certain points, so the protein is not digested completely to the amino acid level.

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Which portion of the alimentary canal mixes food with gastric juice and breaks it down into a mixture called chyme?

The stomach walls contain three layers of smooth muscle arranged in longitudinal, circular, and oblique (diagonal) rows. These muscles allow the stomach to squeeze and churn the food during mechanical digestion. Powerful hydrochloric acid in the stomach helps break down the bolus into a liquid called chyme.

What is the layer of tissue that forms the outermost covering of organs found in the digestive tract called?

The myenteric plexus is between the two muscle layers. Above the diaphragm, the outermost layer of the digestive tract is a connective tissue called adventitia. Below the diaphragm, it is called serosa.

What happens if pepsin does not work properly?

Pepsin denatures ingested protein and converts it into amino acids. Without pepsin, our body would be unable to digest proteins.

What would happen if pepsin was mutated?

If pepsin got mutated, then the stomach wouldn’t be able to properly digest the food. This would cause the person to have bloating, heartburn, and stomach pains.

What is the main function of pepsin in the stomach?

Pepsin is a stomach enzyme that serves to digest proteins found in ingested food. Gastric chief cells secrete pepsin as an inactive zymogen called pepsinogen. Parietal cells within the stomach lining secrete hydrochloric acid that lowers the pH of the stomach.

What is the main function of HCl in the stomach?

The main function of HCL is to provide the necessary H+ for the Activation of pepsinogen into pepsin. Approximately 2 liters of HCL is secreted daily into our stomach. It also serves the purpose of protection by killing some bacteria by the high acidic environment.

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Which of the following is the function of HCl in the stomach?

The hydrochloric acid in the gastric juice breaks down the food and the digestive enzymes split up the proteins. The acidic gastric juice also kills bacteria. The mucus covers the stomach wall with a protective coating.

What are the 14 parts of the digestive system?

The main organs that make up the digestive system (in order of their function) are the mouth, esophagus, stomach, small intestine, large intestine, rectum and anus. Helping them along the way are the pancreas, gall bladder and liver. Here’s how these organs work together in your digestive system.

What are the 2 types of digestion?

Digestion is a form of catabolism or breaking down of substances that involves two separate processes: mechanical digestion and chemical digestion. Mechanical digestion involves physically breaking down food substances into smaller particles to more efficiently undergo chemical digestion.

What is the function of Chyme?

Chyme, a thick semifluid mass of partially digested food and digestive secretions that is formed in the stomach and intestine during digestion. In the stomach, digestive juices are formed by the gastric glands; these secretions include the enzyme pepsin, which breaks down proteins, and hydrochloric acid.

What are the four layers of the digestive tract?

All segments of the GI tract are divided into four layers: the mucosa (epithelium, lamina propria, and muscular mucosae), the submucosa, the muscularis propria (inner circular muscle layer, intermuscular space, and outer longitudinal muscle layer), and the serosa (Figure 1).

What are the 4 tissues in the stomach?

Anatomy of the Stomach

  • Mucosa. This is the first and innermost layer or lining.
  • Submucosa. This second layer supports the mucosa.
  • Muscularis. The third layer is made of thick muscles.
  • Subserosa. This layer contains supporting tissues for the serosa.
  • Serosa. This is the last and outermost layer.
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What are the layers of the digestive tract quizlet?

Name the four layers of the digestive tract from superficial to deep. Mucosa (adjacent to the lumen), submucosa, muscularis externa and serosa.

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