Question

Enzyme trypsin is secreted by
A. Duodenum
B. Liver
C. Pancreas
D. Stomach

Answer 1

All living beings have chemical and metabolic reactions occurring within their bodies. These reactions include digestion of food, absorption of molecules, and production of energy. A biochemical reaction is a term used to refer to chemical reactions occurring within the body. Metabolism on the other hand is a combination of all biochemical reactions. Catabolism and anabolism (synthesis) are part of metabolism. Catabolism refers to the breakdown of substances, whereas anabolism refers to the formation of substances.

Step by step answer: The biochemical reactions occurring within the body are catalyzed by globular proteins called enzymes. They only act by catalyzing the chemical reaction and do not undergo any changes themselves. A particular reaction and substrate have a specific enzyme. The enzymes are named based on the reaction or compound they participate in. Enzymes are often termed as biocatalysts. For instance, the hydrolysis of maltose to glucose is catalyzed by the enzyme maltase.
${{C}_{12}}{{H}_{22}}{{O}_{11}}\xrightarrow{maltase}2{{C}_{6}}{{H}_{11}}{{O}_{6}}$
$Maltose\xrightarrow{maltase}Glu\cos e$
-The enzyme trypsin is essential for the digestion of proteins. Trypsin is also known as proteinase or proteolytic enzyme due to its ability to break down proteins in the small intestine. This enzyme is found in the small intestine and is secreted as an inactive form called trypsinogen by the pancreas. Trypsin can also be acquired from bacteria, fungus, and some plants.
-The stomach secretes electrolytes, water, hydrochloric acid, glycoproteins, and mucin that play a vital role in the digestion of food. The stomach is a J-shaped muscular organ that is situated in the upper left side of the abdomen. The stomach receives the food through the oesophagus. The food has already begun the digestion process in the mouth as discussed earlier by the action of salivary amylase.
-The liver secretes bile which is a unique secretion formed by the hepatocyte. Complex organic and inorganic solutes constitute about 5 percent of the bile secretions. The liver functions by synthesizing proteins, detoxifying metabolites, and producing enzymes necessary for the digestion of food.
-The duodenum is present in the first portion of the small intestine. Due to the accumulation of dietary lipids or fatty foods in the stomach or small intestine, there could be an obstruction in the forward movement of chyme. In response to this, the duodenal mucosa secretes enterogastrone hormones. The motility and gastric secretion in the stomach are inhibited by the enterogastrone by blocking the gastrin production or activity. This occurs because gastrin is responsible for gastric secretions in the stomach.
Therefore the correct answer is option C

Note: The digestive system of humans includes the gastrointestinal tract and other solid organs such as the pancreas, gallbladder, and liver that facilitate the digestion process. Secretin is a peptide hormone released to regulate secretions in the pancreas, liver, and stomach, in turn regulating the small intestine’s environment. They also partake in regulating the body’s water homeostasis. Cholecystokinin is also a peptide hormone that is synthesized and secreted by the enteroendocrine cells present in the duodenum of the small intestine. They are responsible for catalyzing the fat and protein digestion and are released with secretion.