Biology- One-Liners- for various competitive examinations
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The subject Biology plays an important role in various competitive examinations conducted by various organizations.
Biology One-Liners help a lot.
The subject plays an important role in various competitive examinations conducted by various organizations.
Biology bits help a lot.
1- Emulsification- It is the process of breaking up of large lipid (fat) droplets into small droplets. This process provides greater surface for enzyme action.
2-Bile-It has no digestive enzymes. It simply emulsifies fats. The reason for yellowish green colour of the bile is due to the presence of pigments biliverdin and bilirubin.
3-Pancreatic Juice contains six major categories of enzymes, that act in an alkaline medium.
The six category of enzymes are as follows.
1-Lipase – It is also called steapsin. It is fat-digesting enzym of the pancreatic juice that acts on emulsified fats to produce fatty acids and glycerol.
2-Amylase – It is an enzyme that has the power of catalysing the hydrolysis of starch into sugars. The enzyme is present in the saliva of humans and some other mammals. This enzyme completes conversion of starch into maltose.
3-Trypsinogen – It is a digestive enzyme produced by the pancreas. The enzyme is found in pancreatic juice, along with amylase, lipase, and chymotrypsinogen.
* It is a precursor of trypsin and activated by the enzyme enterokinase secreted by the lining of duodenum.
4-Chymotrypsin –It is a digestive enzyme that is secreted by the pancreas. The enzyme breaks down proteins in the small intestine. The enzyme also converts other proteins into peptides.
5-Nucleases – It is an enzyme that digest nucleic acids, i.e. DNA and RNA content of the food. They are extensively used in molecular cloning.
6-Carboxypeptidases – It is a protease enzyme that act on peptides to produce small peptides and amino acids. Carboxypeptidases function in wound healing, blood clotting, reproduction, and many other processes.
4-Assimilation- It is the final conversion of the absorbed nutrients into the living substance, i.e. their utilization by the cells.
5-Mouth, pharynx, oesophagus, stomach, small intestine, large intestine and anus are the part of the human alimentary canal.
6-Amino acids Amino are utilized in the synthesis of proteins for building up the body tissues and enzymes. They are the end products of protein digestion.
7-Salivary amylase(ptyalin) helps converting starch into maltose.
8-Lactase enzyme helps converting lactose into glucose and galactose.
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