Absorption and Assimilation of Fats - Notes for Class 11 Biology

We, at Takshila Learning always do best to keep our students ahead in terms of learning and preparation. We offer animated videos, recorded lectures with detailed explanation, and sample papers with solutions, objective and subjective study material, NCERT solutions for different classes. We have prepared an offline/online course which caters to all your needs to score good marks in CBSE exams. Our online study material is unique & content is regularly updated keeping in mind the latest pattern of question paper of Board exams.

Fats are insoluble in water : This inability to dissolve in water makes it difficult for fat digestion. Fats are hydrophobic in nature so, it tends to clump together and form large droplets as it moves through the digestive system. By the time fat reaches the small intestine, it has not been digested at all. So, dietary fat in the small intestine looks like a fairly large globule of fat.

These globules remain undigested until the bile, that is produced in the liver and stored in the gallbladder, mixes with the large fat droplets. Bile contains bile salts, which act as an emulsifier of lipids. The term ’emulsify’ means to break large fat droplets into smaller droplets. The bile salts break up the fat molecules and coat the fat to form much finer droplets. These finer droplets have more surface area, and this aids digestion because the fat-digesting enzyme pancreatic lipase can only act on the surface of the fat droplet. The enzymes of the small intestine are responsible for almost all of the fat digestion.

Epithelial Cells of the Small Intestine

Absorption takes place through the mucosal lining of the small intestine, and when these products pass through the mucosa, they enter the epithelial cells. Once inside the cells, the free fatty acids and monoglycerides enter the endoplasmic reticulum, which is a system inside the cell whose functions include synthesis and transport of lipids. Here, the digested products are resynthesized into triglycerides.

Triglycerides are the major form of fat stored by the body. So, an important fact to point out is that fats are reassembled in the epithelial cells of the small intestine. This makes fat absorption different than absorption of proteins and carbohydrates. With protein and carbohydrate absorption, we see their basic units, which are amino acids and monosaccharides, are able to pass through the intestinal epithelial cells without being altered.

Read full article click Absorption and Assimilation of Fats - Notes for Class 11 Biology

Visit our website www.takshilalearning.com for 11th science, CBSE / NCERT solutions for Class 11 Biology/Chemistry/Physics, online classes for Class 11

Lessons-Worksheets-Question Papers-CBSE Class 2 English

Lessons-Worksheets-Question Papers-CBSE Class 2 English CBSE 2nd Class English – One and Many In this blog, we share the spelling rules used in the concept of One and Many. When there is only one of a naming word (noun), it is said to be a singular noun . When a noun shows more than one, it is said to be in the plural . We can add –S, -es, -ves or ies to show that there is more than one noun. For example, we say many birds, four biscuits, six brushes. But for the students of Class 2 , it’s very difficult and confusing to understand where to use s , es, ves or ies in the form of many. Don’t worry, it looks difficult, but it is very easy as in grammar each concept has a set of rules that need to practice. Noun ending with –s, -x, -o, -sh, -ch, and –ss form plurals by taking –es. Look at these pairs of words: Bus – Buses Brush – Brushes Continue ..... Click here ...

Class 3 English Practice Grammar Worksheet -The Adverb

Class 3 English Practice Grammar Worksheet -The Adverb Class 3 English – The Adverb – Kinds of Adverb Fill in the blanks with suitable Adverbs of place. Choose from the box. Up outside everywhere back down away here there ...

Bhakti Movement NCERT Class 12 History

Bhakti Movement NCERT Class 12 History The Bhakti movement was an effort to achieve salvation and emancipation by devotion to God. In Hindi, the word bhakti refers to fervent devotion to God. This movement, which stressed a single-minded, ardent devotion to God, is seen as the most characteristic act of religious progress during the Middle Ages. In the 12th and 13th centuries, Kabir Das was a key figure in the Bhakti Movement. As a result of the movement, Kabir Das' poems and religious writings attained widespread fame. Kabir Das was raised up by a Muslim family. However, his religious beliefs were influenced by his Hindu teacher Ramananda, who regarded Rama as the highest God. The first Sikh guru and the founder of Sikhism was Guru Nanak. He vehemently opposed prejudice based on customs, rivalry, and caste in religion. Nanak was raised in a Hindu household and from an early age began to exhibit spiritual tendencies. He helped the indigent and underprivileged. His followers began r...

Takshila Learning - Online Tutorials

Search This Blog