Where do the lipids and proteins constituting the cell membrane get synthesised

NCERT Solutions for Class 9 Science Chapter 5 The Fundamental Unit Of Life NCERT Solutions Class 9 Science Chapter 5 – CBSE Download Free PDF Students can learn everything they need to know about the cell with NCERT Solutions for Class 9 Science Chapter 5 The Fundamental Unit of Life. These solutions are carefully crafted by highly qualified teachers who are experts in their respective fields. Furthermore, we ensure that appropriate content on Additionally, we ensure that the NCERT Solutions Class 9 we provide are tailored to meet multiple criteria for the purpose of awarding marks. This ensures that the answers are relevant and retain their informational quotient. Access this chapter’s Previous Next  Access answers to NCERT Class 9 Science Chapter 5 – The Fundamental Unit of Life (All in-text and exercise questions solved) Exercise-5.1 Page: 59 1. Who discovered cells, and how? Solution: In 1665, Robert Hooke discovered cells while examining a thin slice of cork through a self-designed microscope. He observed that the cork resembled the structure of a honeycomb consisting of numerous tiny compartments. The minuscule boxes are referred to as cells. 2. Why is the cell called the structural and functional unit of life? Solution: Cells form the structure of an entity. A group of cells form a tissue, further an organ and ultimately an organ system. They perform fundamental functions and life processes such as respiration, digestion, excretion etc., in both unicellular ...

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Cell membrane synthesis: • The cell membrane is made up of bilayer of phospholipid (a kind of lipid) and proteins embedded in it. • The synthesis of proteins and lipids takes place in the endoplasmic reticulum. • It is of two types- smooth endoplasmic reticulum (SER) and rough endoplasmic reticulum (RER). • The lipid synthesis occurs in the smooth endoplasmic reticulum (SER). • Rough endoplasmic reticulum (RER) has ribosomes attached to its membrane. • Ribosomes are the factory of all protein being synthesised in the cell. • Therefore, membrane proteins are also synthesised by rough endoplasmic reticulum (RER). Final answer: The lipids and proteins constituting the cell membrane gets synthesised in smooth endoplasmic reticulum (SER) and rough endoplasmic reticulum (RER) , respectively.

Membrane biogenesis. Sol: Membrane biogenesis is the process which involves the synthesis of cell membrane with the help of proteinsand lipids. Endoplasmic reticulum is responsible for the synthesis of thesemembranes. Lipids and proteinsconstituting the cell membrane are synthesized in the endoplasmic reticulum. SER (Smooth endoplasmic reticulum) helps in the manufacturing of lipids. RER (Rough endoplasmic reticulum) has particles attached to its surface, called ribosomes.