Biology Class 11 Chapter 4 Notes

• Our comprehensive Biology Class 11 Chapter 4 Notes will ensure you're fully prepared for your exams.
• Important Multiple Choice Questions for MDCAT Preparation from the chapter no 4 The Cell class 11.
• Describe various movements involved in the transport of materials across the cell membrane.
• State various structural modifications in a cell involved in secretions.
• List the processes blocked by mitochondria failure in a cell.
• What will happen if a chromosome loses its centromere?
• How does autophagy help in converting a tadpole larva into an adult amphibians?
• Is there any similarity between bacterial and plant cell wall?
• Write down the salient features of Cell Theory?
• What is Fluid Mosaic Model of Cell Membrane?
• Difference between Diffusion and Osmosis.
• Differentiate between Power of Resolution and Magnification.
• Differentiate between Plant and Animal cell.
• Differentiate between Primary and Secondary cell wall.
• Differentiate between Prokaryotic and Eukaryotic cell.
• Is there any similarity between Bacterial and Plant Cell Wall?
• Write chemical composition of plasma membrane?
• Write briefly on differentially permeable membranes.
• What is cytosol?
• Differentiate between Gel and Sol.
• Differentiate between Unit Membrane and Fluid Mosaic Models.
• Write functions of cell wall?
• Write functions of Cytoplasm?
• Write functions of Endoplasmic Reticulum?
• Differentiate between Rough Endoplasmic Reticulum and Smooth Endoplasmic Reticulum.
• Define Polysomes.
• Differentiate between Ribosome and Polysomes.
• What is Golgi apparatus?
• Write functions of Golgi apparatus.
• Differentiate between Cisternae and Cristae.
• Differentiate between Endocytosis and Exocytosis?
• What is lysosomes? Give its function.
• Differentiate between Primary lysosome and Secondary lysosome.
• Difference between Phagocytosis and Pinocytosis.
• Differentiate between Autophagy and Autophagosome.
• What is autophagy? How it is beneficial for the cell?
• Define storage disease. Give at least two examples.
• Who first isolated peroxisomes? Briefly describe the structure of peroxisomes.
• Differentiate between Peroxisomes and Glyoxisome.
• Define vacuole. Also give its functions.
• Why mitochondria is called power house of the cell?
• Differentiate between Microtubules and Microfilaments.
• What is stroma and what is its function?
• Write down the role of centriole?
• Differentiate between Outer and Inner Membrane of Mitochondria.
• What is nucleolus?
• Define the terms Thylakoids and Grana.
• What is Plastids. Also differentiate between Chromoplast and Leucoplasts.
• Differentiate between Chromatin and Chromosome.
• How nuclear pores are formed? What is its function.
• difference between diffusion and osmosis. Diffusion Osmosis • It is the movement of solvent or water from the area of its higher concentrated region to its lower concentrated region through a semipermeable membrane. • It occurs only in liquid medium. • Diffusing molecules may be solids liquids or gases. • It involves the movement of solvent molecules only. • It does not require a semi-permeable membrane. • It requires a semi-permeable membrane. • It is purely dependent upon the free energy of diffusing substances only. • It depends upon the free energy (Chemical Potential) of the solvent present on the two sides of the semi-permeable membrane.  
• difference between primary cell wall and secondary cell wall. Primary Cell Wall Secondary Cell Wall  • It is composed of inorganic salts, silica, waxes cutin, lignin etc. • The cellulose molecules are low in content but arranged in a crisscross arrangement. • Cellulose molecules are high in content. • Primary wall is true cell wall. It develops in the newly growing cells. • The secondary wall is found between primary wall and cell membrane. • It is not much thick or rigid (a bit elastic). 
• What is cytosol? Ans: Cytosol: • Cytosol literally means cell solution in which the organelles reside. • It is the soluble part of cytoplasm. • It forms the ground substance of the cytoplasm. • Chemically it is composed of 90% water. • It forms a solution containing all fundamental molecules of life.