MCQ on Phospholipids: Phospholipids are essential components of cell membranes. They consist of a hydrophilic head and two hydrophobic tails. Arranged in a bilayer, they create a selectively permeable barrier, regulating the flow of molecules in and out of cells, vital for cellular integrity and function. Learn more: MCQ on Membrane Lipids Biochemistry Notes | […]
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MCQ on Phloem Transport in Plants
MCQ on Phloem Transport in Plants: Phloem transport in plants occurs through a process called translocation. Sugars, mainly sucrose, produced in photosynthetic source tissues are actively loaded into the phloem. This creates a pressure gradient, causing sugars to flow through sieve tubes to sink tissues, where they are utilized or stored. Physiology Notes | Physiology […]
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MCQ on Importance of Hydrogen Bonds in Biology
MCQ on Significance of Hydrogen Bonds. Hydrogen bonds are crucial in various aspects of chemistry and biology. They stabilize protein and DNA structures, facilitating life’s essential processes. In water, they contribute to its unique properties. In molecules like DNA, they enable genetic information storage and transfer, underpinning life’s molecular machinery. Biochemistry Notes | Biochemistry PPTs […]
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MCQ on Cell Signalling in Plants
MCQ on Cell Signalling in Plants: In plants, cell signalling occurs through various mechanisms, including phytohormones like auxins, cytokinins, and gibberellins. These molecules regulate growth, development, and responses to environmental cues by binding to receptors and initiating intracellular pathways, ensuring coordinated physiological processes. Molecular Biology Notes | Molecular Biology PPTs | Molecular Biology MCQs <<< […]
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MCQ on Cellulose Biosynthesis in Plants
MCQ on Cellulose Synthesis in Plants: Cellulose is a carbohydrate (polysaccharide) composed of glucose molecules, serving as a structural component in plant cell walls. Cellulose biosynthesis in plants primarily occurs in the plasma membrane, where cellulose synthase enzymes (CESA) assemble glucose molecules into cellulose chains. These chains then form microfibrils, providing structural integrity to plant […]
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