CBSE Class Notes Online – Classnotes123
CBSE Class Notes, Worksheets, Question Answers, Diagrams , Definitions , Diffrence between , Maths Concepts, Science Facts Online – Classnotes123
This article delves into the immune system, emphasising its organs, such as white blood cells, the lymphatic system, bone marrow, skin, mucous membranes, appendix, and tonsils. It explains their roles in defending against pathogens through mechanisms like producing white blood cells, filtering blood, and creating physical barriers.
Key Organs of the Immune System -Explained in Details Read More
The article explores the characteristics, differences, and similarities between voluntary muscles (which we control consciously, like when walking or jumping) and involuntary muscles (which operate automatically, handling essential functions like heartbeats and digestion). It delves into their control mechanisms, appearances, fatigue levels, and their crucial roles in daily life and bodily functions, providing examples of each and highlighting their significance in movement, stability, and internal processes.
Voluntary and Involuntary muscles – Characteristics, Differences and Similarities Read More
Discover the Water Cycle: an essential guide covering all stages from evaporation to infiltration. Learn about hydrologic processes including precipitation and transpiration. This article breaks down complex concepts into simple steps, offering a clear understanding of the water cycle’s functions. Ideal for educational insights into Earth’s vital water journey.
The Water Cycle: The Steps and Hydrologic Processes from Evaporation to Infiltration Read More
The essentials of light refraction in our comprehensive guide. Understand why light bends through mediums like water and glass, explore the laws of refraction including Snell’s Law, and see real-world applications. Engaging and clear, this article demystifies refraction for high school students, enriching their grasp of this fundamental physics concept
Refraction of Light- A Comprehensive Guide for Students Read More
Certain transformations in matter are categorised as either physical or chemical changes. Physical changes involve alterations in a substance’s physical properties, like shape or state, without changing its composition. In contrast, chemical changes result in new substances forming with different compositions. These distinctions are essential in understanding diverse processes, from melting ice to rusting iron, shedding light on the nature of matter.
Differences between Physical and Chemical Changes Read MoreQuestion- What is the primary function of Endocytosis and Exocytosis? Answer- Endocytosis and Exocytosis are important processes for moving materials into and out of cells that are too large to …
FAQs on Endocytosis and Exocytosis Read MoreChloroplasts, found in plant cells, are defined as organelles that contain chlorophyll. They have a complex structure with outer and inner membranes, stroma, thylakoid membranes and grana. Functionally, chloroplasts play a key role in photosynthesis. They convert light energy into chemical energy, produce ATP and oxygen and fixing carbon dioxide. The diagrams illustrate the structure and functions of chloroplasts in plant metabolism.
Chloroplast – Definition, Structure, Distribution, function and Diagram Read More
Mitochondria, the ‘Powerhouse of the cell’, are double-membrane organelles found in eukaryotic organisms. They function as the cell’s digestive system and play an important role in energy production through oxidative phosphorylation. With their unique structure and multiple functions, mitochondria regulate metabolism, promote cell growth, detoxify ammonia, induce apoptosis and maintain calcium ion balance, making them essential for cellular activities.
Short Note on Mitochondria Read More
Endocytosis and Exocytosis are cellular processes used to move molecules in and out of cells, respectively. Endocytosis involves the formation of a vesicle to engulf and transport molecules into the cell, while exocytosis involves the fusion of a vesicle with the plasma membrane to release molecules out of the cell. These processes play important roles in nutrient uptake, waste elimination, cell communication etc.
Endocytosis and Exocytosis – Differences , Similarities ,Roles, Steps , Types Read MoreEndocytosis allows cells to take in external materials by forming vesicles that fuse with the cell membrane. This process is vital for nutrient uptake and immune function. There are three steps and three types of Endocytosis. Phagocytosis engulfs particles, while Pinocytosis takes up fluids and solutes. Receptor-Mediated Endocytosis uses specific receptors to target and internalise molecules.
What is Endocytosis – Class 9 Read More