Biology teacher

 🌿 KINGDOM PLANTAE vs ANIMALIA 🐾 Comparison of Kingdom Plantae and Kingdom Animalia showing key biological differences for NEET revision.   - Dr.Sanjaykumar pawar KINGDOM PLANTAE  Kingdom Plantae includes all plant-like organisms that are eukaryotic (true nucleus present) and mostly contain chlorophyll , which helps them make food by photosynthesis. Because of chlorophyll, most plants are autotrophic (self-feeding) . Some plants are exceptions and show heterotrophic nutrition : Insectivorous plants (trap insects for nutrients) Example: , Parasitic plants (depend on other plants for food) Example: Plant cells have: A true nucleus (eukaryotic cell) Chloroplasts (for photosynthesis) A cell wall made mainly of cellulose (gives rigidity and protection) Plantae includes five major groups: Algae Bryophytes Pteridophytes Gymnosperms Angiosperms A very important concept in plants is alternation of generations , meaning: Plants have two life pha...

  Cell Membrane Structure and Transport Mechanisms | NEET Biology Notes Fluid Mosaic Model showing membrane structure, transport mechanisms, and cell wall components important for NEET Biology.  - Dr.Sanjaykumar Pawar  Cell Membrane (Fluid Mosaic Model) – Easy NEET Notes (Line by Line) 1. Fluid Mosaic Model (Singer and Nicolson, 1972) Original Line: "An improved model of the structure of cell membrane was proposed by Singer and Nicolson (1972) widely accepted as fluid mosaic model." Easy Note: In 1972 , Singer and Nicolson proposed the Fluid Mosaic Model . It is the most accepted model of cell membrane structure. It explains how lipids and proteins are arranged in the membrane. NEET Point: Fluid Mosaic Model = Singer and Nicolson (1972) Original Line: "According to this, the quasi-fluid nature of lipid enables lateral movement of proteins within the overall bilayer." Easy Note: Cell membrane is made mainly of a lipid bilayer . Lipids are not fi...

  Prokaryotic Cells Explained for NEET | Easy Biology Notes Labeled diagram of a prokaryotic cell showing nucleoid, plasmids, cell wall, and mesosome structure for NEET revision. - Dr.Sanjaykumar Pawar  1. Prokaryotes have a cell wall surrounding the cell membrane except in Mycoplasma. Most prokaryotic cells (bacteria) have a cell wall outside the plasma membrane. The cell wall gives shape and protection . Exception: does not have a cell wall. NEET Point: Mycoplasma is the smallest living cell and lacks a cell wall. 2. The semi-fluid matrix filling the cell is the cytoplasm. The inside of the cell contains a jelly-like substance called cytoplasm . It contains enzymes, nutrients, ribosomes, and other materials. Many metabolic activities occur here. 3. There is no well-defined nucleus. Prokaryotic cells do not have a true nucleus. Their genetic material is not enclosed inside a nuclear membrane. NEET Point: Prokaryotes have a nucleoid , not a true nucle...