Fundamentals
The core facts every aspirant should own — each a titled nugget with a real-world story, the concept in plain words, and a memory trick. Works even when the internet doesn't.
300 fundamentals
“NEET often includes questions on Agrobacterium-mediated gene transfer and its applications in plant biotechnology.”
Explore the use of Agrobacterium tumefaciens and its Ti plasmid as natural gene transfer systems for plant transformation.
“NEET frequently covers insulin, glucagon, diabetes, and glucose homeostasis.”
Study the endocrine function of the pancreas, the roles of insulin and glucagon, and the regulation of blood glucose levels.
“You need to recognize clinical features and causes of common endocrine disorders for NEET.”
Identify diseases caused by hormone deficiency or excess, and the symptoms and physiological effects of these disorders.
“You may be asked about adrenal hormones, their effects, and their role in stress and metabolism.”
Understand the structure of the adrenal gland, differences between cortex and medulla, and the functions of their hormones.
“NEET frequently asks about evolutionary patterns and their classic examples.”
This concept covers the patterns of evolution including convergent and divergent evolution, adaptive radiation, and examples such as Darwin's finches and Australian marsupials.
“NEET tests your knowledge of disease diagnosis and public health measures.”
Learn about diagnostic tests (like the Widal test), prevention strategies, and eradication programs for major infectious diseases.
“Placental functions and hormones are frequently tested in NEET.”
Study the structure, functions, and hormone production of the placenta during pregnancy.
“You must know the types of fermentation, organisms involved, and differences between beverage types for NEET.”
Fermentation by microbes is used to produce alcoholic and non-alcoholic beverages, with different organisms and substrates involved.
“Three scientists across decades pieced together that life's common brick is the cell.”
All living things are made of cells, and every cell comes from a pre-existing cell.
Memory trick: Cells come only from cells.
“Bacteria are studio flats; your cells are mansions with many rooms.”
Prokaryotes (bacteria) lack a true nucleus and organelles; eukaryotes (plants, animals) have both.
Memory trick: Pro = 'before' the nucleus.
“These ancient guest-microbes now power almost every cell in your body.”
The powerhouse of the cell, where aerobic respiration makes most ATP; it has its own DNA.
Memory trick: Powerhouse of the cell.
“Green kitchens that cook sugar out of sunlight.”
The organelle where photosynthesis happens in plant cells.
Memory trick: Site of photosynthesis.
“The cell's 3-D printers, churning out proteins from genetic blueprints.”
A non-membrane structure that builds proteins.
Memory trick: Protein factory.
“A smart security gate deciding who gets in and out.”
A selectively permeable boundary (fluid-mosaic model) controlling what enters and leaves.
Memory trick: Selectively permeable.
“The cell's head office, storing the master instructions.”
The control centre holding the cell's DNA.
Memory trick: Holds DNA; runs the cell.
“Plants wear rigid armour (cell wall); animal cells stay flexible.”
Plant cells have a cell wall, chloroplasts and a large vacuole; animal cells don't (but have centrioles).
Memory trick: Wall + chloroplast = plant.
“They make reactions that would take years happen in a heartbeat.”
Biological catalysts that speed reactions by lowering activation energy and are reused.
Memory trick: Catalysts — not used up.
“One key, one lock — that precision keeps cell chemistry orderly.”
Each enzyme fits its specific substrate like a lock and key.
Memory trick: Active site = shape-specific.
“A fever that runs too hot can denature the very enzymes that keep you alive.”
Enzyme activity depends on temperature and pH, each with an optimum.
Memory trick: Too hot / wrong pH → denature.
“DNA is the master library; RNA is the working photocopy.”
DNA is double-stranded (deoxyribose, thymine) and stores genes; RNA is single-stranded (ribose, uracil) and expresses them.
Memory trick: DNA stores; RNA works.
“Most of a cell's life is spent quietly growing and copying, not dividing.”
Interphase (G1, S, G2) then M phase; DNA is copied in S phase.
Memory trick: DNA copies in S, before mitosis.
“Every time a wound heals, mitosis is rebuilding you cell by cell.”
Division making two genetically identical diploid cells for growth and repair.
Memory trick: Identical copies.
“Meiosis is why no two siblings (except identical twins) are the same.”
Reductional division making four genetically varied haploid gametes.
Memory trick: Halves chromosomes; shuffles genes.
“Genes get shuffled like cards, dealing each gamete a unique hand.”
Exchange of segments between homologous chromosomes in meiosis, creating variation.
Memory trick: Source of genetic variety.