NEET doubts
500 doubts found
I keep getting “Energy flow” questions wrong in Ecosystem & Ecology. What's the trap?
thinking energy is recycled like nutrients.
What does “Prokaryotic cell” actually mean in Cell: The Unit of Life, and why does it matter for NEET?
a cell without a membrane-bound nucleus or organelles — like bacteria.
What does “Enzyme specificity” actually mean in Biomolecules, and why does it matter for NEET?
each enzyme acts on a specific substrate, like a lock fitting only its key.
What does “Mitosis” actually mean in Cell Cycle & Cell Division, and why does it matter for NEET?
division that produces two genetically identical diploid daughter cells for growth and repair.
What does “Calvin cycle (dark reaction)” actually mean in Photosynthesis in Higher Plants, and why does it matter for NEET?
occurs in the stroma, fixing CO₂ into sugar using the ATP and NADPH from the light reactions.
What does “Aerobic respiration” actually mean in Respiration in Plants, and why does it matter for NEET?
the oxygen-using stages (Krebs cycle and electron transport chain) in mitochondria that yield most ATP.
What does “Absorption” actually mean in Digestion & Absorption, and why does it matter for NEET?
digested nutrients are absorbed mainly in the small intestine, whose villi hugely increase surface area.
What does “Oxygen transport” actually mean in Breathing & Exchange of Gases, and why does it matter for NEET?
most oxygen is carried by haemoglobin in red blood cells as oxyhaemoglobin.
What does “Heart chambers” actually mean in Body Fluids & Circulation, and why does it matter for NEET?
four chambers — two atria and two ventricles — keep oxygenated (left) and deoxygenated (right) blood separate.
What does “Urine formation” actually mean in Excretory Products & Elimination, and why does it matter for NEET?
ultrafiltration in the glomerulus, then selective reabsorption and secretion in the tubules.
What does “Nerve impulse” actually mean in Neural Control & Coordination, and why does it matter for NEET?
an electrical signal (action potential) travels within a neuron; a chemical signal crosses the synapse.
What does “Insulin and glucagon” actually mean in Chemical Coordination (Endocrine System), and why does it matter for NEET?
pancreatic hormones — insulin lowers blood glucose, glucagon raises it.
What does “Monohybrid ratio” actually mean in Principles of Inheritance & Variation, and why does it matter for NEET?
a cross of one trait gives a 3:1 phenotype ratio in the F2 generation.
What does “Semi-conservative replication” actually mean in Molecular Basis of Inheritance, and why does it matter for NEET?
each new DNA molecule keeps one original strand and one newly made strand.
What does “Variation and adaptation” actually mean in Evolution, and why does it matter for NEET?
inherited differences among individuals provide the raw material selection acts on.
What does “Active vs passive immunity” actually mean in Human Health & Disease, and why does it matter for NEET?
active immunity is when the body makes its own antibodies; passive immunity is receiving ready-made ones.
What does “Menstrual cycle” actually mean in Human Reproduction & Reproductive Health, and why does it matter for NEET?
a ~28-day hormonal cycle in which ovulation occurs around day 14, driven by FSH, LH, estrogen and progesterone.
What does “Restriction enzymes” actually mean in Biotechnology & its Applications, and why does it matter for NEET?
molecular scissors that cut DNA only at specific palindromic recognition sequences.
What does “Ten percent law” actually mean in Ecosystem & Ecology, and why does it matter for NEET?
only about 10% of the energy at one trophic level passes to the next.
I keep getting “Prokaryotic cell” questions wrong in Cell: The Unit of Life. What's the trap?
thinking prokaryotes have no DNA at all.
I keep getting “Enzyme specificity” questions wrong in Biomolecules. What's the trap?
assuming one enzyme can catalyse many unrelated reactions.
I keep getting “Mitosis” questions wrong in Cell Cycle & Cell Division. What's the trap?
expecting variation from mitosis.
I keep getting “Calvin cycle (dark reaction)” questions wrong in Photosynthesis in Higher Plants. What's the trap?
thinking the 'dark reaction' happens only at night.
I keep getting “Aerobic respiration” questions wrong in Respiration in Plants. What's the trap?
thinking Krebs cycle occurs in the cytoplasm.