NEET · Biology doubts
247 doubts found
What does “Translation” actually mean in Molecular Basis of Inheritance, and why does it matter for NEET?
reading mRNA codons at the ribosome to build a protein.
What is the difference between homologous organs and analogous organs?
Homologous organs share structure and ancestry but differ in function (human arm vs whale flipper); analogous organs share function but not ancestry (bird wing vs insect wing).
What does “Antibiotics” actually mean in Human Health & Disease, and why does it matter for NEET?
medicines that kill or stop bacteria — they do not work against viruses.
What does “Placenta” actually mean in Human Reproduction & Reproductive Health, and why does it matter for NEET?
the structure connecting the embryo to the mother's uterus for nutrient, gas and waste exchange, and it also secretes hormones.
What does “Applications” actually mean in Biotechnology & its Applications, and why does it matter for NEET?
genetic engineering gives us human insulin, Bt crops, and gene therapy.
What does “Food chain vs food web” actually mean in Ecosystem & Ecology, and why does it matter for NEET?
real ecosystems are interlinked food webs rather than single isolated food chains.
I keep getting “Ribosomes” questions wrong in Cell: The Unit of Life. What's the trap?
listing ribosomes as membrane-bound organelles.
I keep getting “Carbohydrates” questions wrong in Biomolecules. What's the trap?
confusing starch (plant storage) with glycogen (animal storage).
I keep getting “Crossing over” questions wrong in Cell Cycle & Cell Division. What's the trap?
thinking crossing over happens in mitosis.
What is the difference between C3 plants and C4 plants?
C3 plants fix CO₂ directly via the Calvin cycle; C4 plants (like maize) first fix it into a 4-carbon acid, making them more efficient in heat.
I keep getting “ATP” questions wrong in Respiration in Plants. What's the trap?
thinking energy is stored long-term as ATP.
I keep getting “Peristalsis” questions wrong in Digestion & Absorption. What's the trap?
thinking gravity moves food through the gut.
I keep getting “Mechanism of breathing” questions wrong in Breathing & Exchange of Gases. What's the trap?
thinking the lungs themselves have muscles that pump air.
What is the difference between RBC and WBC?
Red blood cells carry oxygen (no nucleus in humans); white blood cells defend against infection (have a nucleus).
I keep getting “ADH regulation” questions wrong in Excretory Products & Elimination. What's the trap?
thinking urine concentration is fixed.
What is the difference between sensory neuron and motor neuron?
A sensory neuron carries signals from receptors to the CNS; a motor neuron carries commands from the CNS to muscles/glands.
I keep getting “Pituitary gland” questions wrong in Chemical Coordination (Endocrine System). What's the trap?
thinking each gland works fully independently.
I keep getting “Sex-linked inheritance” questions wrong in Principles of Inheritance & Variation. What's the trap?
thinking sex-linked traits affect both sexes equally.
I keep getting “Translation” questions wrong in Molecular Basis of Inheritance. What's the trap?
thinking each base codes for one amino acid.
What is the difference between natural selection and Lamarckism?
Natural selection acts on inherited variation over generations; Lamarckism (disproved) claimed traits acquired in life are passed on.
I keep getting “Antibiotics” questions wrong in Human Health & Disease. What's the trap?
taking antibiotics for a viral cold or flu.
I keep getting “Placenta” questions wrong in Human Reproduction & Reproductive Health. What's the trap?
thinking maternal and foetal blood mix directly.
I keep getting “Applications” questions wrong in Biotechnology & its Applications. What's the trap?
thinking genetically engineered insulin differs from human insulin.
I keep getting “Food chain vs food web” questions wrong in Ecosystem & Ecology. What's the trap?
assuming each organism eats only one type of food.