NEET Prep

NEET 2022

156 questions from the 2022 paper. A sample is shown below with full explanations.

Molecular Basis of Inheritance 7Principles of Inheritance and Variation 6Biotechnology — Principles and Processes 5Biomolecules (Biology) 4Cell Cycle and Cell Division 4Current Electricity 4Electromagnetic Induction and AC 4Electrostatics 4Optics 4p-Block Elements 4Structural Organisation in Animals 4Aldehydes 3Atoms and Nuclei 3Biodiversity and Conservation 3Biological Classification 3Biotechnology and its Applications 3Ecosystem 3Human Reproduction 3Kinematics 3Magnetic Effects of Current and Magnetism 3Morphology of Flowering Plants 3Organisms and Populations 3Photosynthesis in Higher Plants 3Plant Growth and Development 3Plant Kingdom 3Units and Measurements 3Alcohols 2Anatomy of Flowering Plants 2Animal Kingdom 2Body Fluids and Circulation 2Breathing and Exchange of Gases 2Cell — The Unit of Life 2Chemical Bonding and Molecular Structure 2Coordination Compounds 2Electrochemistry 2Equilibrium 2Evolution 2Gravitation 2Human Health and Disease 2Locomotion and Movement 2Properties of Bulk Matter 2Reproductive Health 2Respiration in Plants 2System of Particles and Rotational Motion 2Sexual Reproduction in Flowering Plants 2Structure of Atom 2Work 2Amines 1Some Basic Concepts of Chemistry 1Biomolecules (Chemistry) 1Chemical Coordination and Integration 1Chemical Kinetics 1d- and f-Block Elements 1Electromagnetic Waves 1Electronic Devices 1Excretory Products and their Elimination 1Haloalkanes and Haloarenes 1Hydrocarbons 1Kinetic Theory of Gases 1Laws of Motion 1Microbes in Human Welfare 1Neural Control and Coordination 1Oscillations and Waves 1Classification of Elements and Periodicity 1Redox Reactions 1Solutions 1
Human Reproduction2022hard

Q1.Which of the following statements are true for spermatogenesis but do not hold true for oogenesis? Choose the most appropriate answer from the options given below.

  • a. It results in the formation of haploid gametes
  • b. Differentiation of gamete occurs after the completion of meiosis
  • c. Meiosis occurs continuously in a mitotically dividing stem cell population
  • d. It is controlled by the Luteinising hormone (LH) and Follicle Stimulating Hormone (FSH) secreted by the anterior pituitary
  • e. It is initiated at puberty
  • Ab, c and e onlyAnswer
  • Bc and e only
  • Cb and c only
  • Db, d and e only

Explanation

Statements a and d are true of both processes, so they cannot discriminate. The three that separate them are b, because spermiogenesis shapes the sperm only after meiosis is complete whereas the ovum differentiates before meiosis finishes; c, because spermatogonia keep dividing mitotically throughout life while the female germ cell population is fixed before birth; and e, because spermatogenesis begins at puberty while oogenesis begins in the embryo.

Source: NEET 2022 (17 July), Code R2, Q151

Cell Cycle and Cell Division2022medium

Q2.Select the incorrect statement with reference to mitosis.

  • ASplitting of centromere occurs at anaphase
  • BAll the chromosomes lie at the equator at metaphase
  • CSpindle fibres attach to the centromere of chromosomesAnswer
  • DChromosomes decondense at telophase

Explanation

Spindle fibres do not attach to the centromere itself; they attach to the kinetochore, a disc-shaped protein structure assembled on the surface of the centromere. The distinction matters because the centromere is a DNA sequence and the kinetochore is the protein platform built on it. The other three statements are correct.

Source: NEET 2022 (17 July), Code R2, Q152

Human Health and Disease2022easy

Q3.Given below are two statements. In the light of the above statements, choose the most appropriate answer from the options given below.

  • Statement I: Autoimmune disorder is a condition where the body defence mechanism recognizes its own cells as foreign bodies.
  • Statement II: Rheumatoid arthritis is a condition where the body does not attack self cells.
  • AStatement I is incorrect but Statement II is correct
  • BBoth Statement I and Statement II are correct
  • CBoth Statement I and Statement II are incorrect
  • DStatement I is correct but Statement II is incorrectAnswer

Explanation

Statement I is the correct definition of autoimmunity. Statement II is the exact opposite of the truth: rheumatoid arthritis is the standard NCERT example of an autoimmune disease, in which the immune system does attack the body's own joint tissue.

Source: NEET 2022 (17 July), Code R2, Q154

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Questions are reformatted from NEET previous year papers with original explanations and topic tagging. NEET Prep is not affiliated with the NEET examining body.