NEET UG

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Match List - I with List - II.List - I (Biological Molecules): (a) Glycogen (b) Globulin (c) Steroids (d) ThrombinList - II (Biological functions): (i) Hormone (ii) Biocatalyst (iii) Antibody (iv) Storage productChoose the correct answer from the opt… Answer: 1. (a) - (iv), (b) - (iii), (c) - (i), (d) - (ii) Key idea: Match molecule and function. (a) Glycogen: storage product, (iv). (b) Gl... Biomolecules: proteins, carbohydrates, lipids, nucleic acids 1 answer
Which of the following is a correct statement ? Answer: 2. Cyanobacteria are a group of autotrophic organisms classified under Kingdom Monera. Key idea: Cyanobacteria are autotrophic and b... Monera, Protista and Fungi 1 answer
Given below are two statements :Statement I :In a scrubber the exhaust from the thermal plant is passed through the electric wires to charge the dust particles.Statement II :Particulate matter (PM 2.5) can not be removed by scrubber but can be remove… Answer: 1. Statement I is incorrect but Statement II is correct Key idea: Electric charging of dust belongs to the electrostatic precipitato... Biodiversity: concept, patterns, importance, loss 1 answer
The recombination frequency between the genes a & c is 5%, b & c is 15%, b & d is 9%, a & b is 20%, c & d is 24% and a & d is 29%. What will be the sequence of these genes on a linear chromosome ? Answer: 1. a, c, b, d Key idea: Higher recombination frequency means a greater distance between genes. The farthest pair sits at the ends. T... Chromosome theory, linkage and crossing over 1 answer
Ten E.coli cells with ^15N - dsDNA are incubated in medium containing ^14N nucleotide. After 60 minutes, how many E.coli cells will have DNA totally free from ^15N ? Answer: 4. 60 cells Key idea: DNA replication is semi-conservative, and the question assumes the usual E. coli doubling time of 20 minutes.... DNA replication and central dogma 1 answer
If a colour blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness ? Answer: 1. 100% Key idea: Colour blindness is X-linked recessive. The female is colour blind: X^cX^c . The man's mother was colour blind, so... Sex-linked inheritance, Mendelian and chromosomal disorders 1 answer
Statements related to human Insulin are given below. Which statement(s) is/are correct about genetically engineered Insulin ?(a) Pro-hormone insulin contain extra stretch of C-peptide(b) A-peptide and B-peptide chains of insulin were produced separat… Answer: 3. (b) only Key idea: The question is about genetically engineered insulin. (b) Correct: A and B chains were made separately in E. c... Applications in health: human insulin, vaccines, gene therapy 1 answer
Which of the following is not a desirable feature of a cloning vector ? Answer: 1. Presence of two or more recognition sites Key idea: A good cloning vector should have a single recognition site for the restricti... Tools: restriction enzymes, vectors, host 1 answer
Which of the following statements is not true ? Answer: 1. Flippers of penguins and dolphins are a pair of homologous organs Key idea: Homologous organs share origin; analogous organs shar... Evidences of evolution 1 answer
Which one of the following statements is correct ? Answer: 4. Blood moves freely from atrium to the ventricle during joint diastole. Key idea: During joint diastole, both atria and ventricles... Circulation: heart, cardiac cycle, ECG, double circulation, regulation, disorders 1 answer
Which of the following are not the effects of Parathyroid hormone ?(a) Stimulates the process of bone resorption(b) Decreases Ca^2+ level in blood(c) Reabsorption of Ca^2+ by renal tubules(d) Decreases the absorption of Ca^2+ from digested food(e) In… Answer: 3. (b), (d) and (e) only Key idea: PTH raises blood mathrmCa²⁺ . (a) Stimulates bone resorption: true effect. (b) Decreases blood ma... Endocrine glands and hormones, mechanism of action 1 answer
Select the incorrect statement regarding synapses : Answer: 1. Impulse transmission across a chemical synapse is always faster than that across an electrical synapse. Key idea: Electrical syna... Neural control: neuron, nervous system, nerve impulse 1 answer
Match List - I with List - II with respect to methods of Contraception and their respective actions.List - I: (a) Diaphragms (b) Contraceptive Pills (c) Intra Uterine Devices (d) Lactational AmenorrheaList - II: (i) Inhibit ovulation and Implantation… Answer: 3. (a) - (iv), (b) - (i), (c) - (ii), (d) - (iii) Key idea: Match each method to its action. (a) Diaphragms cover the cervix and blo... Birth control, contraception and MTP 1 answer
Match List - I with List - II.List - I: (a) Bronchioles (b) Goblet cell (c) Tendons (d) Adipose TissueList - II: (i) Dense Regular Connective Tissue (ii) Loose Connective Tissue (iii) Glandular Tissue (iv) Ciliated EpitheliumChoose the correct answer… Answer: 2. (a) - (iv), (b) - (iii), (c) - (i), (d) - (ii) Key idea: Match each structure with its tissue. (a) Bronchioles: ciliated epitheli... Animal tissues: epithelial, connective, muscular, neural 1 answer
Breeding crops with higher levels of vitamins and minerals or higher proteins and healthier fats is called : Answer: 4. Bio-fortification Key idea: Breeding crops for higher vitamins, minerals, proteins and healthier fats is called biofortification.... Biocontrol agents and biofertilizers 1 answer
Identify the microorganism which is responsible for the production of an immunosuppressive molecule cyclosporin A : Answer: 2. Trichoderma polysporum Key idea: Cyclosporin A, an immunosuppressant used in organ transplants, is produced by the fungus Trichod... Microbes in industrial production 1 answer
A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is C_6H_12O_6 then what is the formula for maltose ? Answer: 4. C₁₂H₂₂O₁₁ Key idea: A dehydration reaction removes one water molecule when two units join. 2 glucose = mathrmC₁₂H₂₄O₁₂ . Subtract... Biomolecules: proteins, carbohydrates, lipids, nucleic acids 1 answer
Select the incorrect statement with reference to mitosis : Answer: 3. Spindle fibres attach to centromere of chromosomes. Key idea: Spindle fibres attach to the kinetochores, which are protein discs... Cell cycle, mitosis, meiosis 1 answer
Given below are two statements :Statement I :Mycoplasma can pass through less than 1 micron filter size.Statement II :Mycoplasma are bacteria with cell wallIn the light of the above statements, choose the most appropriate answer from the options give… Answer: 4. Statement I is correct but Statement II is incorrect Key idea: Mycoplasma are the smallest bacteria and have no cell wall. Statem... Monera, Protista and Fungi 1 answer
In the taxonomic categories which hierarchial arrangement in ascending order is correct in case of animals ? Answer: 2. Kingdom, Phylum, Class, Order, Family, Genus, Species Key idea: The standard hierarchy is Kingdom, Phylum, Class, Order, Family,... Taxonomy and systematics, species, taxonomic hierarchy, binomial nomenclature 1 answer
In-situ conservation refers to : Answer: 2. Protect and conserve the whole ecosystem Key idea: In-situ conservation protects species in their natural habitat, so the whole e... Biodiversity conservation: hotspots, Red Data Book, biosphere reserves, national parks, sacred groves 1 answer
If '8' Drosophila in a laboratory population of '80' died during a week, the death rate in the population is ______ individuals per Drosophila per week. Answer: 2. 0.1 Key idea: Death rate per individual = deaths ÷ population size. death rate = 8/80 = 0.1 individuals per Drosophila per week. Population attributes: growth, birth and death rate, age distribution 1 answer
Detritivores breakdown detritus into smaller particles. This process is called : Answer: 3. Fragmentation Key idea: Detritivores such as earthworms break detritus into smaller particles. This step is fragmentation. It is... Productivity and decomposition 1 answer
If the length of a DNA molecule is 1.1 metres, what will be the approximate number of base pairs ? Answer: 2. 3.3×10⁹ bp Key idea: Distance between two base pairs is 0.34\ nm = 0.34×10⁻⁹ m. N = dfrac1.10.34×10⁻⁹ ≈ 3.2×10⁹ ≈ 3.3×10⁹ bp, whi... DNA as genetic material, DNA and RNA structure, DNA packaging 1 answer

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