#neet

3 questions

Match List I with List II :List I:A. RNA polymerase IIIB. Termination of transcriptionC. Splicing of ExonsD. TATA boxList II:I. snRNPsII. PromotorIII. Rho factorIV. SnRNAs, tRNAChoose the correct answer from the options given below : Answer: 1. A-IV, B-III, C-I, D-II RNA polymerase III transcribes snRNAs and tRNA (A-IV). Rho factor terminates transcription (B-III). Splici... Transcription, genetic code, translation, protein biosynthesis 1 answer
Choose the correct statement given below regarding juxta medullary nephron. Answer: 4. Loop of Henle of juxta medullary nephron runs deep into medulla. Juxtamedullary nephrons have long loops of Henle that run deep i... Excretion: modes, nephron, urine formation, osmoregulation 1 answer
Given below are two statements :Statement I : Mitochondria and chloroplasts are both double membrane bound organelles.Statement II : Inner membrane of mitochondria is relatively less permeable, as compared to chloroplast.In the light of the above sta… Answer: 4. Statement I is correct but Statement II is incorrect. Key idea: both organelles are bounded by two membranes, and in both the inn... Mitochondria, ribosomes, plastids, microbodies 1 answer
Regarding catalytic cycle of an enzyme action, select the correct sequential steps :A. Substrate enzyme complex formation.B. Free enzyme ready to bind with another substrate.C. Release of products.D. Chemical bonds of the substrate broken.E. Substrat… Answer: 2. E, A, D, C, B Key idea: catalytic cycle of an enzyme. Substrate binds to the active site (E) → enzyme-substrate complex forms (A)... Enzymes: types, properties, action, classification 1 answer
As per ABO blood grouping system, the blood group of father is B^+, mother is A^+ and child is O^+. Their respective genotype can beA. I^Bi / I^Ai / iiB. I^BI^B / I^AI^A / iiC. I^AI^B / iI^A / I^BiD. I^Ai / I^Bi / I^AiE. iI^B / iI^A / I^AI^BChoose th… Answer: 2. A only Key idea: a child with blood group O must be ii, getting one i allele from each parent. So both parents must carry i: fath... Deviations: incomplete dominance, co-dominance, multiple alleles, blood groups, pleiotropy, polygenic inheritance 1 answer
Which of the following is not a steroid hormone? Answer: 1. Glucagon Key idea: steroid hormones are made from cholesterol. Cortisol, testosterone and progesterone are steroids. Glucagon, fr... Endocrine glands and hormones, mechanism of action 1 answer
Match List I with List II :List I:A. PterophyllumB. MyxineC. PristisD. ExocoetusList II:I. Hag fishII. Saw fishIII. Angel fishIV. Flying fishChoose the correct answer from the options given below : Answer: 3. A-III, B-I, C-II, D-IV Pterophyllum - angel fish (A-III). Myxine - hag fish (B-I). Pristis - saw fish (C-II). Exocoetus - flying... Chordates up to classes 1 answer
Match List I with List II :List I:A. Fibrous jointsB. Cartilaginous jointsC. Hinge jointsD. Ball and socket jointsList II:I. Adjacent vertebrae, limited movementII. Humerus and Pectoral girdle, rotational movementIII. Skull, don't allow any movementI… Answer: 1. A-III, B-I, C-IV, D-II Fibrous joints (skull sutures) allow no movement (A-III). Cartilaginous joints between adjacent vertebrae... Skeletal system, joints and disorders 1 answer
Following are the stages of cell division :A. Gap 2 phaseB. CytokinesisC. Synthesis phaseD. KaryokinesisE. Gap 1 phaseChoose the correct sequence of stages from the options given below : Answer: 1. E-C-A-D-B Key idea: interphase comes first (G1, S, G2), then M phase (karyokinesis, then cytokinesis). G1 (E) → S (C) → G2 (A) →... Cell cycle, mitosis, meiosis 1 answer
The "Ti plasmid" of Agrobacterium tumefaciens stands for Answer: 4. Tumor inducing plasmid The Ti plasmid of Agrobacterium tumefaciens is the tumour-inducing plasmid. Part of it (T-DNA) enters plan... Tools: restriction enzymes, vectors, host 1 answer
Match List I with List II :List I:A. PonsB. HypothalamusC. MedullaD. CerebellumList II:I. Provides additional space for Neurons, regulates posture and balance.II. Controls respiration and gastric secretions.III. Connects different regions of the brai… Answer: 3. A-III, B-IV, C-II, D-I Pons - fibre tracts that connect different regions of the brain (A-III). Hypothalamus - contains neurosecr... Neural control: neuron, nervous system, nerve impulse 1 answer
Match List I with List II :List I:A. AxonemeB. Cartwheel patternC. CristaD. SatelliteList II:I. CentrioleII. Cilia and flagellaIII. ChromosomeIV. MitochondriaChoose the correct answer from the options given below : Answer: 1. A-II, B-I, C-IV, D-III Axoneme - the 9+2 microtubule core of cilia and flagella (A-II). Cartwheel pattern - the 9 triplet arrange... Cytoskeleton, cilia, flagella, centrioles; nucleus 1 answer
Consider the following statements :A. Annelids are true coelomatesB. Poriferans are pseudocoelomatesC. Aschelminthes are acoelomatesD. Platyhelminthes are pseudocoelomatesChoose the correct answer from the options given below : Answer: 3. A only Key idea: coelom type of each phylum. A: Annelids are true coelomates (metameric segmentation) - correct. B: Poriferans ar... Non-chordates up to phyla 1 answer
Given below are two statements :Statement I : In the nephron, the descending limb of loop of Henle is impermeable to water and permeable to electrolytes.Statement II : The proximal convoluted tubule is lined by simple columnar brush border epithelium… Answer: 3. Both Statement I and Statement II are false Statement I is false. The descending limb of Henle's loop is permeable to water and a... Excretion: modes, nephron, urine formation, osmoregulation 1 answer
Match List I with List II :List I:A. Common coldB. HaemozoinC. Widal testD. AllergyList II:I. PlasmodiumII. TyphoidIII. RhinovirusesIV. Dust mitesChoose the correct answer from the options given below : Answer: 4. A-III, B-I, C-II, D-IV Common cold - rhinoviruses (A-III). Haemozoin - toxic pigment released from RBCs in malaria, Plasmodium (B... Pathogens and parasites causing human diseases 1 answer
Match List I with List II :List I:A. Expiratory capacityB. Functional residual capacityC. Vital capacityD. Inspiratory capacityList II:I. Expiratory reserve volume + Tidal volume + Inspiratory reserve volumeII. Tidal volume + Expiratory reserve volum… Answer: 2. A-II, B-IV, C-I, D-III Key idea: capacities are sums of volumes. Expiratory capacity = TV + ERV (A-II). Functional residual capac... Breathing and respiration: mechanism, exchange and transport of gases, volumes, disorders 1 answer
Match List I with List II :List I (Sub Phases of Prophase I):A. DiakinesisB. PachyteneC. ZygoteneD. LeptoteneList II (Specific characters):I. Synaptonemal complex formationII. Completion of terminalisation of chiasmataIII. Chromosomes look like thin… Answer: 4. A-II, B-IV, C-I, D-III Key idea: order of prophase I: leptotene, zygotene, pachytene, diplotene, diakinesis. Diakinesis - termina... Cell cycle, mitosis, meiosis 1 answer
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :Assertion A : Breast-feeding during initial period of infant growth is recommended by doctors for bringing a healthy baby.Reason R : Colostrum cont… Answer: 2. Both A and R are correct and R is the correct explanation of A. Key idea: colostrum is the first milk, rich in antibodies (IgA).... Pregnancy, placenta, parturition, lactation 1 answer
Which one of the following factors will not affect the Hardy-Weinberg equilibrium? Answer: 1. Constant gene pool Key idea: Hardy-Weinberg equilibrium means allele frequencies stay constant from generation to generation. Fac... Gene flow, genetic drift, Hardy-Weinberg principle 1 answer
Match List I with List II :List I:A. TyphoidB. LeishmaniasisC. RingwormD. FilariasisList II:I. FungusII. NematodeIII. ProtozoaIV. BacteriaChoose the correct answer from the options given below : Answer: 3. A-IV, B-III, C-I, D-II Typhoid - bacterium Salmonella typhi (A-IV). Leishmaniasis - protozoan Leishmania (B-III). Ringworm - fung... Pathogens and parasites causing human diseases 1 answer
Given below are some stages of human evolution. Arrange them in correct sequence. (Past to Recent)A. Homo habilisB. Homo sapiensC. Homo neanderthalensisD. Homo erectusChoose the correct sequence of human evolution from the options given below : Answer: 1. A-D-C-B Key idea: order of appearance of the genus Homo. Homo habilis (about 2 mya) → Homo erectus (about 1.5 mya) → Homo neander... Human evolution 1 answer
The following diagram showing restriction sites in E.coli cloning vector pBR322. Find the role of 'X' and 'Y' genes : Answer: 3. The gene 'X' is responsible for controlling the copy number of the linked DNA and 'Y' for protein involved in the replication of... Tools: restriction enzymes, vectors, host 1 answer
Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli? Answer: 3. High pO₂ and Lesser H^+ concentration Key idea: oxygen binding is favoured in the alveoli. Alveoli have high pO₂, low pCO₂, lower... Breathing and respiration: mechanism, exchange and transport of gases, volumes, disorders 1 answer
In both sexes of cockroach, a pair of jointed filamentous structures called anal cerci are present on : Answer: 3. 10^th segment The cockroach abdomen has 10 segments. Anal cerci, a pair of jointed filamentous structures, are present on the 10t... Frog: morphology and anatomy 1 answer

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