NEET UG

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Presence of which of the following conditions in urine are indicative of Diabetes Mellitus ? Answer: 3. Ketonuria and Glycosuria Diabetes mellitus shows glycosuria (glucose in urine) and ketonuria (ketone bodies in urine). Because in... Hormonal disorders 1 answer
Match the following columns and select the correct option.Column - I | Column - II(a) Organ of Corti | (i) Connects middle ear and pharynx(b) Cochlea | (ii) Coiled part of the labyrinth(c) Eustachian tube | (iii) Attached to the oval window(d) Stapes… Answer: 3. (a) (iv), (b) (ii), (c) (i), (d) (iii) Organ of Corti sits on the basilar membrane: (a) - (iv). Cochlea is the coiled part of the... Neural control: neuron, nervous system, nerve impulse 1 answer
Which of the following would help in prevention of diuresis ? Answer: 2. Reabsorption of Na ^+ and water from renal tubules due to aldosterone Diuresis is increased urine output. It is prevented when mo... Regulation of kidney function, disorders, dialysis 1 answer
Match the following columns and select the correct option.Column - I | Column - II(a) Placenta | (i) Androgens(b) Zona pellucida | (ii) Human Chorionic Gonadotropin (hCG)(c) Bulbo-urethral glands | (iii) Layer of the ovum(d) Leydig cells | (iv) Lubri… Answer: 4. (a) (ii), (b) (iii), (c) (iv), (d) (i) Placenta secretes hCG: (a) - (ii). Zona pellucida is a layer of the ovum: (b) - (iii). Bul... Male and female reproductive systems 1 answer
Which of the following hormone levels will cause release of ovum (ovulation) from the graffian follicle ? Answer: 1. High concentration of Estrogen Ovulation is triggered by the LH surge in mid-cycle, and that surge is itself caused by a high lev... Menstrual cycle 1 answer
Select the option including all sexually transmitted diseases. Answer: 1. Gonorrhoea, Syphilis, Genital herpes Sexually transmitted diseases include gonorrhoea, syphilis and genital herpes, so option 1 i... Reproductive health and STDs 1 answer
Which of the following is put into Anaerobic sludge digester for further sewage treatment ? Answer: 4. Activated sludge Key idea: In secondary treatment, a part of the activated sludge is passed to anaerobic sludge digesters. Bacter... Sewage treatment and energy generation (biogas) 1 answer
Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their : Answer: 3. Defence action Key idea: Secondary metabolites are not needed for basic growth but have ecological roles. Nicotine, strychnine an... Biomolecules: proteins, carbohydrates, lipids, nucleic acids 1 answer
Match the following :(a) Inhibitor of catalytic activity (i) Ricin(b) Possess peptide bonds (ii) Malonate(c) Cell wall material in fungi (iii) Chitin(d) Secondary metabolite (iv) CollagenChoose the correct option from the following : Answer: 1. (a) (ii), (b) (iv), (c) (iii), (d) (i) Key idea: Match each item with its category. Inhibitor of catalytic activity: malonate (co... Enzymes: types, properties, action, classification 1 answer
According to Robert May, the global species diversity is about : Answer: 4. 7 million Key idea: Robert May estimated global species diversity at about 7 million. The IUCN figure of described species is abo... Biodiversity: concept, patterns, importance, loss 1 answer
Which of the following regions of the globe exhibits highest species diversity ? Answer: 4. Amazon forests Key idea: The Amazon rainforest has the highest species diversity on Earth. It holds more than 40,000 plant specie... Biodiversity: concept, patterns, importance, loss 1 answer
The first phase of translation is : Answer: 3. Aminoacylation of tRNA Key idea: Translation begins with charging of tRNA. The first phase is aminoacylation: an amino acid is ac... Transcription, genetic code, translation, protein biosynthesis 1 answer
The oxygenation activity of RuBisCo enzyme in photorespiration leads to the formation of : Answer: 2. 1 molecule of 3-C compound Key idea: In photorespiration RuBisCO acts as an oxygenase on RuBP. RuBP (5C) plus O₂ gives one molecu... C3 and C4 pathways, photorespiration 1 answer
Match the following concerning essential elements and their functions in plants :(a) Iron (i) Photolysis of water(b) Zinc (ii) Pollen germination(c) Boron (iii) Required for chlorophyll biosynthesis(d) Manganese (iv) IAA biosynthesisSelect the correc… Answer: 3. (a) (iii), (b) (iv), (c) (ii), (d) (i) Key idea: Recall the role of each element. Iron: needed for chlorophyll biosynthesis (iii)... Photosynthesis: site and pigments 1 answer
The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is : Answer: 2. Root pressure Key idea: Loss of liquid water from leaf tips at night is guttation, caused by root pressure. At night, with high s... Seed germination, phases and rate of growth, conditions of growth 1 answer
Ray florets have : Answer: 1. Inferior ovary Key idea: In sunflower (family Asteraceae), ray florets are female or sterile and have an inferior ovary. Asterace... Families: Malvaceae, Cruciferae, Leguminosae, Compositae, Gramineae 1 answer
Identify the incorrect statement. Answer: 3. Sapwood is the innermost secondary xylem and is lighter in colour. Key idea: Heartwood is the innermost secondary xylem and is da... Plant tissues and anatomy of root, stem, leaf 1 answer
The transverse section of a plant shows following anatomical features :(a) Large number of scattered vascular bundles surrounded by bundle sheath.(b) Large conspicuous parenchymatous ground tissue.(c) Vascular bundles conjoint and closed.(d) Phloem p… Answer: 1. Monocotyledonous stem Key idea: Scattered, conjoint, closed vascular bundles with bundle sheaths and no phloem parenchyma indicat... Plant tissues and anatomy of root, stem, leaf 1 answer
Identify the wrong statement with reference to immunity. Answer: 3. Active immunity is quick and gives full response. Key idea: Active immunity is slow; passive immunity is quick. In active immunit... Immunology basics and vaccines 1 answer
Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to : Answer: 1. Insect pests Key idea: The Bt toxin (Cry protein) kills certain insects. Bt cotton is resistant to insect pests such as cotton bo... Applications in agriculture: GMOs, Bt crops 1 answer
Which of the following statements is not correct ? Answer: 3. The functional insulin has A and B chains linked together by hydrogen bonds. Key idea: Mature insulin chains A and B are joined b... Applications in health: human insulin, vaccines, gene therapy 1 answer
The specific palindromic sequence which is recognized by EcoRI is : Answer: 1. 5' - GAATTC - 3'3' - CTTAAG - 5' Key idea: EcoRI recognises 5'-GAATTC-3' and cuts between G and A. A palindrome reads the same on... Tools: restriction enzymes, vectors, host 1 answer
Identify the wrong statement with regard to Restriction Enzymes. Answer: 4. Sticky ends can be joined by using DNA ligases. Key idea: Judge each statement against the NCERT chapter on restriction enzymes.... Tools: restriction enzymes, vectors, host 1 answer
Match the organism with its use in biotechnology.(a) Bacillus thuringiensis (i) Cloning vector(b) Thermus aquaticus (ii) Construction of first rDNA molecule(c) Agrobacterium tumefaciens (iii) DNA polymerase(d) Salmonella typhimurium (iv) Cry proteins… Answer: 2. (a) (iv), (b) (iii), (c) (i), (d) (ii) Key idea: Match each organism with its biotechnology use. Bacillus thuringiensis: Cry prot... Tools: restriction enzymes, vectors, host 1 answer

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