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Q.16 Which one of the following is not present in the smooth muscles? 1. Z-disc 2. H-band 3. Thick myofilaments 4. Thin myofilaments Smooth muscles lack the organized sarcomere structure […]

Q.15 What is the theme of G-20 Summit currently held in India? 1. One Earth – One Goal 2. One Earth – One Family – One Future 3. Sustainable Living […]

Q.14 Active transport is required for 1. positively charged molecules 2. neutral molecules 3. negatively charged molecules 4. chloride ions Active transport moves molecules or ions against their concentration gradient […]

Q.13 Ramachandran plots are used to analyse 1. primary structure of proteins 2. secondary structure of proteins 3. tertiary structure of proteins 4. quaternary structure of proteins Ramachandran plots analyze […]

Q.12 In eukaryotes, 5S rRNA is synthesized by 1. RNA polymerase I 2. RNA polymerase II 3. RNA polymerase III 4. RNA polymerase (sigma) subunit Eukaryotes 5S rRNA: Synthesized by […]

Q.11 Given below are two statements: Statement I :Speciation can occur rapidly or slowly. Statement II: Speciation can take place with geographic separation only. In the light of the above […]

Q.10 An interaction where one species is harmed and the other is unaffected is called 1. commensalism 2. facilitation 3. parasitism 4. amensalism Species Interaction: One Harmed, Other Unaffected is […]

Q.9 The mimicry in which a palatable species mimics a toxic species is called 1. character displacement mimicry 2. Batesian mimicry 3. Mullerian mimicry 4. Gregorian mimicry Batesian Mimicry: Palatable […]

Q.8 Evolution of drug-resistant bacteria is an example of 1. genetic drift 2. natural selection 3. bottleneck effect 4. founder effect Drug-Resistant Bacteria Evolution: Natural Selection Example Antibiotic overuse drives […]

Q.7 The method used to analyse larger DNA fragments (> 1 Mbp) is 1. polyacrylamide gel electrophoresis 2. Isoelectric focusing 3. agarose gel electrophoresis 4. pulsed-field gel electrophoresis DNA Fragment […]