Biology Mcqs Basic Biology McqsMessenger RNA(mRNA) It consists of singlestranded of variable length Its size depends on the gene and protein for which it taking a message For example for a protein molecules having 100 amino acids, the mRNA will have a length of 300 nucleotides In every mRNA threenucleotide encode a specific amino acid and such triplets are known as codons of genetic codesmRNA is 3A) 5'AUGUUUAGCGCC3' b) 5'CCGCGAUUUGUA3'
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(c) rRNA – RNA found in ribosomes (d) ATP – The energycarrying compound in the cell Answer A 22 The net electric charge on DNA and histones is_____ (a) both positive (b) both negative (c) negative and positive, respectively (d) zero Answer C 23 If a double stranded DNA has % of cytosine, what will be the percentage of adenine inB) it is a double stranded circular DNA Biochemistry – MCQ 46 – Nucleic acid analysis A nucleic acid was analyzed and found to contain 32% adenine, 18% guanine, 17% cytosine and 33% thymine The nucleic acid must be a) Singlestranded RNA b) Singlestranded DNA c) Double—stranded RNA d) Double stranded DNA Correct answer d) Double stranded DNA
Nucleic Acid Multiple Choice Questions and Answers for competitive exams These short objective type questions with answers are very important for Board exams as well as competitive exams like Biotechnology, Genetics, JIPMER, NEET, AIIMS etc These short solved questions or quizzes are provided by Gkseries Here below we listed Replication MCQ with Answers Pdf Gear up for your Exam Preparation with top and good Multiple Choice Questions on DNA Replication that are also recommended by toppers, making it easier for you to score more in Exam Important Points to Remember about DNA Replication is the process in which a doublestranded DNA molecule isA) Aform b) Bform c) Zform d) Dform View
Tobacco mosaic virus (TMV) is a single stranded RNA virus that infects a wide range of plants, especially tobacco and other members of the family solanacea The infection causes characteristic patterns, such as mosaiclike mottling and discolouration on the leaves (hence the name) TMV was the first virus to be discovered250 TOP MCQs on Cell Introduction – Viruses and Viroids and Answers Cell Biology Multiple Choice Questions on "Cell Introduction – Viruses and Viroids" 1 The following diseases is caused by viruses ____________ D Both Influenza and Measles Clarification Measles and Influenza are diseases caused by the infection of virusesMCQs An enzyme which can convert single stranded RNA into double stranded viral DNA is called?
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A row of matches in the RNA matrix represents a failure of complementary nucleotides that can potentially produce a doublestranded region Answer (d) Explanation The energy of each structure, which is predicted, is estimated by the nearestneighbor rule by summing the negative basestacking energies for each base pair in the doublestrandedAnswer a Explanation The discovery that simply introducing a double stranded RNA into a cell can repress the gene containing sequencings identical to that dsRNA This phenomenon was first reported in 1998 found by the experiment in the worm C elegans 4 Question Dicer is __________ a) DNAselike enzymeThe eukaryotic genetic material is linear and double stranded DNA It is associated with histone proteins to form nucleosome unit 66 DNA is mainly found in (a) nucleolus (b) nucleus only (c) cytoplasm only (d) none of these Answer and Explanation 66 (b) DNA is mainly found in nucleus It is associated with RNA and proteins to form compact
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2 Linnaeus used which kingdom of classification?Biochemistry RNA interference RNA interference (RNAi) is a genetic regulatory system that functions to silence the activity of specific genes RNAi occurs naturally, through the production of nuclearencoded premicroRNA (premiRNA), and can be induced experimentally, using short segments of synthetic doublestranded RNA (dsRNA) Please refer to the MCQ Questions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance with Answers The following Molecular Basis of Inheritance Class 12 Biology MCQ Questions has been designed based on the latest syllabus and examination pattern for Class 12 Our experts have designed MCQ Questions for Class 12 Biology with Answers for all chapters in your
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Nucleic acid structure Pages Difficulty 2 Ans C Doublestranded regions of RNA A) are less stable than doublestranded regions of DNA B) can be observed in the laboratory, but probably have no biological relevance C) can form between two selfcomplementary regions of the same single strand of RNA D) do not occur E) have the twoVirology MCQs STUDY Flashcards Learn Write Spell Test PLAY Match Gravity Created by Clinscioptom Key Concepts Terms in this set (136) What are viruses made of? d) RNA molecules are antiparallel and doublestranded 5) In prokaryotes, RNA polymerase catalyzes the synthesis of a) mRNA b) rRNA c) tRNA d) All of the above 6) The RNA polymerase is a multisubunit enzyme that recognizes a consensus nucleotide sequence (promoter region) upstream of the transcription start site In prokaryotes, the consensus
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Viruses, Viroids and Prions MCQ (Multiple Choice Questions and Answers) A) T2 virus B) T4 virus C) SV – 400 D) TMV Answer D Question 3 Double stranded RNA is found in A) Influenza Virus B) Reovirus C)Polio Virus D) T4 virus Answer B Question 4 Smallest virus is A) Foot and Mouth virus B) Alfalfa Mosaic virus C) Pseudomonas Pf D) TMV Answer A Question 5 Who Answer Answer (d) DNA is the hereditary material found in the nucleus of eukaryotic cells and the cytoplasm of prokaryotic cells that determines the composition of the organism There is another type of genetic material found in cells and viruses known as ribonucleic acid (RNA) DNA is double stranded as well as single stranded biomoleculeMCQs The only virus, which has double stranded RNA, is?
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A) It can have a negativelycharged backbone composed of nitrogenous bases b) Each 3',5'phosphodiester bond will contain one phosphate group MCQ Questions on Biological Classification 1 Which of the following organisms can be found in extreme saline conditions?Multiple Choice Questions (MCQ) topic quiz Nucleic acids Instructions and answers for teachers These instructions cover the learner activity section which can be found on page 10 This Lesson Element supports OCR AS and A Level Biology A (H0/H4) and Biology B (Advancing Biology) (H022/H422) When distributing the activity section to the learners either as a printed copy or as
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This contains 15 Multiple Choice Questions for NEET Test DNA, RNA & Experiments on Genetic Material (mcq) to study with solutions a complete question bank The solved questions answers in this Test DNA, RNA & Experiments on Genetic Material quiz give you a good mix of easy questions and tough questions NEET students definitely take this Test DNA, RNA & Experiments onA Double stranded DNA B Circular double stranded DNA C Linear double stranded DNA D Supercoiled circular double stranded DNA Answer B Explanation Found mostly in prokaryotic cells, plasmids are extra chromosomalauto replicating small circular double stranded DNA which generally carries certain genes for the advantage of bacteria, such as, antibiotic resistance 13In a particular virus either DNA or RNA is genetic material, never both are present in a virus Hence, viruses are (i) Double stranded DNA or ds DNA Hepatitis B (ii) Single stranded DNA or ss DNA coliphage (iii) Double stranded RNA or ds RNA Reo virus, wound Tumor virus (iv) Single stranded RNA or ss RNA Tobacco mosaic virus (TMV)
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Answer c) Alignment of either of the double or singlestranded DNA molecules and the formation of phosphodiester bonds The bond can be between either one or both the strands Description Ligation refers to the formation of bonds amid the ends of two DNA strands The strands can either be single or double Since the nature of the bond is found to be phosphodiester, thus the bondQuestion 3 Suppose a certain gene contains the doublestranded sequence 5' ATGTTTAGCGCC 3' 3' TACAAATCGCGG 5' If the the top strand is the sense strand and codes for a mRNA whose sequence begins 'ATG' Which of the following would be the sequence of the corresponding segment of antisense RNA? DNA found in the nucleus because of this reason it is known as nucleic acid DNA is double stranded molecule and it is present on the chromosome The chromosome number is different for different individual The structure of Deoxyribonucleic acid is discovered by James Watson and Francis Crick Following MCQs will help more to understand DNA (Deoxyribonucleic
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14True about CMV are all except Most common cause of posttransplantation infection Most common cause of transplacental infection A nonenveloped DNA virus Produces intranuclear inclusions Ans (A nonenveloped DNA virus) 15Most common poxvirus infection in human is Smallpox Monkeypox Double stranded RNA is found in (a) Reoviruses (b) TMV (c) T2bacteriophages (d) T4bacteriophages 39 Contagium vivum fluidum was proposed by (a) DJ Ivanowsky (b) MW Beijerinck (c) Stanley (d) Robert Hook 40 In cyanophages, the genetic material is (a) DNA (b) RNA (c) Both (a) and (b) (d) Proteins 41 A naked RNA particle causing the symptoms like that of aDoublestranded DNA molecule (Questions 116) 11_____ Which structural feature is found in the singlestranded DNA molecule?
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CBSE Class 11 Biology Biological Classification MCQs with answers available in Pdf for free download The MCQ Questions for Class 11 Biology with answers have been prepared as per the latest syllabus, NCERT books and examination pattern suggested in Standard 11 by CBSE, NCERT and KVS Multiple Choice Questions are an important part of exams for Grade 11 Biology and ifQuestion While analysing the DNA of an organism a total number of 5386 nucleotides were found out of which the proportion of different bases were Adenine = 29%, Guanine = 17%, Cytosine = 32%, Thymine = 17% Considering the Chargaff's rule it can be concluded that a) It is single stranded DNA;3 Smallest taxon of classification is _______ 4 In which of the following kingdom are Archaea and Nitrogenfixing organisms classified?
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(d) Their RNA is of high molecular weight Viroids, the smallest known pathogens, are naked, circular, singlestranded RNA molecules that do not encode a protein but autonomously replicate when introduced into host plants Viroids only infect plants;Double helix formed by RNA is more stable than DNA a) True b) False View Answer & Solution Answer a Explanation The difference in their thermal stability is not clearly known but doublestranded helical RNA needs higher temperature for denaturation than DNA 3 Question Which form of structure has been adopted by RNA?(a) singlestranded DNA (b) doublestranded DNA (c) DNA (d) RNA Answer and Explanation 15 (b) E coli is a gramnegative, rod shaped, motile or nonmotile bacteria E coli contains a double stranded DNA as its genetic material The DNA is not associated with any histone proteins so it is referred to as naked DNA This DNA is circular with
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The dual role for () RNA strands allows both the synthesis of doublestranded RNA and capsid proteins Most DNA viruses assemble in the nucleus, whereas most RNA viruses develop solely in cytoplasm Some DNA viruses may provide only one or two replicationrelated gene products which function to divert host cell processes to those of viral replication () RNA cannot serve as mRNAMCQs The only virus, which has double stranded RNA, is?26 Which characteristic will this doublestranded DNA molecule share with a doublestranded RNA molecule of the same size?
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